US20110139403A1 - Heat Exchanger - Google Patents
Heat Exchanger Download PDFInfo
- Publication number
- US20110139403A1 US20110139403A1 US11/572,611 US57261105A US2011139403A1 US 20110139403 A1 US20110139403 A1 US 20110139403A1 US 57261105 A US57261105 A US 57261105A US 2011139403 A1 US2011139403 A1 US 2011139403A1
- Authority
- US
- United States
- Prior art keywords
- air
- passages
- heat exchanger
- installation
- room
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
- F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
- F28F9/027—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits in the form of distribution pipes
- F28F9/0273—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits in the form of distribution pipes with multiple holes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F12/00—Use of energy recovery systems in air conditioning, ventilation or screening
- F24F12/001—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air
- F24F12/006—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air using an air-to-air heat exchanger
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/0035—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning using evaporation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D9/0081—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by a single plate-like element ; the conduits for one heat-exchange medium being integrated in one single plate-like element
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/06—Constructions of heat-exchange apparatus characterised by the selection of particular materials of plastics material
- F28F21/065—Constructions of heat-exchange apparatus characterised by the selection of particular materials of plastics material the heat-exchange apparatus employing plate-like or laminated conduits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
- F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
- F28F3/025—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being corrugated, plate-like elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2250/00—Arrangements for modifying the flow of the heat exchange media, e.g. flow guiding means; Particular flow patterns
- F28F2250/10—Particular pattern of flow of the heat exchange media
- F28F2250/108—Particular pattern of flow of the heat exchange media with combined cross flow and parallel flow
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/54—Free-cooling systems
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/56—Heat recovery units
Definitions
- the present invention relates to heat exchangers and more particularly but not exclusively to heat exchangers employed in air conditioning apparatus, the heat exchangers including sensible and enthalpy heat exchangers.
- the above mentioned air conditioning apparatus includes devices that treat the air prior to it entering and/or after it has left the heat exchanger.
- these heat exchangers are typically used for offices and class rooms, it is preferable that they project horizontally as least as possible. This has necessitated the heat exchanger having inlet and outlet chambers that increase the height and/or horizontal width of the air conditioning apparatus. This is a distinct disadvantage as is preferable the apparatus occupy a smaller volume as possible.
- a heat exchanger including:
- the passages of at least one of the sets each have a first length, the first lengths including co-extensive length portions, and a second length with the air passing through the passages changing in direction when passing between the first and second lengths, and said apparatus includes flow restriction means in at least some of the passages of said at least one of the sets.
- the flow restriction means are arranged so that the time required for air to pass through the passages of the at least one set is substantially the same.
- the first lengths extend longitudinally generally normal to the second lengths, with the first lengths being joined to the second lengths by arcuate portions.
- the flow restriction means are located in at least some of the arcuate portion.
- said flow restriction means are located at end portions of said passages.
- said heat exchanger is a sensible heat exchanger with said sheet material inhibiting the transfer of moisture between the sets.
- said sheet material is foil or plastic material film.
- said heat exchanger is an enthalpy heat exchanger with said sheet material provides for the transfer of moisture between the sets.
- said sheet material is paper or cloth.
- said heat exchanger includes a plurality of stacked frames, each frame providing a respective one of the sets, with adjacent frames being separated, and each frame includes a plurality of generally parallel walls separating the passages.
- sheet materials separate the frames.
- each passage has a substantially constant transverse cross-section, with the flow restriction means being a reduction in the cross section.
- a frame being generally planar and including a plurality of generally parallel walls that are transversely spaced to provide a plurality of passages through which air passes to pass through the frame, each passage including a first length that extends to a second length with the first lengths having co-extensive portions, and wherein the first lengths are longitudinally inclined to the second lengths, and at least some of the passages have a flow restriction means.
- each passage has a substantially constant cross-section, with the flow restriction means being a reduction in the cross-section.
- the flow restriction means is a projection that projects into the passages to reduce the transverse cross section thereof.
- the flow restriction means is a web that varies thickness and that extends across said walls.
- said frame is moulded from plastics material.
- said first lengths extend at approximately 90° to said second lengths.
- the parallel walls are joined by longitudinal end walls so that in transverse cross section the parallel walls and end walls are of a sinusoidal configuration.
- the flow restriction means aid in maintaining equal dwell time for air passing through the co-extensive portions.
- an air conditioning apparatus including:
- a hollow body having a longitudinal side extending between opposite first and second sets;
- heat exchanger located in said body between said ends, the heat exchanger including a first set and a second set of passages, with each passage having an inlet opening and an outlet opening, with the inlet openings of each set being adjacent so as to be arranged in a group, each group being located adjacent said side so that the passages extending from the inlet openings thereof toward said first end, and the passages of said second set extending from the inlet openings thereof to said second end;
- first fan being at said first end and drawing air from first set of passages
- said first set of passages are provided to take air from within a room, with the air then being delivered by said first fan to outside the room, and said second set of passages being provided to take air from outside the room, which air is then delivered by said second fan to said room.
- said inlet openings are located in a plane, said plane being generally parallel to said side.
- a filter is located to filter air delivered to said first set of passages.
- said side is provided with a panel displaceable to provide access to said filter.
- said housing has a first inlet extending to a first duct, said first duct extending to the inlet openings of said first passages.
- said housing has an outlet through which air is delivered to said room, said outlet communicating with said first fan.
- said body has a further inlet that delivers air to a further duct, said further duct providing air to said second set passages.
- an installation including:
- an air conditioning apparatus including a heat exchanger having a first set of passages and a second set of passages, the passages being arranged for heat transfer between the two sets, said first set extending from an inlet that receives air from the room to an outlet communicating with said cavity, with said second set extending from an inlet positioned outside said cavity and room to an outlet delivering air to said room, and water delivery means to deliver water to said first set to cool the air passing therethrough to thereby cool air passing through said second set so that cooled air is delivered to said room.
- said water delivery means includes a nozzle assembly to deliver a water mist to said first set.
- said water delivery means includes a pad to which water is delivered and through which air passes to be delivered to said first set so that air leaving said pad is cooled.
- said pad saturates air passing therethrough.
- said heat exchanger is a sensible heat exchanger.
- said air conditioning apparatus includes a heating means is operable to heat the air delivered to said room from the second set.
- said heating means includes tubes through which heated water passes.
- said installation further includes a solar hot water heater that delivers heated water to said heating means.
- said installation includes a first fan to cause air to pass through said first set and a second fan to cause air to pass through said second set.
- the fans are driven by electric motors.
- said installation includes a solar cell assembly that delivers electric current to the fans to drive the fans.
- an air conditioning apparatus including:
- a hollow body having an upper end and a lower end;
- the heat exchanger located in the body between said ends, the heat exchanger including a first set and a second set of passages, the passages being arranged for heat transfer between the two sets, each set extending from an air inlet to an air outlet, with the inlet of said first passages being higher than the outlet of said first passages;
- water collection means to collect any water leaving the first set outlet.
- a pump means to deliver the water from the water collection means to said water delivery means.
- said water delivery means is a spray nozzle assembly.
- said water delivery means includes a pad, with air passing through said pad and then a water droplet stream issuing from said nozzle assembly with the air then delivered to said first set inlet.
- an installation including:
- a building including a room
- said first set inlet receives air from said room and said first set outlet delivers air to outside said room
- said second set inlet receives air from outside said room and said second set outlet delivers air to said room so that air delivered to said room is cooled by air passing through said first set.
- said installation includes a ceiling cavity, and air from said first set outlet is delivered to said cavity.
- FIG. 1 is a schematic side elevation of an air conditioning apparatus employing a heat exchanger
- FIG. 2 is a schematic side elevation of a second air conditioning apparatus employing a heat exchanger:
- FIG. 3 is a schematic side elevation of a third air conditioning apparatus employing a heat exchanger:
- FIG. 4 is a schematic sectioned side elevation of a fourth air conditioning apparatus
- FIG. 5 is a schematic side elevation of a fifth air conditioning apparatus of FIG. 5 ;
- FIG. 6 is an isometric view of portion of the heat exchangers employed in the apparatus of FIGS. 1 to 5 ;
- FIG. 7 is a schematic plan view of a frame employed in the heat exchanger of the apparatus of FIGS. 1 to 5 ;
- FIG. 8 is a schematic side elevation of the frame of FIG. 7 ;
- FIG. 9 is a schematic end elevation of the frame of FIG. 7 ;
- FIG. 10 is a schematic plan view of portion of the frame of FIG. 7 ;
- FIG. 11 is a schematic sectioned side elevation of a sixth air conditioning apparatus
- FIG. 12 is a schematic side elevation of a modification of the air conditioning apparatus of FIG. 11 ;
- FIG. 13 is a schematic top plan view of the air conditioning apparatus of FIGS. 11 and 12 ;
- FIG. 14 is a schematic sectioned side elevation of a modification of the air conditioning apparatus of FIG. 11 ;
- FIG. 15 is a schematic sectioned side elevation of a modification of the air conditioning apparatus of FIG. 11 ;
- FIG. 16 is a schematic sectioned side elevation of a modification of the air conditioning apparatus of FIG. 11 ;
- FIG. 17 is a schematic plan view of a frame employed in the heat exchanger of the apparatus of FIGS. 1 to 5 or FIGS. 11 to 16 ;
- FIG. 18 is a schematic end elevation of the frame of FIG. 17 ;
- FIG. 19 is a schematic sectioned illustration of a house employing the air conditioning apparatus of FIG. 1 ;
- FIG. 20 is a schematic sectioned side elevation of an installation including a building and an air conditioning apparatus therefore;
- FIG. 21 is a schematic sectioned side elevation of the air conditioning apparatus of FIG. 20 .
- FIG. 1 there is schematically depicted an air conditioning apparatus 10 .
- the apparatus 10 is installed adjacent a room wall 11 separating the exterior 12 from the interior of a room 13 .
- the apparatus 10 includes a hollow housing 14 within which there is located a heat exchanger 15 .
- the heat exchanger 15 may be a sensible heat exchanger or an enthalpy heat exchanger.
- the heat exchanger 15 includes a plurality of first passages 16 that receive air from the exterior 12 and deliver the air to a fan 17 .
- the fan 17 creates the pressure difference to draw air from the exterior 12 and deliver the air to a heater 18 .
- the heater 18 is a gas heater. Air passing through the heater 18 is then delivered to an air duct 19 located between the ground 20 and the floor 21 of the room 13 .
- the duct 19 would extend to air outlets communicating with the room 13 .
- the heat exchanger 15 has second passages 22 that are located adjacent the passages 16 so that heat can be transferred therebetween.
- the passages 22 extend from an air inlet 29 taking air from the room 13 , and deliver air to a fan 23 that exhausts the air to the exterior 12 .
- the fan 23 creates the pressure difference to draw air into the passages 22 .
- the passages 16 receive air from filters 24 .
- spray nozzles 25 that deliver water in droplet form to the interior of the passages 22 to thereby aid in cooling air passing through the passages 16 .
- Water is delivered to the nozzles 25 by a pump 26 drawing water from a reservoir 27 .
- the reservoir 27 would receive excess water exiting the lower end of the passages 22 , with the reservoir being topped up by water delivered from a mains supply.
- an evaporative cooling pad 28 As an alternative to or in addition to the nozzles 25 there is provided an evaporative cooling pad 28 .
- the pad 28 would receive water from the pump 26 .
- air passing through the passages 22 is cooled by water via the nozzles 25 and/or pad 28 . Accordingly this cool air passing through the passages 22 cools the air passing through passages 16 , which is delivered to the room 13 . If so required, the air temperature can be raised by means of selective operation of the heater 18 .
- the heat exchanger 15 could be a sensible heat exchanger. Accordingly, water is not transferred to the passages 16 from the passages 22 .
- air entering the inlet 29 would be approximately 24° C. and 16.4° C. wet bulb in temperature. Air exiting the fan 23 would be approximately 17° C. Air entering the passages 16 would be approximately 40° C. and 21.6° C. wet bulb. Air passing through the passages 22 would become saturated and have a temperature of approximately 17° C. Water would be at approximately 17° C. and air delivered to the duct 19 would be 17° C. and 13.9° C. wet bulb. Air flows would be in the vicinity of 800 to 2000 litres per second, but could be higher to suit other units.
- the air conditioning apparatus of FIG. 2 is a modification of the apparatus 10 .
- the apparatus 50 of FIG. 2 is associated with a wall 51 separating a room 52 from the exterior 53 .
- the apparatus 50 includes a housing 54 that contains a heat exchanger 55 .
- the heat exchanger 55 would be a sensible heat exchanger however the apparatus 50 could also be adapted so that the heat exchanger 55 is an enthalpy heat exchanger in which case the nozzles 55 would be omitted together with pad 28 .
- the heat exchanger 55 has first passages 56 that take air from the exterior 53 and deliver it to a fan 57 .
- the fan 57 provides a pressure differential to draw air through the passages 56 .
- the air from the fan 57 is delivered to a heating or cooling coil 58 through which a refrigerant is passed and is either expanded or allowed to condense to heat or cool the air passing therethrough.
- Air leaving the coil 58 is delivered to a duct 59 .
- the duct 59 would deliver air to the interior of the room 52 .
- the heat exchanger 55 includes second passages 60 that take air from an inlet 61 in the room 52 . Air leaving the passages 60 is delivered to a coil 68 .
- the coil 68 could be a condenser coil that is cooled by air passing therethrough. Typically the coil 68 would be operatively associated with the coil 58 together with an expansion valve and compressor 64 . Air leaving the coil 68 is taken by the fan 62 and delivered to the exterior 53 .
- the fan 62 provides the pressure differential to take air from the room 52 and deliver to the exterior 53 .
- the passages 56 and 60 are located adjacent each other so as to provide for heat transfer therebetween.
- the heat exchanger 55 is a sensible heat exchanger and therefore there is no moisture transfer between the passages 55 and 60 .
- spray nozzles 63 that deliver water in droplet form to the upper end of the passages 60 so that the water flows down the passages 60 to aid in cooling the air passing therethrough and therefore cooling the air passing through the passages 56 .
- Water for the nozzles 63 is provided by a pump 65 taking water from a reservoir 66 .
- Water in the reservoir 66 is provided by water passing through the lower end of the passages 60 as well as water from a mains supply.
- the nozzle 63 could be located adjacent the inlet 61 .
- the passages 56 would receive air from a filter 67 .
- FIG. 3 there is schematically depicted a further air conditioning apparatus 70 .
- the apparatus 70 includes a housing 71 containing a heat exchanger 72 .
- the heat exchanger 72 provides passages 73 to take air from a room 74 and delivers the air to a fan 75 .
- the fan 75 provides the pressure differential to draw air through the passages 73 and is deliver it under pressure to a condenser coil 76 .
- the heat exchanger 72 provides further passages 77 that are in contact with the passages 73 to provide for the transfer of heat therebetween.
- the heat exchanger 72 would be an enthalpy heat exchanger and therefore there is moisture transfer between the passages 73 and 77 .
- the passages 77 take air from the interior 74 and deliver it to a fan 79 .
- the fan 79 provides the pressure gradient to draw air in through the passages 77 and deliver the air under pressure to an evaporative coil 80 . Air passes through the evaporative coil 80 to be delivered to the interior of the room 74 .
- a compressor 81 is operatively associated with the coils 76 and 80 so as to pass a refrigerant therethrough.
- the fan 75 can also take air from the exterior 78 via an inlet 82 .
- air leaving the room 74 via the passages 73 is cooled and cools air passing through the passages 77 .
- This air is further cooled by the evaporative coil 80 if so required.
- Air leaving the passages 73 and delivered to the coil 76 by the fan 75 aids in heating the refrigerant passing through the condenser coil 76 .
- FIG. 4 shows a further embodiment of the present invention. More particularly, FIG. 4 shows an air conditioning apparatus 80 having a housing 81 within which there is located a heat exchanger 83 .
- the heat exchanger 83 provides passages 84 that take air from the exterior 85 and deliver it to a fan 86 .
- the fan 86 provides the pressure gradient to draw air in through the passages 84 and deliver the air to a heater, such as a gas heater 87 . Air leaving the gas heater 87 is delivered to a duct 88 extending to a room 89 .
- the heat exchanger 83 has further passages 90 that take air from the room 89 through an evaporative cooling pad 91 .
- Air from the passages 90 is delivered to a fan 92 that provides the pressure gradient to draw air through the passages 90 and deliver the air to an outlet 93 to the exterior 85 .
- the outlet 93 could deliver air to the roof space of a building to aid in cool the room balance.
- a nozzle 94 delivers water droplets to the extremities of the passages 90 so that the water droplets enter the passages 90 to thereby cool the air passing through the passages 90 .
- the heat exchanger 83 is a sensible heat exchanger.
- air being delivered to the room 89 is at least partly heated by the air passing through the passages 90 and if so required is further heated by the heater 87 .
- Moisture is added to the air via the nozzle 94 , with no moisture transfer taking place from the passages 90 to the passages 84 .
- FIG. 5 a further embodiment is illustrated.
- This embodiment is an air conditioning apparatus 100 including a housing 101 .
- the housing 101 contains a heat exchanger 102 .
- the heat exchanger 102 provides passages 103 that take air from the exterior 104 and deliver the air to a fan 105 .
- the fan 105 provides the pressure gradient to draw air through the passages 103 and deliver the air to a heater, such as a gas heater. 106 .
- the gas heater 106 having a flue 107 . Air leaving the heater 106 is delivered to a room 108 .
- the heat exchanger 102 has further passages 109 that take air from the room 108 through a cooling evaporative pad 110 .
- the pad 110 receives water from a pump 111 taking water from a reservoir 112 .
- the reservoir 112 would receive water from a mains supply.
- Air is drawn through the passages 109 by a fan 113 that delivers the air to the exterior 104 .
- nozzles 114 Located at the extremity of the passages 109 are nozzles 114 that deliver water in droplet form to the passages 109 .
- the heat exchanger 102 is a sensible heat exchanger and therefore there is no moisture transfer from the passages 109 to the passages 103 . Any water finding its way through the passages 109 is delivered to the reservoir 112 .
- each of the heat exchangers 15 , 55 , 72 , 83 and 102 are of a similar construction, however the sheet material employed therein will determine whether they are an enthalpy heat exchanger or a sensible heat exchanger.
- each of these heat exchangers has its passages of a configuration 20 that air passing therethrough changes direction.
- each of the passages 16 provides a first length 120 that is generally normal to a second length 121 .
- they have a first length 122 and a second length 123 generally normal to the first length 122 .
- the lengths 121 and 122 have co-extensive portions.
- the heat exchanger 55 is of a substantially similar construction.
- Each of the above described heat exchangers consists of a stack of frames 120 is ( FIG. 7 ).
- Each frame 120 is moulded from plastics material and includes a plurality of parallel walls 124 ( FIG. 6 ) that form a “sinusoidal” arrangement so that the walls 124 are joined by end walls 129 . Accordingly a plurality of pockets 130 are provided, which pockets 130 provide the longitudinally extending previously mentioned passages 16 , 22 , 56 , 60 , 73 , 77 , 84 , 90 , 103 and 109 .
- the frame 120 has the walls 124 arranged so as to provide first lengths 125 that extend to second lengths 126 via arcuate portions 127 .
- the walls 124 are held in a generally spaced parallel relationship by cross braces 128 .
- the frames 120 are stacked. Located between the frames 120 is sheet material such as foil or paper as discussed previously depending on whether the heat exchanger is a sensible or enthalpy heat exchanger.
- the frames 120 are of two configurations, that is frames 131 and 132 .
- the frames 132 have recesses 133 that are engaged by projections 134 .
- the sheet material 135 is located therebetween and secured in position by being pinned in the recesses 133 by the projections 134 .
- the pockets 130 have an open length that is closed by the sheet material 135 .
- the material 135 would prevent moisture transfer, while if an enthalpy heat exchanger, moisture transfer can take place. If an enthalpy heat exchanger the material 135 would be paper or cloth.
- the lengths 125 and 126 vary in length.
- the first length 125 adjacent the side frame member 136 is longer than the first length 125 adjacent the frame member 137 . In respect of the lengths 126 , they increase in length toward the side frame member 138 .
- flow restriction devices 139 To ensure equal dwell time in respect of air passing through the passages provided with the lengths 125 and 126 there are provided flow restriction devices 139 . Accordingly, air takes the same time to pass through the frame 120 irrespective of which passage the air is traveling through. Accordingly the flow restrictors 139 vary in the degree they restrict air flow, for example there are no flow restrictors in respect of the passages adjacent the side frame member 136 while adjacent the side frame member 137 there is maximum restriction to slow the air flow.
- the frame 120 is generally planar and is formed of plastics material with the flow restriction devices 139 being projections that project into the passages to reduce the transverse cross section thereof.
- the passages are of substantially constant transverse cross section throughout their length.
- the first lengths 125 have co-extensive portions 140 .
- each heat exchanger is provided by a stack of frames 120 .
- Each of the frames 120 provides for the flow or air in a particularly direction only.
- Adjacent frames 120 have air flowing in opposite directions so that heat and optionally moisture is transferred between the passages of adjacent frames. The heat and moisture transfer taking place through the sheet material 135 .
- each frame 120 provides a set of passages that are essentially located in a single plane. Accordingly in respect of each set the air travels in the same direction.
- each passage is provided with an opening.
- the inlet openings are generally planar as are the outlet openings.
- the passages 16 have openings at the inlet 130 , which openings are generally coplanar.
- the openings at the outlet 31 are also generally coplanar. The same can be said for the inlet and outlet openings for the passages 22 .
- FIG. 11 there is schematically depicted an air conditioning apparatus 178 .
- the apparatus 178 is intended to be located adjacent a ceiling 141 of a room 142 having an external wall 143 .
- the apparatus 178 includes a horizontally elongated hollow housing 144 containing a heat exchanger 145 .
- the heat exchanger 145 may be a sensible heat exchanger or an enthalpy heat exchanger.
- the heat exchanger 145 includes a plurality of first passages 146 that receive air from the exterior 147 and deliver air to a fan 148 .
- the fan 148 creates the pressure difference to draw air from the exterior 147 and cause it to flow through the heat exchanger 145 , and past a coil 149 that may be part of a reverse cycle air conditioning system.
- the coil 149 may also heat or cool air passing therethrough with the use of hot or cold water.
- the heat exchanger 145 has second passages 150 that are located adjacent the passages 146 so that heat can be transferred therebetween.
- the passages 150 extend from an air inlet 151 taking air from the room 142 , and deliver air to a fan 152 that exhausts the air to the exterior 147 .
- the fan 152 creates the pressure difference to draw air from the room 142 and deliver the air to the exterior 147 .
- the passages 150 have inlets along the horizontal length 153 of the heat exchanger 145 , while the passages 146 have inlet openings along the length 154 . In both instances the inlet openings of the lengths 153 and 154 are downwardly facing and arranged in a generally horizontal plane.
- the inlet 151 is a grid that provides for the delivery of air to the inlet openings of the length 153 .
- the inlet openings of the passages 146 receive air from a duct 155 extending to an inlet 156 again provided by a grid.
- the inlet 156 communicates with the exterior 147 .
- air leaving the passages 146 may be supplemented by air entering via passage 157 communicating with the interior 142 .
- the divider 158 and blade 179 separate the duct 159 from the duct 155 .
- the air conditioning apparatus 178 is located adjacent the ceiling 141 and is generally horizontally elongated. In operation of the apparatus 178 , air delivered to the room 142 from the fan 148 can be heated or cooled by the coil 149 .
- a filter 160 is provided to filter air entering the passages 146 and 150 .
- the filter 160 would cover the lengths 153 and 154 . As seen in FIG. 11 , in this embodiment the filter 160 angles downwardly below the length 153 .
- the filter 160 has a blade 179 that abuts the divider 158 .
- the air conditioning apparatus 140 is located above the ceiling 141 so as to be located in a roof cavity. Accordingly the fan 152 would deliver air to a duct 161 extending to the exterior 147 .
- a duct 162 would extend from the exterior 147 to the inlet 156 .
- a duct 163 would extend to the room 142 .
- the housing 144 would have a removable panel 161 providing access to the filter 160 .
- FIG. 14 is particular a modification of the embodiment of FIG. 11 .
- the coil 149 has been removed.
- FIG. 15 is essentially a modification of the embodiment of FIG. 14 however the coil 149 has been removed.
- the embodiment of FIG. 16 is a still further modification of the embodiment of FIG. 12 .
- the fan 148 exhausts downwardly to the interior of the room 142 .
- the inlet grid 151 is removable enabling removal of the filter.
- FIGS. 17 and 18 there is schematically illustrated a modification of the frame of FIG. 7 .
- the frame 120 does not have the restriction devices 139 .
- the embodiment of FIGS. 17 and 18 has an end web 164 that varies in thickness so as to taper from the frame member 137 to the frame member 136 .
- the web 164 provides a varying resistance to the air passing through the previously mentioned passages 16 , 22 , 56 , 60 , 73 , 77 , 84 , 90 , 103 and 109 . That is the inlet apertures vary in size to ensure equal dwell time in respect of air passing through the total length, the lengths 125 and 126 . Accordingly air takes the same time to pass through the frame 120 irrespective of which passage the air is traveling through.
- FIG. 19 there is schematically depicted a house 170 .
- the house 170 has walls 171 , a floor 172 , a ceiling 173 and a roof 174 . Located between the roof 174 and ceiling 173 is a roof cavity 175 .
- the house 170 includes the air conditioning apparatus of FIG. 1 or 2 . However the apparatus 10 , 50 exhausts air through a duct 176 extending to the roof cavity 175 so that air is delivered thereto to cool or heat the roof cavity 175 .
- the duct 19 delivers air to outlets 177 so that conditioned air is delivered to the interior of the house 170 .
- FIGS. 20 and 21 there is schematically depicted an installation 200 .
- the installation 200 includes a building 201 , the building 201 having a room 202 beneath a ceiling cavity 203 .
- the ceiling cavity 203 is located between a ceiling 204 and a roof 205 .
- Mounted on the roof 205 is a solar cell assembly 206 that produces an electric current, and a solar water heater assembly 207 that provides heated water.
- the room 204 has a wall 208 upon which there is mounted an air conditioning apparatus 209 .
- the apparatus 209 includes a hollow body 210 within which there is located a heat exchanger 211 .
- the heat exchanger 211 is similar to the heat exchangers previously provided in that it includes a first set of passages 212 and a second set of passages 213 , with the passages 212 and 213 being arranged for heat transfer therebetween.
- the first set 212 has an inlet 214 from which the passages 212 extend downwardly to an outlet 215 .
- the second set 213 has an inlet 216 from which the passages 213 extend upwardly to an outlet 217 .
- Adjacent the outlet 217 is a heater 218 .
- the heater 218 is a plurality of tubes that receive heated water from the solar hot water heater 207 .
- Adjacent the inlet 214 is a water delivery means 219 that includes a pad 220 to which water is delivered. Adjacent the pad 220 is a nozzle assembly 221 that delivers a stream of water droplets 222 to an area adjacent the inlet 214 so that air passing from the room 202 to the inlet 214 becomes saturated with water. Accordingly air passing through the first set 212 cools air passing through the set 213 .
- the cooled air leaving the outlet 217 is delivered to the room 202 via a fan 223 .
- a fan 224 draws air through the passages 212 to deliver the cooled air to the ceiling cavity 203 .
- a water collection means 225 that includes a tray 226 from which water is taken via a pump 227 .
- the pump 227 delivers the water to the pad 220 and nozzle assembly 221 . Accordingly the water collected in the tray 226 is cooled.
- the inlet 216 receives air from an inlet duct 228 that takes air from the outside environment, that is, the space 229 outside the room 202 .
- the fans 223 and 224 as well as the pump 227 receive electric current from the solar cell assembly (photo voltaic cell assembly) 206 .
- air being delivered to the room 202 by the fan 223 can be cooled by the heat exchanger 212 or heated by the heater 218 .
- Cool air delivered to the ceiling cavity 203 is allowed to pass through the cavity 203 by the use of vents 229 .
Abstract
A heat exchanger (15) comprising a plurality of generally parallel passages through which air is to pass in a first direction through a first set of passages (16) and in an opposite direction to said first direction through a second set of said passages (22), the passages of said first set (16) being located adjacent the passages of said second set (22). The heat exchanger (15) further comprising sheet material that separates the first set (16) from the second set (22), and provides for the transfer of heat between said first set (16) and said second set of passages (22).
Description
- The present invention relates to heat exchangers and more particularly but not exclusively to heat exchangers employed in air conditioning apparatus, the heat exchangers including sensible and enthalpy heat exchangers.
- Described in Australian Patent Application Nos. 200140356, 2003204948 and 2004903172 as well as International Application PCT/AU2004/000103 are various heat exchangers and air conditioning apparatus. In respect of these heat exchangers, it can be noted they are enthalpy and sensible, heat exchangers with parallel co-extensive passages. The passages are linear and are divided by sheet material that provides for the transfer of heat between air moving through adjacent passages.
- The above mentioned air conditioning apparatus includes devices that treat the air prior to it entering and/or after it has left the heat exchanger. As these heat exchangers are typically used for offices and class rooms, it is preferable that they project horizontally as least as possible. This has necessitated the heat exchanger having inlet and outlet chambers that increase the height and/or horizontal width of the air conditioning apparatus. This is a distinct disadvantage as is preferable the apparatus occupy a smaller volume as possible.
- To ensure air passing through the passages has the same dwell time the passage are co-extensive and linear.
- It is the object of the present invention to overcome or substantially ameliorate the above disadvantage.
- There is disclosed herein a heat exchanger including:
- a plurality of generally parallel passages through which air is to pass in a first direction through a first set of said passages and in an opposite direction to said first direction through a second set of said passages, the passages of said first set being located adjacent the passages of said second set;
- sheet material separating the first set from the second set, and providing for the transfer of heat between said first set and said second set of passages; and wherein
- the passages of at least one of the sets each have a first length, the first lengths including co-extensive length portions, and a second length with the air passing through the passages changing in direction when passing between the first and second lengths, and said apparatus includes flow restriction means in at least some of the passages of said at least one of the sets.
- Preferably, the flow restriction means are arranged so that the time required for air to pass through the passages of the at least one set is substantially the same.
- Preferably, the first lengths extend longitudinally generally normal to the second lengths, with the first lengths being joined to the second lengths by arcuate portions.
- Preferably, the flow restriction means are located in at least some of the arcuate portion.
- In an alternative preferred form said flow restriction means are located at end portions of said passages.
- Preferably, said heat exchanger is a sensible heat exchanger with said sheet material inhibiting the transfer of moisture between the sets.
- Preferably, said sheet material is foil or plastic material film.
- Preferably, said heat exchanger is an enthalpy heat exchanger with said sheet material provides for the transfer of moisture between the sets.
- Preferably, said sheet material is paper or cloth.
- Preferably, said heat exchanger includes a plurality of stacked frames, each frame providing a respective one of the sets, with adjacent frames being separated, and each frame includes a plurality of generally parallel walls separating the passages.
- Preferably, sheet materials separate the frames.
- Preferably, each passage has a substantially constant transverse cross-section, with the flow restriction means being a reduction in the cross section.
- There is further disclosed herein a frame being generally planar and including a plurality of generally parallel walls that are transversely spaced to provide a plurality of passages through which air passes to pass through the frame, each passage including a first length that extends to a second length with the first lengths having co-extensive portions, and wherein the first lengths are longitudinally inclined to the second lengths, and at least some of the passages have a flow restriction means.
- Preferably, each passage has a substantially constant cross-section, with the flow restriction means being a reduction in the cross-section.
- Preferably, the flow restriction means is a projection that projects into the passages to reduce the transverse cross section thereof.
- In another preferred form, the flow restriction means is a web that varies thickness and that extends across said walls.
- Preferably, said frame is moulded from plastics material.
- Preferably, said first lengths extend at approximately 90° to said second lengths.
- Preferably, the parallel walls are joined by longitudinal end walls so that in transverse cross section the parallel walls and end walls are of a sinusoidal configuration.
- Preferably, the flow restriction means aid in maintaining equal dwell time for air passing through the co-extensive portions.
- There is further disclosed herein an air conditioning apparatus including:
- a hollow body having a longitudinal side extending between opposite first and second sets;
- a heat exchanger located in said body between said ends, the heat exchanger including a first set and a second set of passages, with each passage having an inlet opening and an outlet opening, with the inlet openings of each set being adjacent so as to be arranged in a group, each group being located adjacent said side so that the passages extending from the inlet openings thereof toward said first end, and the passages of said second set extending from the inlet openings thereof to said second end;
- a first fan, said first fan being at said first end and drawing air from first set of passages;
- a second fan, said second fan being located at said second end and drawing air from said second set of passages; and wherein
- said first set of passages are provided to take air from within a room, with the air then being delivered by said first fan to outside the room, and said second set of passages being provided to take air from outside the room, which air is then delivered by said second fan to said room.
- Preferably, said inlet openings are located in a plane, said plane being generally parallel to said side.
- Preferably, a filter is located to filter air delivered to said first set of passages.
- Preferably, said side is provided with a panel displaceable to provide access to said filter.
- Preferably, said housing has a first inlet extending to a first duct, said first duct extending to the inlet openings of said first passages.
- Preferably, said housing has an outlet through which air is delivered to said room, said outlet communicating with said first fan.
- Preferably, said body has a further inlet that delivers air to a further duct, said further duct providing air to said second set passages.
- There is further disclosed herein an installation including:
- a building having a room and an enclosed roof cavity; and
- an air conditioning apparatus including a heat exchanger having a first set of passages and a second set of passages, the passages being arranged for heat transfer between the two sets, said first set extending from an inlet that receives air from the room to an outlet communicating with said cavity, with said second set extending from an inlet positioned outside said cavity and room to an outlet delivering air to said room, and water delivery means to deliver water to said first set to cool the air passing therethrough to thereby cool air passing through said second set so that cooled air is delivered to said room.
- Preferably, said water delivery means includes a nozzle assembly to deliver a water mist to said first set.
- Preferably, said water delivery means includes a pad to which water is delivered and through which air passes to be delivered to said first set so that air leaving said pad is cooled.
- Preferably, said pad saturates air passing therethrough.
- Preferably, said heat exchanger is a sensible heat exchanger.
- Preferably, said air conditioning apparatus includes a heating means is operable to heat the air delivered to said room from the second set.
- Preferably, said heating means includes tubes through which heated water passes.
- Preferably, said installation further includes a solar hot water heater that delivers heated water to said heating means.
- Preferably, said installation includes a first fan to cause air to pass through said first set and a second fan to cause air to pass through said second set.
- Preferably, the fans are driven by electric motors.
- Preferably, said installation includes a solar cell assembly that delivers electric current to the fans to drive the fans.
- There is further disclosed herein an air conditioning apparatus including:
- a hollow body having an upper end and a lower end;
- a heat exchanger located in the body between said ends, the heat exchanger including a first set and a second set of passages, the passages being arranged for heat transfer between the two sets, each set extending from an air inlet to an air outlet, with the inlet of said first passages being higher than the outlet of said first passages;
- means to deliver water to the inlet of said first set to cool air passing from the first set inlet to the first set outlet; and
- water collection means to collect any water leaving the first set outlet.
- Preferably, a pump means to deliver the water from the water collection means to said water delivery means.
- Preferably, said water delivery means is a spray nozzle assembly.
- Preferably, said water delivery means includes a pad, with air passing through said pad and then a water droplet stream issuing from said nozzle assembly with the air then delivered to said first set inlet.
- There is further disclosed herein an installation including:
- a building including a room;
- the above air conditioning apparatus, and wherein;
- said first set inlet receives air from said room and said first set outlet delivers air to outside said room, and said second set inlet receives air from outside said room and said second set outlet delivers air to said room so that air delivered to said room is cooled by air passing through said first set.
- Preferably, said installation includes a ceiling cavity, and air from said first set outlet is delivered to said cavity.
- Preferred embodiments of the present invention will now be described by way of example with reference to the accompanying drawings wherein:
-
FIG. 1 is a schematic side elevation of an air conditioning apparatus employing a heat exchanger; -
FIG. 2 is a schematic side elevation of a second air conditioning apparatus employing a heat exchanger: -
FIG. 3 is a schematic side elevation of a third air conditioning apparatus employing a heat exchanger: -
FIG. 4 is a schematic sectioned side elevation of a fourth air conditioning apparatus; -
FIG. 5 is a schematic side elevation of a fifth air conditioning apparatus ofFIG. 5 ; -
FIG. 6 is an isometric view of portion of the heat exchangers employed in the apparatus ofFIGS. 1 to 5 ; -
FIG. 7 is a schematic plan view of a frame employed in the heat exchanger of the apparatus ofFIGS. 1 to 5 ; -
FIG. 8 is a schematic side elevation of the frame ofFIG. 7 ; -
FIG. 9 is a schematic end elevation of the frame ofFIG. 7 ; -
FIG. 10 is a schematic plan view of portion of the frame ofFIG. 7 ; -
FIG. 11 is a schematic sectioned side elevation of a sixth air conditioning apparatus; -
FIG. 12 is a schematic side elevation of a modification of the air conditioning apparatus ofFIG. 11 ; -
FIG. 13 is a schematic top plan view of the air conditioning apparatus ofFIGS. 11 and 12 ; -
FIG. 14 is a schematic sectioned side elevation of a modification of the air conditioning apparatus ofFIG. 11 ; -
FIG. 15 is a schematic sectioned side elevation of a modification of the air conditioning apparatus ofFIG. 11 ; -
FIG. 16 is a schematic sectioned side elevation of a modification of the air conditioning apparatus ofFIG. 11 ; -
FIG. 17 is a schematic plan view of a frame employed in the heat exchanger of the apparatus ofFIGS. 1 to 5 orFIGS. 11 to 16 ; -
FIG. 18 is a schematic end elevation of the frame ofFIG. 17 ; -
FIG. 19 is a schematic sectioned illustration of a house employing the air conditioning apparatus ofFIG. 1 ; -
FIG. 20 is a schematic sectioned side elevation of an installation including a building and an air conditioning apparatus therefore; and -
FIG. 21 is a schematic sectioned side elevation of the air conditioning apparatus ofFIG. 20 . - In
FIG. 1 there is schematically depicted anair conditioning apparatus 10. Theapparatus 10 is installed adjacent aroom wall 11 separating the exterior 12 from the interior of aroom 13. Theapparatus 10 includes ahollow housing 14 within which there is located aheat exchanger 15. Theheat exchanger 15 may be a sensible heat exchanger or an enthalpy heat exchanger. Theheat exchanger 15 includes a plurality offirst passages 16 that receive air from the exterior 12 and deliver the air to afan 17. Thefan 17 creates the pressure difference to draw air from the exterior 12 and deliver the air to aheater 18. Typically theheater 18 is a gas heater. Air passing through theheater 18 is then delivered to anair duct 19 located between theground 20 and thefloor 21 of theroom 13. Theduct 19 would extend to air outlets communicating with theroom 13. - The
heat exchanger 15 hassecond passages 22 that are located adjacent thepassages 16 so that heat can be transferred therebetween. Thepassages 22 extend from anair inlet 29 taking air from theroom 13, and deliver air to afan 23 that exhausts the air to theexterior 12. Thefan 23 creates the pressure difference to draw air into thepassages 22. Thepassages 16 receive air from filters 24. - Located above the
heat exchanger 15, and more particularly above the upper extremities of thepassages 22 arespray nozzles 25 that deliver water in droplet form to the interior of thepassages 22 to thereby aid in cooling air passing through thepassages 16. Water is delivered to thenozzles 25 by apump 26 drawing water from areservoir 27. Thereservoir 27 would receive excess water exiting the lower end of thepassages 22, with the reservoir being topped up by water delivered from a mains supply. As an alternative to or in addition to thenozzles 25 there is provided anevaporative cooling pad 28. Thepad 28 would receive water from thepump 26. - In operation of the above described
apparatus 10, air passing through thepassages 22 is cooled by water via thenozzles 25 and/orpad 28. Accordingly this cool air passing through thepassages 22 cools the air passing throughpassages 16, which is delivered to theroom 13. If so required, the air temperature can be raised by means of selective operation of theheater 18. - As a particular example, the
heat exchanger 15 could be a sensible heat exchanger. Accordingly, water is not transferred to thepassages 16 from thepassages 22. As one specific example air entering theinlet 29 would be approximately 24° C. and 16.4° C. wet bulb in temperature. Air exiting thefan 23 would be approximately 17° C. Air entering thepassages 16 would be approximately 40° C. and 21.6° C. wet bulb. Air passing through thepassages 22 would become saturated and have a temperature of approximately 17° C. Water would be at approximately 17° C. and air delivered to theduct 19 would be 17° C. and 13.9° C. wet bulb. Air flows would be in the vicinity of 800 to 2000 litres per second, but could be higher to suit other units. - The air conditioning apparatus of
FIG. 2 is a modification of theapparatus 10. Theapparatus 50 ofFIG. 2 is associated with awall 51 separating aroom 52 from theexterior 53. Theapparatus 50 includes ahousing 54 that contains aheat exchanger 55. Theheat exchanger 55 would be a sensible heat exchanger however theapparatus 50 could also be adapted so that theheat exchanger 55 is an enthalpy heat exchanger in which case thenozzles 55 would be omitted together withpad 28. - The
heat exchanger 55 hasfirst passages 56 that take air from the exterior 53 and deliver it to afan 57. Thefan 57 provides a pressure differential to draw air through thepassages 56. The air from thefan 57 is delivered to a heating orcooling coil 58 through which a refrigerant is passed and is either expanded or allowed to condense to heat or cool the air passing therethrough. Air leaving thecoil 58 is delivered to aduct 59. Theduct 59 would deliver air to the interior of theroom 52. - The
heat exchanger 55 includessecond passages 60 that take air from aninlet 61 in theroom 52. Air leaving thepassages 60 is delivered to acoil 68. Thecoil 68 could be a condenser coil that is cooled by air passing therethrough. Typically thecoil 68 would be operatively associated with thecoil 58 together with an expansion valve andcompressor 64. Air leaving thecoil 68 is taken by thefan 62 and delivered to theexterior 53. Thefan 62 provides the pressure differential to take air from theroom 52 and deliver to theexterior 53. Thepassages heat exchanger 55 is a sensible heat exchanger and therefore there is no moisture transfer between thepassages - Located above the
passages 60 arespray nozzles 63 that deliver water in droplet form to the upper end of thepassages 60 so that the water flows down thepassages 60 to aid in cooling the air passing therethrough and therefore cooling the air passing through thepassages 56. Water for thenozzles 63 is provided by apump 65 taking water from areservoir 66. Water in thereservoir 66 is provided by water passing through the lower end of thepassages 60 as well as water from a mains supply. In an alternative arrangement thenozzle 63 could be located adjacent theinlet 61. - Typically, the
passages 56 would receive air from afilter 67. - If the above described
heat exchanger 55 is an enthalpy heat exchanger then there would be water transfer between thepassages - In
FIG. 3 there is schematically depicted a furtherair conditioning apparatus 70. Theapparatus 70 includes ahousing 71 containing aheat exchanger 72. Theheat exchanger 72 providespassages 73 to take air from aroom 74 and delivers the air to afan 75. Thefan 75 provides the pressure differential to draw air through thepassages 73 and is deliver it under pressure to acondenser coil 76. Theheat exchanger 72 providesfurther passages 77 that are in contact with thepassages 73 to provide for the transfer of heat therebetween. In this example, theheat exchanger 72 would be an enthalpy heat exchanger and therefore there is moisture transfer between thepassages passages 77 take air from the interior 74 and deliver it to afan 79. - The
fan 79 provides the pressure gradient to draw air in through thepassages 77 and deliver the air under pressure to anevaporative coil 80. Air passes through theevaporative coil 80 to be delivered to the interior of theroom 74. Acompressor 81 is operatively associated with thecoils - If so required, the
fan 75 can also take air from the exterior 78 via aninlet 82. - In the above described preferred embodiment, air leaving the
room 74 via thepassages 73 is cooled and cools air passing through thepassages 77. This air is further cooled by theevaporative coil 80 if so required. Air leaving thepassages 73 and delivered to thecoil 76 by thefan 75 aids in heating the refrigerant passing through thecondenser coil 76. -
FIG. 4 shows a further embodiment of the present invention. More particularly,FIG. 4 shows anair conditioning apparatus 80 having ahousing 81 within which there is located aheat exchanger 83. Theheat exchanger 83 providespassages 84 that take air from the exterior 85 and deliver it to afan 86. Thefan 86 provides the pressure gradient to draw air in through thepassages 84 and deliver the air to a heater, such as agas heater 87. Air leaving thegas heater 87 is delivered to aduct 88 extending to aroom 89. Theheat exchanger 83 hasfurther passages 90 that take air from theroom 89 through anevaporative cooling pad 91. Air from thepassages 90 is delivered to afan 92 that provides the pressure gradient to draw air through thepassages 90 and deliver the air to anoutlet 93 to theexterior 85. Theoutlet 93 could deliver air to the roof space of a building to aid in cool the room balance. - A
nozzle 94 delivers water droplets to the extremities of thepassages 90 so that the water droplets enter thepassages 90 to thereby cool the air passing through thepassages 90. Theheat exchanger 83 is a sensible heat exchanger. - In operation of the above described
apparatus 80, air being delivered to theroom 89 is at least partly heated by the air passing through thepassages 90 and if so required is further heated by theheater 87. Moisture is added to the air via thenozzle 94, with no moisture transfer taking place from thepassages 90 to thepassages 84. - In
FIG. 5 a further embodiment is illustrated. This embodiment is anair conditioning apparatus 100 including ahousing 101. Thehousing 101 contains aheat exchanger 102. Theheat exchanger 102 providespassages 103 that take air from theexterior 104 and deliver the air to afan 105. Thefan 105 provides the pressure gradient to draw air through thepassages 103 and deliver the air to a heater, such as a gas heater. 106. Thegas heater 106 having aflue 107. Air leaving theheater 106 is delivered to aroom 108. - The
heat exchanger 102 hasfurther passages 109 that take air from theroom 108 through a coolingevaporative pad 110. Thepad 110 receives water from apump 111 taking water from areservoir 112. Thereservoir 112 would receive water from a mains supply. - Air is drawn through the
passages 109 by afan 113 that delivers the air to theexterior 104. Located at the extremity of thepassages 109 arenozzles 114 that deliver water in droplet form to thepassages 109. - Preferably, the
heat exchanger 102 is a sensible heat exchanger and therefore there is no moisture transfer from thepassages 109 to thepassages 103. Any water finding its way through thepassages 109 is delivered to thereservoir 112. - Each of the
heat exchangers configuration 20 that air passing therethrough changes direction. For example in the embodiment ofFIG. 1 , each of thepassages 16 provides afirst length 120 that is generally normal to asecond length 121. In respect of thepassages 22, they have afirst length 122 and asecond length 123 generally normal to thefirst length 122. Thelengths heat exchanger 55 is of a substantially similar construction. - In the embodiment of
FIG. 3 , again air passing through thepassages 73 changes direction as does air passing through thepassages 77. However, thepassages - In the embodiment of
FIG. 4 , still again air passing through thepassages passages FIG. 5 . - Each of the above described heat exchangers consists of a stack of
frames 120 is (FIG. 7 ). Eachframe 120 is moulded from plastics material and includes a plurality of parallel walls 124 (FIG. 6 ) that form a “sinusoidal” arrangement so that thewalls 124 are joined byend walls 129. Accordingly a plurality ofpockets 130 are provided, which pockets 130 provide the longitudinally extending previously mentionedpassages frame 120 has thewalls 124 arranged so as to providefirst lengths 125 that extend tosecond lengths 126 viaarcuate portions 127. - The
walls 124 are held in a generally spaced parallel relationship by cross braces 128. - As mentioned previously, the
frames 120 are stacked. Located between theframes 120 is sheet material such as foil or paper as discussed previously depending on whether the heat exchanger is a sensible or enthalpy heat exchanger. - The
frames 120 are of two configurations, that is frames 131 and 132. Theframes 132 haverecesses 133 that are engaged byprojections 134. Thesheet material 135 is located therebetween and secured in position by being pinned in therecesses 133 by theprojections 134. In this respect it should be noted that thepockets 130 have an open length that is closed by thesheet material 135. For a sensible heat exchanger thematerial 135 would prevent moisture transfer, while if an enthalpy heat exchanger, moisture transfer can take place. If an enthalpy heat exchanger thematerial 135 would be paper or cloth. - As the
first lengths 125 are inclined to thesecond lengths 126, thelengths first length 125 adjacent theside frame member 136 is longer than thefirst length 125 adjacent theframe member 137. In respect of thelengths 126, they increase in length toward theside frame member 138. To ensure equal dwell time in respect of air passing through the passages provided with thelengths flow restriction devices 139. Accordingly, air takes the same time to pass through theframe 120 irrespective of which passage the air is traveling through. Accordingly theflow restrictors 139 vary in the degree they restrict air flow, for example there are no flow restrictors in respect of the passages adjacent theside frame member 136 while adjacent theside frame member 137 there is maximum restriction to slow the air flow. - The
frame 120 is generally planar and is formed of plastics material with theflow restriction devices 139 being projections that project into the passages to reduce the transverse cross section thereof. In this respect the passages are of substantially constant transverse cross section throughout their length. - The
first lengths 125 haveco-extensive portions 140. - In respect of each of the above described heat exchangers, each heat exchanger is provided by a stack of
frames 120. Each of theframes 120 provides for the flow or air in a particularly direction only.Adjacent frames 120 have air flowing in opposite directions so that heat and optionally moisture is transferred between the passages of adjacent frames. The heat and moisture transfer taking place through thesheet material 135. Accordingly eachframe 120 provides a set of passages that are essentially located in a single plane. Accordingly in respect of each set the air travels in the same direction. - Each end of each passage is provided with an opening. In respect of the passages providing for the flow of air in a particular direction, the inlet openings are generally planar as are the outlet openings. For example, in respect of the embodiment of
FIG. 1 thepassages 16 have openings at theinlet 130, which openings are generally coplanar. Again in respect of thepassages 16, the openings at theoutlet 31 are also generally coplanar. The same can be said for the inlet and outlet openings for thepassages 22. - In
FIG. 11 there is schematically depicted anair conditioning apparatus 178. Theapparatus 178 is intended to be located adjacent aceiling 141 of aroom 142 having anexternal wall 143. Theapparatus 178 includes a horizontally elongatedhollow housing 144 containing aheat exchanger 145. Theheat exchanger 145 may be a sensible heat exchanger or an enthalpy heat exchanger. Theheat exchanger 145 includes a plurality offirst passages 146 that receive air from theexterior 147 and deliver air to afan 148. Thefan 148 creates the pressure difference to draw air from theexterior 147 and cause it to flow through theheat exchanger 145, and past acoil 149 that may be part of a reverse cycle air conditioning system. Thecoil 149 may also heat or cool air passing therethrough with the use of hot or cold water. - The
heat exchanger 145 hassecond passages 150 that are located adjacent thepassages 146 so that heat can be transferred therebetween. Thepassages 150 extend from anair inlet 151 taking air from theroom 142, and deliver air to afan 152 that exhausts the air to theexterior 147. Thefan 152 creates the pressure difference to draw air from theroom 142 and deliver the air to theexterior 147. - The
passages 150 have inlets along thehorizontal length 153 of theheat exchanger 145, while thepassages 146 have inlet openings along thelength 154. In both instances the inlet openings of thelengths - The
inlet 151 is a grid that provides for the delivery of air to the inlet openings of thelength 153. - The inlet openings of the
passages 146 receive air from aduct 155 extending to aninlet 156 again provided by a grid. Theinlet 156 communicates with theexterior 147. - If so required, air leaving the
passages 146 may be supplemented by air entering viapassage 157 communicating with the interior 142. - The
divider 158 andblade 179 separate theduct 159 from theduct 155. - In the above described embodiment of
FIG. 11 , theair conditioning apparatus 178 is located adjacent theceiling 141 and is generally horizontally elongated. In operation of theapparatus 178, air delivered to theroom 142 from thefan 148 can be heated or cooled by thecoil 149. - Preferably, a
filter 160 is provided to filter air entering thepassages filter 160 would cover thelengths FIG. 11 , in this embodiment thefilter 160 angles downwardly below thelength 153. - The
filter 160 has ablade 179 that abuts thedivider 158. - In the embodiment of
FIG. 12 , theair conditioning apparatus 140 is located above theceiling 141 so as to be located in a roof cavity. Accordingly thefan 152 would deliver air to aduct 161 extending to theexterior 147. Aduct 162 would extend from the exterior 147 to theinlet 156. Aduct 163 would extend to theroom 142. - In the apparatus of
FIGS. 11 to 13 , preferably thehousing 144 would have aremovable panel 161 providing access to thefilter 160. - The embodiment of
FIG. 14 is particular a modification of the embodiment ofFIG. 11 . In the embodiment ofFIG. 14 thecoil 149 has been removed. - The embodiment of
FIG. 15 is essentially a modification of the embodiment ofFIG. 14 however thecoil 149 has been removed. The embodiment ofFIG. 16 is a still further modification of the embodiment ofFIG. 12 . In this embodiment thefan 148 exhausts downwardly to the interior of theroom 142. - In the embodiments of
FIGS. 11 to 16 theinlet grid 151 is removable enabling removal of the filter. - In
FIGS. 17 and 18 there is schematically illustrated a modification of the frame ofFIG. 7 . In this embodiment theframe 120 does not have therestriction devices 139. Instead the embodiment ofFIGS. 17 and 18 has anend web 164 that varies in thickness so as to taper from theframe member 137 to theframe member 136. Accordingly theweb 164 provides a varying resistance to the air passing through the previously mentionedpassages lengths frame 120 irrespective of which passage the air is traveling through. - In
FIG. 19 there is schematically depicted ahouse 170. Thehouse 170 haswalls 171, afloor 172, aceiling 173 and aroof 174. Located between theroof 174 andceiling 173 is aroof cavity 175. Thehouse 170 includes the air conditioning apparatus ofFIG. 1 or 2. However theapparatus duct 176 extending to theroof cavity 175 so that air is delivered thereto to cool or heat theroof cavity 175. - The
duct 19 delivers air tooutlets 177 so that conditioned air is delivered to the interior of thehouse 170. - In
FIGS. 20 and 21 there is schematically depicted aninstallation 200. Theinstallation 200 includes abuilding 201, thebuilding 201 having aroom 202 beneath aceiling cavity 203. Theceiling cavity 203 is located between aceiling 204 and aroof 205. Mounted on theroof 205 is asolar cell assembly 206 that produces an electric current, and a solarwater heater assembly 207 that provides heated water. - The
room 204 has awall 208 upon which there is mounted anair conditioning apparatus 209. - The
apparatus 209 includes ahollow body 210 within which there is located aheat exchanger 211. Theheat exchanger 211 is similar to the heat exchangers previously provided in that it includes a first set ofpassages 212 and a second set ofpassages 213, with thepassages - The
first set 212 has aninlet 214 from which thepassages 212 extend downwardly to anoutlet 215. Thesecond set 213 has aninlet 216 from which thepassages 213 extend upwardly to anoutlet 217. Adjacent theoutlet 217 is aheater 218. In this embodiment theheater 218 is a plurality of tubes that receive heated water from the solarhot water heater 207. - Adjacent the
inlet 214 is a water delivery means 219 that includes apad 220 to which water is delivered. Adjacent thepad 220 is anozzle assembly 221 that delivers a stream ofwater droplets 222 to an area adjacent theinlet 214 so that air passing from theroom 202 to theinlet 214 becomes saturated with water. Accordingly air passing through thefirst set 212 cools air passing through theset 213. - The cooled air leaving the
outlet 217 is delivered to theroom 202 via afan 223. - A
fan 224 draws air through thepassages 212 to deliver the cooled air to theceiling cavity 203. - Located below the
outlet 212 is a water collection means 225 that includes atray 226 from which water is taken via apump 227. Thepump 227 delivers the water to thepad 220 andnozzle assembly 221. Accordingly the water collected in thetray 226 is cooled. Theinlet 216 receives air from aninlet duct 228 that takes air from the outside environment, that is, thespace 229 outside theroom 202. - The
fans pump 227 receive electric current from the solar cell assembly (photo voltaic cell assembly) 206. - As can be appreciated from the above, air being delivered to the
room 202 by thefan 223 can be cooled by theheat exchanger 212 or heated by theheater 218. - Cool air delivered to the
ceiling cavity 203 is allowed to pass through thecavity 203 by the use ofvents 229.
Claims (73)
1. A heat exchanger including:
a plurality of generally parallel passages through which air is to pass in a first direction through a first set of said passages and in an opposite direction to said first direction through a second set of said passages, the passages of said first set being located adjacent the passages of said second set;
sheet material separating the first set from the second set, and providing for the transfer of heat between said first set and said second set of passages; and
wherein the passages of at least one of the sets each have a first length, the first lengths including co-extensive length portions, and a second length with the air passing through the passages changing in direction when passing between the first and second lengths, and said apparatus includes flow restriction means in at least some of the passages of said at least one of the sets.
2. The heat exchanger of claim 1 , wherein the flow restriction means are arranged so that the time required for air to pass through the passages of the at least one set is substantially the same.
3. The heat exchanger of claim 1 , wherein the first lengths extend longitudinally generally normal to the second lengths, with the first lengths being joined to the second lengths by arcuate portions.
4. The heat exchanger of claim 1 wherein the flow restriction means are located in at least some of the arcuate portion.
5. The heat exchanger of claim 1 , wherein said flow restriction means are located at end portions of said passages.
6. The heat exchanger of claim 1 , wherein said heat exchanger is a sensible heat exchanger with said sheet material inhibiting the transfer of moisture between the sets.
7. The heat exchanger of claim 6 , wherein said sheet material is foil or plastic material film.
8. The heat exchanger of claim 1 , wherein said heat exchanger is an enthalpy heat exchanger with said sheet material provides for the transfer of moisture between the sets.
9. The heat exchanger of claim 8 , wherein said sheet material is paper or cloth.
10. The heat exchanger of claim 1 , wherein said heat exchanger includes a plurality of stacked frames, each frame providing a respective one of the sets, with adjacent frames being separated, and each frame includes a plurality of generally parallel walls separating the passages.
11. The heat exchanger of claim 10 , wherein sheet materials separate the frames.
12. The heat exchanger of claim 1 , wherein each passage has a substantially constant transverse cross-section, with the flow restriction means being a reduction in the cross section.
13. A frame for a heat exchanger, the frame being generally planar and including a plurality of generally parallel walls that are transversely spaced to provide a plurality of passages through which air passes to pass through the frame, each passage including a first length that extends to a second length with the first lengths having coextensive portions, and wherein the first lengths are longitudinally inclined to the second lengths, and at least some of the passages have a flow restriction means.
14. The frame of claim 13 , wherein each passage has a substantially constant cross-section, with the flow restriction means being a reduction in the cross-section.
15. The frame of claim 13 , wherein the flow restriction means is a projection that projects into the passages to reduce the transverse cross section thereof.
16. The frame of claim 13 , wherein the flow restriction means is a web that varies thickness and that extends across said walls.
17. The frame of claim 13 , wherein said frame is moulded from plastics material.
18. The frame claim 13 , wherein said first lengths extend at approximately 90° to said second lengths.
19. The frame of claim 13 , wherein the parallel walls are joined by longitudinal end walls so that in transverse cross section the parallel walls and end walls are of a sinusoidal configuration.
20. The frame of claim 13 , wherein the flow restriction means aid in maintaining equal dwell time for air passing through the co-extensive portions.
21. An air conditioning apparatus including:
a hollow body having a longitudinal side extending between opposite first and second ends;
a heat exchanger located in said body between said ends, the heat exchanger including a first set and a second set of passages, with each passage having an inlet opening and an outlet opening, with the inlet openings of each set being adjacent so as to be arranged in a group, each group being located adjacent said side so that the passages extending from the inlet openings thereof toward said first end, and the passages of said second set extending from the inlet openings thereof to said second end;
a first fan, said first fan being at said first end and drawing air from first set of passages;
a second fan, said second fan being located at said second end and drawing air from said second set of passages; and
wherein said first set of passages is provided to take air from within a room, with the air then being delivered by said first fan to outside the room, and said second set of passages is being provided to take air from outside the room, which air is then delivered by said second fan to said room.
22. The apparatus of claim 21 , wherein said inlet openings are located in a plane, said plane being generally parallel to said side.
23. The apparatus of claim 21 , wherein a filter is located to filter air delivered to said first set of passages.
24. The apparatus of claim 23 , wherein said side is provided with a panel displaceable to provide access to said filter.
25. The apparatus of claim 21 , wherein said housing has a first inlet extending to a first duct, said first duct extending to the inlet openings of said first passages.
26. The apparatus of claim 21 , wherein said housing has an outlet through which air is delivered to said room, said outlet communicating with said first fan.
27. The apparatus of claim 21 , wherein said body has a further inlet that delivers air to a further duct, said further duct providing air to said second set passages.
28. An installation including:
a building having a room and an enclosed roof cavity; and
an air conditioning apparatus including a heat exchanger having a first set of passages and a second set of passages, the passages being arranged for heat transfer between the two sets, said first set extending from an inlet that receives air from the room to an outlet communicating with said cavity, with said second set extending from an inlet positioned outside said cavity and room to an outlet delivering air to said room, and water delivery means to deliver water to said first set to cool the air passing therethrough to thereby cool air passing through said second set so that cooled air is delivered to said room.
29. The installation of claim 28 , wherein said water delivery means includes a nozzle assembly to deliver a water mist to said first set.
30. The installation of claim 29 , wherein said water delivery means includes a pad to which water is delivered and through which air passes to be delivered to said first set so that air leaving said pad is cooled.
31. The installation of claim 29 , wherein said pad saturates air passing therethrough.
32. The installation of claim 28 , wherein said heat exchanger is a sensible heat exchanger.
33. The assembly of claim 28 , wherein said air conditioning apparatus includes a heating means is operable to heat the air delivered to said room from the second set.
34. The installation of claim 33 , wherein said heating means includes tubes through which heated water passes.
35. The installation of claim 34 , wherein said installation further includes a solar hot water heater that delivers heated water to said heating means.
36. The installation of claim 28 , wherein said installation includes a first fan to cause air to pass through said first set and a second fan to cause air to pass through said second set.
37. The installation of claim 36 , wherein the fans are driven by electric motors.
38. The installation of claim 37 , wherein said installation includes a solar cell assembly that delivers electric current to the fans to drive the fans.
39. An air conditioning apparatus including:
a hollow body having an upper end and a lower end;
a heat exchanger located in the body between said ends, the heat exchanger including a first set and a second set of passages, the passages being arranged for heat transfer between the two sets, each set extending from an air inlet to an air outlet, with the inlet of said first passages being higher than the outlet of said first passages;
means to deliver water to the inlet of said first set to cool air passing from the first set inlet to the first set outlet; and
water collection means to collect any water leaving the first set outlet.
40. The apparatus of claim 39 , further including a pump means to deliver the water from the water collection means to said water delivery means.
41. The apparatus of claim 39 , wherein said water delivery means is a spray nozzle assembly.
42. The apparatus of claim 40 , wherein said water delivery means includes a pad, with air passing through said pad and then a water droplet stream issuing from said nozzle assembly with the air then delivered to said first set inlet.
43. An installation including:
a building including a room;
the air conditioning apparatus of claim 39 , and
wherein said first set inlet receives air from said room and said first set outlet delivers air to outside said room, and said second set inlet receives air from outside said room and said second set outlet delivers air to said room so that air delivered to said room is cooled by air passing through said first set.
44. The installation of claim 43 , wherein said installation includes a ceiling cavity, and air from said first set outlet is delivered to said cavity.
45. The heat exchanger of claim 2 , wherein the first lengths extend longitudinally generally normal to the second lengths, with the first lengths being joined to the second lengths by arcuate portions.
46. The heat exchanger of claim 45 , wherein the flow restriction means are located in at least some of the arcuate portion.
47. The heat exchanger of claim 46 , wherein said flow restriction means are located at end portions of said passages.
48. The heat exchanger of claim 47 , wherein said heat exchanger is a sensible heat exchanger with said sheet material inhibiting the transfer of moisture between the sets.
49. The heat exchanger of claim 48 , wherein said sheet material is foil or plastic material film.
50. The heat exchanger of claim 47 , wherein said heat exchanger is an enthalpy heat exchanger with said sheet material provides for the transfer of moisture between the sets.
51. The heat exchanger of claim 50 , wherein said sheet material is paper or cloth.
52. The heat exchanger of claim 51 , wherein said heat exchanger includes a plurality of stacked frames, each frame providing a respective one of the sets, with adjacent frames being separated, and each frame includes a plurality of generally parallel walls separating the passages.
53. The heat exchanger of claim 52 , wherein sheet materials separate the frames.
54. The heat exchanger of claim 53 , wherein each passage has a substantially constant transverse cross-section, with the flow restriction means being a reduction in the cross section.
55. The frame of claim 14 , wherein the flow restriction means is a projection that projects into the passages to reduce the transverse cross section thereof.
56. The frame of claim 14 , wherein the flow restriction means is a web that varies thickness and that extends across said walls.
57. The frame of claim 56 , wherein said frame is moulded from plastics material.
58. The frame of claim 57 , wherein said first lengths extend at approximately 90° to said second lengths.
59. The frame of claim 58 , wherein the parallel walls are joined by longitudinal end walls so that in transverse cross section the parallel walls and end walls are of a sinusoidal configuration.
60. The frame of claim 59 , wherein the flow restriction means aid in maintaining equal dwell time for air passing through the co-extensive portions.
61. The apparatus of claim 22 , wherein a filter is located to filter air delivered to said first set of passages.
62. The apparatus of claim 61 , wherein said side is provided with a panel displaceable to provide access to said filter.
63. The apparatus claim 62 , wherein said housing has a first inlet extending to a first duct, said first duct extending to the inlet openings of said first passages.
64. The apparatus of claim 63 , wherein said housing has an outlet through which air is delivered to said room, said outlet communicating with said first fan.
65. The apparatus of claim 64 , wherein said body has a further inlet that delivers air to a further duct, said further duct providing air to said second set passages.
66. The apparatus of claim 40 , wherein said water delivery means is a spray nozzle assembly.
67. The installation of claim 66 , wherein said heat exchanger is a sensible heat exchanger.
68. The assembly of claim 67 , wherein said air conditioning apparatus includes a heating means is operable to heat the air delivered to said room from the second set.
69. The installation of claim 68 , wherein said heating means includes tubes through which heated water passes.
70. The installation of claim 69 , wherein said installation further includes a solar hot water heater that delivers heated water to said heating means.
71. The installation of claim 70 , wherein said installation includes a first fan to cause air to pass through said first set and a second fan to cause air to pass through said second set.
72. The installation of claim 71 , wherein the fans are driven by electric motors.
73. The installation of claim 72 , wherein said installation includes a solar cell assembly that delivers electric current to the fans to drive the fans.
Applications Claiming Priority (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2004904194 | 2004-07-27 | ||
AU2004904194A AU2004904194A0 (en) | 2004-07-27 | A Heat Exchanger | |
AU2004905481A AU2004905481A0 (en) | 2004-09-22 | A heat exchanger | |
AU2004905482A AU2004905482A0 (en) | 2004-09-22 | An air conditioning apparatus | |
AU2004905481 | 2004-09-22 | ||
AU2004905482 | 2004-09-22 | ||
PCT/AU2005/001097 WO2006010205A1 (en) | 2004-07-27 | 2005-07-27 | A heat exchanger |
Publications (1)
Publication Number | Publication Date |
---|---|
US20110139403A1 true US20110139403A1 (en) | 2011-06-16 |
Family
ID=35785833
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/572,611 Abandoned US20110139403A1 (en) | 2004-07-27 | 2005-07-27 | Heat Exchanger |
Country Status (5)
Country | Link |
---|---|
US (1) | US20110139403A1 (en) |
EP (1) | EP1774228A4 (en) |
CN (1) | CN101014809B (en) |
CA (1) | CA2573663A1 (en) |
WO (1) | WO2006010205A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20140224450A1 (en) * | 2013-02-11 | 2014-08-14 | Abb Oy | Solar power plant |
US9835342B2 (en) | 2016-03-22 | 2017-12-05 | King Fahd University Of Petroleum And Minerals | Evaporative condenser cooling system |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2463004A (en) * | 2008-08-26 | 2010-03-03 | Daniel Carl Lane | Heat exchanger in a heat recovery ventilation system |
CH708685A2 (en) * | 2013-10-14 | 2015-04-15 | Weidmann Plastics Tech Ag | Motor vehicle with an air conditioner. |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3625022A (en) * | 1969-12-23 | 1971-12-07 | John W Johnson | Air conditioning unit |
US4129177A (en) * | 1977-06-06 | 1978-12-12 | Adcock Thomas P | Solar heating and cooling system |
US4823867A (en) * | 1981-09-11 | 1989-04-25 | Pollard Raymond J | Fluid flow apparatus |
US5452710A (en) * | 1994-03-28 | 1995-09-26 | Solar Attic, Inc. | Self-sufficient apparatus and method for conveying solar heat energy from an attic |
US20020134087A1 (en) * | 2000-03-14 | 2002-09-26 | Urch John Francis | Heat exchanger |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3513907A (en) * | 1968-04-17 | 1970-05-26 | United Aircraft Prod | Plural mode heat exchange apparatus |
GB1498621A (en) * | 1975-06-16 | 1978-01-25 | Page R | Heat exchanger |
NZ233192A (en) * | 1989-04-19 | 1992-05-26 | John Francis Urch | Counterflow heat exchanger with a serpentine flow path |
WO1993018360A1 (en) * | 1992-03-12 | 1993-09-16 | John Francis Urch | Moulded baffle heat exchanger |
CN2180929Y (en) * | 1993-09-28 | 1994-10-26 | 齐文峰 | Indoor and outdoor two-direction air exchanger |
DE19737158A1 (en) * | 1997-08-26 | 1999-03-04 | Feustle Gerhard Dipl Ing Fh | Highly efficient heat exchanger for use in sensor or time-controlled shock ventilation with heat recovery |
US6434963B1 (en) * | 1999-10-26 | 2002-08-20 | John Francis Urch | Air cooling/heating apparatus |
HK1037473A2 (en) * | 2001-09-20 | 2002-03-15 | Kui Wong Yeung | An air-ventilator with high efficiency thermal exchanger and air filter |
AU2003900835A0 (en) * | 2003-02-25 | 2003-03-13 | Air-Change Pty Limited | An air conditioning apparatus |
-
2005
- 2005-07-27 EP EP05762386A patent/EP1774228A4/en not_active Withdrawn
- 2005-07-27 WO PCT/AU2005/001097 patent/WO2006010205A1/en active Application Filing
- 2005-07-27 CA CA002573663A patent/CA2573663A1/en not_active Abandoned
- 2005-07-27 US US11/572,611 patent/US20110139403A1/en not_active Abandoned
- 2005-07-27 CN CN2005800289129A patent/CN101014809B/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3625022A (en) * | 1969-12-23 | 1971-12-07 | John W Johnson | Air conditioning unit |
US4129177A (en) * | 1977-06-06 | 1978-12-12 | Adcock Thomas P | Solar heating and cooling system |
US4823867A (en) * | 1981-09-11 | 1989-04-25 | Pollard Raymond J | Fluid flow apparatus |
US5452710A (en) * | 1994-03-28 | 1995-09-26 | Solar Attic, Inc. | Self-sufficient apparatus and method for conveying solar heat energy from an attic |
US20020134087A1 (en) * | 2000-03-14 | 2002-09-26 | Urch John Francis | Heat exchanger |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20140224450A1 (en) * | 2013-02-11 | 2014-08-14 | Abb Oy | Solar power plant |
US9899896B2 (en) * | 2013-02-11 | 2018-02-20 | Abb Oy | Solar power plant |
US9835342B2 (en) | 2016-03-22 | 2017-12-05 | King Fahd University Of Petroleum And Minerals | Evaporative condenser cooling system |
Also Published As
Publication number | Publication date |
---|---|
EP1774228A1 (en) | 2007-04-18 |
EP1774228A4 (en) | 2009-12-23 |
CN101014809B (en) | 2010-06-23 |
WO2006010205A1 (en) | 2006-02-02 |
CN101014809A (en) | 2007-08-08 |
CA2573663A1 (en) | 2006-02-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
AU2001294882B2 (en) | Method and plate apparatus for dew point evaporative cooler | |
US20090126913A1 (en) | Vertical counterflow evaporative cooler | |
CN104737361B (en) | Battery temperature adjustment unit and carry the vehicle of the unit | |
US6705096B2 (en) | Method and plate apparatus for dew point evaporative cooler using a trough wetting system | |
US20130340449A1 (en) | Indirect evaporative cooler using membrane-contained liquid desiccant for dehumidification and flocked surfaces to provide coolant flow | |
EP2920539B1 (en) | A ventilation assembly | |
JP5925004B2 (en) | Air conditioning ventilation system | |
US20030209017A1 (en) | Method and plate apparatus for dew point evaporative cooler | |
US6845629B1 (en) | Vertical counterflow evaporative cooler | |
US20100287953A1 (en) | Air Conditioning Apparatus | |
WO2012099465A1 (en) | Cooling system for cooling air in a room and data centre comprising such cooling system | |
AU2002346722B2 (en) | Method and plate apparatus for dew point evaporative cooler | |
US20100224347A1 (en) | Heat Exchanger | |
US20110139403A1 (en) | Heat Exchanger | |
KR101186152B1 (en) | A thermo-hygrostat using cooling/dehumidifying energy recovery technology | |
TWI770482B (en) | dehumidifier | |
KR20100056915A (en) | Regenerative evaporative cooler, cooling system and core module thereof | |
AU2005266840B2 (en) | A heat exchanger | |
KR101368551B1 (en) | Floor-standing air conditioner for one span | |
KR101037871B1 (en) | Air handling unit using cooling/dehumidifying energy recovery technology | |
US9395094B2 (en) | Apparatus for dehumidification of an air flow | |
JP5314118B2 (en) | One-span floor-mounted air conditioner | |
JPH08332331A (en) | Local air conditioner for heating, ventilation, and cooling | |
CN109416190A (en) | Heat exchanger for the positive energy exchange between two strands of air-flows | |
RU2067730C1 (en) | Air conditioner |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: AIR CHANGE PTY LIMITED, AUSTRALIA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:URCH, JOHN FRANCIS, MR.;REEL/FRAME:019253/0652 Effective date: 20070315 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |