US20080216498A1 - Evaporatively cooled heat exchanger - Google Patents
Evaporatively cooled heat exchanger Download PDFInfo
- Publication number
- US20080216498A1 US20080216498A1 US11/716,344 US71634407A US2008216498A1 US 20080216498 A1 US20080216498 A1 US 20080216498A1 US 71634407 A US71634407 A US 71634407A US 2008216498 A1 US2008216498 A1 US 2008216498A1
- Authority
- US
- United States
- Prior art keywords
- tubes
- water
- heat exchanger
- exchanger assembly
- set forth
- 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
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Classifications
-
- 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
- F28D5/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, using the cooling effect of natural or forced evaporation
- F28D5/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, using the cooling effect of natural or forced evaporation in which the evaporating medium flows in a continuous film or trickles freely over the 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
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/02—Tubular elements of cross-section which is non-circular
- F28F1/022—Tubular elements of cross-section which is non-circular with multiple channels
-
- 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
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D2001/0253—Particular components
- F28D2001/026—Cores
- F28D2001/0266—Particular core assemblies, e.g. having different orientations or having different geometric features
-
- 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
Abstract
An heat exchanger assembly includes a plurality of tubes defining a plurality of parallel refrigerant passages therein carrying a refrigerant longitudinally from an inlet header to an outlet header. Water flows from a reservoir through a distributor apparatus to provide even wetting between the ends of the tubes as the water flows laterally over the tubes between an entry edge and an exit edge. A screen is provided adjacent the exit edge to collect excess water to be deposited into a water tray provided beneath and spaced from the exit edge of the tubes. A pump is provided to move water from the water tray to the reservoir to preserve water. If excess water is lost, such as through evaporation, a supplemental water feed line provides supplemental water to the system.
Description
- 1. Field of the Invention
- The subject invention relates to a heat exchanger assembly.
- 2. Description of the Prior Art
- Conventional vapor compression air conditioning systems include an evaporator for transferring heat from ambient air to evaporate a refrigerant, a compressor for compressing the refrigerant into a superheated vapor, and a condenser to condense the refrigerant back to a subcooled liquid so that it can be provided back to the evaporator through an expansion device. Known condenser assemblies include a plurality of tubes extending longitudinally between an inlet end and an outlet end for carrying a refrigerant flowing between an inlet header and an outlet header. Most condenser assemblies are cooled by ambient air flowing on the outside of the tubes. Since the heat removal capacity of air is low, attempts have been made to improve the heat removal efficiency of the condenser by using liquid water as the cooling medium in conjunction with air. This improves the heat transfer rate considerably due to latent heat of evaporation of liquid water.
- One such heat exchanger is disclosed in WO 00/68628 to Phelps et al., which shows a hose connected to a water outlet that drips water over condenser fins. A controller is responsive to a sensed air temperature to shut off the water flow below a certain air temperature. The system is optimized by visually inspecting the condenser to see if there is excess or insufficient water near the bottom of the unit. However, there is no mechanism to ensure that the water uniformly wets the condenser surface.
- A similar heat exchanger is shown in U.S. Pat. No. 4,672,817 to Croce, which shows a condenser having a perforated copper tube to allow water to saturate a wicking material until it drips vertically down over an array of fins. A common disadvantage of the condensers of Croce and Phelps is that the water flows over the fins.
- The invention provides for such a heat exchanger including a distributor apparatus for distributing water between the ends of the tubes to flow laterally across the tubes from the entry edge to the exit edge.
- Other advantages of the present invention will be readily appreciated, as the same becomes better understood by reference to the following detailed description when considered in connection with the accompanying drawings wherein:
-
FIG. 1 is a schematic view of a heat exchanger in accordance with a first embodiment of the present invention; -
FIG. 2 is a schematic view of a heat exchanger in accordance with a second embodiment of the present invention; -
FIG. 3 is a perspective view of a heat exchanger in accordance with either embodiment of the present invention; -
FIG. 4 is a cross sectional view of a heat exchanger according to an aspect of the present invention; -
FIG. 5 is a cross sectional view of a heat exchanger according to a second aspect of the present invention; -
FIG. 6 is a perspective view of a heat exchanger tube according to a third aspect of the present invention; -
FIG. 7 is a perspective view of a heat exchanger tube according to a fourth aspect of the present invention; -
FIG. 8 is a perspective view of a heat exchanger tube according to a fifth aspect of the present invention; -
FIG. 9 is a flow chart showing the control logic for an electronic control according to the first exemplary embodiment of the present invention; and -
FIG. 10 is a flow chart showing the control logic for an electronic control according to the second exemplary embodiment of the present invention. - Referring to the Figures, wherein like numerals indicate corresponding parts throughout the several views, a
heat exchanger assembly 20 is generally indicated including a plurality oftubes 22 extending longitudinally between an inlet end and an outlet end, and a extending between a pair ofheaders FIGS. 1-3 , aninlet header 24 is in fluid communication with the inlet end of thetubes 22 for supplying a refrigerant to thetubes 22, and anoutlet header 26 is in fluid communication with the outlet end of thetubes 22 for receiving the refrigerant. Each of thetubes 22 has a cross section including a pair of sides extending laterally between an entry edge and an exit edge. A plurality ofdividers 28 extend longitudinally between the ends and between the sides to define a plurality of parallel refrigerant passages extending within eachtube 22. Theheaders tubes 22 extend horizontally between theheaders adjacent tubes 22 face one another. Thetubes 22 are vertically spaced from one another between abottom tube 30 extending adjacent the bottoms of theheaders top tube 32 extending adjacent the tops of theheaders - Referring again to
FIGS. 1 and 2 , according to the exemplary embodiments, thetubes 22 receive superheated refrigerant from theinlet header 24 and provide subcooled refrigerant to theoutlet header 26. Ablower 34 is provided immediately upstream from the entry edge of thetubes 22 to move air over the sides of thetubes 22 to cool the refrigerant. The entry edge of thetubes 22 is disposed immediately downstream of theblower 34, and the exit edge is disposed remotely downstream from theblower 34. A watering system provides a supply of water to wet each of thetubes 22. The watering system includes areservoir 36 for storing the supply of water, and a wicking coating extending along the sides of thetubes 22 for wicking water uniformly over the sides of thetubes 22. Heat from the refrigerant evaporates the water into vapor, and the vapor is carried away by theblower 34. A distributor apparatus distributes water between the ends of thetubes 22 to flow laterally across thetubes 22 from the entry edge to the exit edge. The distributor apparatus includes apipe 38 leading from thereservoir 36 to a plurality ofbranches 40, with eachbranch 40 leading to one of a plurality ofmanifolds 42 extending along the entry edges of eachtube 22. - A
screen 44 is provided adjacent the exit edge of thetubes 22 for collecting excess water flowing from eachtube 22, and awater tray 46 is provided below thescreen 44 and spaced from the exit edge of thetubes 22 for receiving the excess water from thescreen 44 and from thetubes 22. Apump 48 is provided to move water from thewater tray 46 to thereservoir 36, and anelectronic control 50 in communication with thepump 48 and thewater tray 46 activates thepump 48 according to the volume of water in thewater tray 46. To accomplish this, theelectronic control 50 includes a high levelwater tray sensor 52 positioned within thewater tray 46 to activate thepump 48 in response to a high level of water in thewater tray 46. - According to a first exemplary embodiment, shown specifically in
FIG. 1 , a supplementalwater feed line 54 is provided to supply water from a supplemental source, such as a city water line, to thewater tray 46. Asupplemental valve 56 within the supplementalwater feed line 54 is in communication with theelectronic control 50, which includes a low levelwater tray sensor 58 and a lowlevel reservoir sensor 60. If the water level in both the water tray 46 and thereservoir 36 falls below a threshold value, thesupplemental valve 56 is opened to allow water to flow from the supplemental source into thewater tray 46, as shown by the control logic ofFIG. 9 . The controller reads the level of thewater tray 46, represented as L1, and the level of thereservoir 36, represented as Lh and compares the levels first to a desired setting in each respective container, represented as Ls1 and Lsh, respectively. If the sum of the levels of the water tray 46 andreservoir 36 is less than the sum of the respective desired settings, thesupplemental valve 56 is opened. Additionally, the level of thewater tray 46 is compared to the desired setting for thewater tray 46. If L1 is greater than Ls1,pump 48 is activated to move water into thereservoir 36. Thepump 48 will stop when Lh is greater than Lsh, or will alternatively stop when L1 is less than Ls1. - According to a second exemplary embodiment, shown specifically in
FIG. 2 , the supplementalwater feed line 54 supplies water from the supplemental source directly into thereservoir 36. Theelectronic control 50 communicates with the lowlevel reservoir sensor 60 to activate thesupplemental valve 56 in response to a low level of water in thereservoir 36. If the water level in thereservoir 36 falls below a threshold value, thesupplemental valve 56 is opened to allow water to flow from the supplemental source to thereservoir 36, as shown in the control logic ofFIG. 10 . In this embodiment, only awater tray 46 sensor is used, represented again as L1, and desired setting for thewater tray 46 is represented as Ls1. When L1 is less than Ls1, thepump 48 will be stopped to prevent pumping all of the water out of thewater tray 46, and thesupplemental valve 56 will be opened to refill thewater tray 46. Once L1 becomes greater than Ls1, thepump 48 will be reactivated to fill thereservoir 36, and thesupplemental valve 56 will be closed. - The water metering system distributes a specified flow rate of water from the
reservoir 36 to the sides of thetubes 22. According to the first exemplary embodiment shown inFIG. 1 , the water metering system includes ametering valve 62 in thepipe 38 for adjustably controlling the flow rate of water from thereservoir 36 to thetubes 22. Themetering valve 62 of the present embodiment is a solenoid valve in communication with theelectronic control 50. Thereservoir 36 of the present embodiment is positioned vertically above thetop tube 32 so that gravity will draw the water from thereservoir 36 toward thetubes 22 when themetering valve 62 is opened. To initiate water flow from thereservoir 36, a high level reservoir sensor 64 communicates with theelectronic control 50 to activate the solenoid valve in response to a high level of water in thereservoir 36. Once the valve has been opened, it remains open as long as the heat exchanger is operating so that the water flow is continuous. - According to the second exemplary embodiment shown in
FIG. 2 , thereservoir 36 is positioned below or level with thetubes 22 of the heat exchanger. The water metering system includes a wicking material to draw water by capillary action from thereservoir 36 to themanifolds 42. - According to a first aspect of either embodiment, as shown in
FIGS. 1 and 2 , the sides of thetubes 22 slope downwardly from the entry edge to the exit edge. Each of the sides of thetubes 22 slope at the same angle so that the sides of thetubes 22 are parallel with each other. Alternatively, as shown inFIG. 4 , the sides of thebottom tube 30 slope at a first angle and the sides of thetop tube 32 slope at a last angle different from the first angle. Eachtube 22 between thebottom tube 30 and thetop tube 32 slopes at progressively increasing angles from the first angle to the last angle to promote more efficient wetting of the plurality oftubes 22. - According to a second aspect of either embodiment, as show in
FIG. 5 , thebottom tube 30 has a first distance between the entry edge and the exit edge and thetop tube 32 has a last distance between the entry edge and the exit edge. The last distance is greater than the first distance and each of thetubes 22 between the bottom andtop tubes - According to a third aspect of either embodiment, as shown in
FIG. 6 , the sides of thetubes 22 have a profile having a flat shape between the ends. According to a fourth aspect, as shown inFIG. 7 , the sides of thetubes 22 have a profile having an arced shape between the ends. According to a fifth aspect, as shown inFIG. 8 , the sides of thetubes 22 have a profile having a ridged semi-circular shape extending between the entry and exit edges, the profile formed as a result of extruding thetubes 22 so that the refrigerant passages have a circular shape integrally formed with one another. - While the invention has been described with reference to an exemplary embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed as the best mode contemplated for carrying out this invention, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (27)
1. A heat exchanger assembly comprising;
a plurality of tubes extending longitudinally between an inlet end and an outlet end for carrying a refrigerant between said ends,
each of said tubes having a cross section including a pair of sides extending laterally between an entry edge and an exit edge,
an inlet header in fluid communication with said inlet end of said tubes for supplying refrigerant to said passages in said tubes,
an outlet header in fluid communication with said outlet end of said tubes for receiving the refrigerant from said passages in said tubes,
a watering system for providing a supply of water to wet each of said tubes,
said watering system including a reservoir for storing the supply of water, and
said watering system including a distributor apparatus for distributing water between said ends of said tubes to flow laterally across said tubes from said entry edge to said exit edge.
2. A heat exchanger assembly as set forth in claim 1 wherein said distributor apparatus includes a plurality of manifolds with each manifold extending along a different one of said entry edges of said tubes for distributing water at said entry edges.
3. A heat exchanger assembly as set forth in claim 2 wherein said watering system includes a plurality of branches in fluid communication with said reservoir and said manifolds with each branch supplying water to a different one of said manifolds.
4. A heat exchanger assembly as set forth in claim 3 wherein said headers extend vertically between a bottom and a top and said tubes extend horizontally between said headers with said sides of adjacent tubes facing one another and vertically spaced from one another between a bottom tube extending adjacent said bottoms of said headers and a top tube extending adjacent said tops of said headers.
5. A heat exchanger assembly as set forth in claim 4 wherein said sides of said tubes slope downwardly from said entry edge to said exit edge.
6. A heat exchanger assembly as set forth in claim 5 wherein each of said sides of said tubes slope at the same angle to extend parallel with each other.
7. A heat exchanger assembly as set forth in claim 5 wherein said sides of said bottom tube slope at a first angle and said sides of said top tube slope at a last angle different from said first angle and each tube between said bottom tube and said top tube slopes at progressively increasing angles from said first angle to said last angle.
8. A heat exchanger assembly as set forth in claim 4 wherein said bottom tube has a first distance between said entry edge and said exit edge and said top tube has a last distance between said entry edge and said exit edge and wherein said last distance is greater than said first distance and wherein each of said tubes between said bottom and top tubes have a progressively increasing distance between said entry edge and said exit edge from said first distance and less than said last distance.
9. A heat exchanger assembly as set forth in claim 4 including a water tray spaced from said exit edges of said tubes for receiving excess water exiting from each tube.
10. A heat exchanger assembly as set forth in claim 9 further comprising a screen positioned adjacent said exit edge of said tubes for collecting excess water flowing from each tube and for delivering the excess water into said water tray.
11. A heat exchanger assembly as set forth in claim 9 including a pump for moving water from said water tray to said reservoir.
12. A heat exchanger assembly as set forth in claim 11 including an electronic control in communication with said pump and said water tray for activating said pump in response to the volume of water in said water tray.
13. A heat exchanger assembly as set forth in claim 12 wherein said electronic control includes a high level water tray sensor for activating said pump in response to a high level of water in said water tray.
14. A heat exchanger assembly as set forth in claim 13 including a supplemental water feed line for selectively supplying water from a supplemental source to said water tray and a supplemental valve in said supplemental water feed line in communication with said electronic control and said electronic control including a low level water tray sensor and a low level reservoir sensor for activating said supplemental valve in response to a low level of water in said water tray and in said reservoir.
15. A heat exchanger assembly as set forth in claim 13 including a supplemental water feed line for selectively supplying water from a supplemental source to said reservoir and a supplemental valve in said supplemental water feed line in communication with said electronic control and said electronic control including a low level reservoir sensor for activating said supplemental valve in response to a low level of water in said reservoir.
16. A heat exchanger assembly as set forth in claim 12 further comprising a water metering system for distributing a specified flow rate of water from said reservoir to said sides of said tubes.
17. A heat exchanger assembly as set forth in claim 16 wherein said water metering system includes a wicking material for drawing water by capillary action from said reservoir to said manifolds.
18. A heat exchanger assembly as set forth in claim 16 wherein said water metering system includes a metering valve between said reservoir and said branches for adjustably controlling the flow rate of water from said reservoir to said tubes.
19. A heat exchanger assembly as set forth in claim 18 wherein said metering valve comprises a solenoid valve in communication with said electronic control.
20. A heat exchanger assembly as set forth in claim 19 wherein said electronic control includes a high level reservoir sensor for activating said solenoid valve in response to a high level of water in said reservoir.
21. A heat exchanger assembly as set forth in claim 4 wherein said sides of said tubes have a profile having a flat shape between said ends.
22. A heat exchanger assembly as set forth in claim 4 wherein said sides of said tubes have a profile having an arced shape between said ends.
23. A heat exchanger assembly as set forth in claim 4 wherein said sides of said tubes have a profile having a ridged semi-circular shape extending between said entry and exit edges.
24. A heat exchanger assembly as set forth in claim 4 including a wicking coating extending along said sides of said tubes for wicking water uniformly over said sides of said tubes.
25. A heat exchanger assembly as set forth in claim 4 further comprising a blower for moving air over said sides of said tubes.
26. A heat exchanger assembly as set forth in claim 25 further comprising said entry edge of said tubes disposed immediately downstream of said blower and said exit edge of said tubes disposed remotely downstream from said blower.
27. A heat exchanger assembly comprising;
a plurality of tubes extending longitudinally between an inlet end and an outlet end for carrying a refrigerant longitudinally between said ends,
each of said tubes having a cross section including a pair of sides extending laterally between an entry edge and an exit edge and including dividers extending longitudinally between said ends and between said sides to define a plurality of parallel refrigerant passages,
an inlet header in fluid communication with said inlet end of said tubes for supplying the refrigerant to said passages in said tubes,
an outlet header in fluid communication with said outlet end of said tubes for receiving the refrigerant from said passages in said tubes,
said headers extending vertically between a bottom and a top and said tubes extending horizontally between said headers with said sides of adjacent tubes facing one another and vertically spaced from one another between a bottom tube extending adjacent said bottoms of said headers and a top tube extending adjacent said tops of said headers,
a blower for moving air over said sides of said tubes,
said entry edge of said tubes disposed immediately downstream of said blower and said exit edge of said tubes disposed remotely downstream from said blower,
a watering system for providing a supply of water to wet each of said tubes,
said watering system including a reservoir for storing the supply of water,
a wicking coating extending along said sides of said tubes for wicking water uniformly over said sides of said tubes,
said watering system including a distributor apparatus for distributing water between said ends of said tubes to flow laterally across said tubes from said entry edge to said exit edge,
said distributor apparatus including a plurality of manifolds extending along said entry edges of each tube in fluid communication with said reservoir,
said watering system including a pipe in fluid communication with said reservoir and a plurality of branches in fluid communication with said pipe with each branch supplying water to said entry edge of a different one of said tubes,
a screen positioned adjacent said exit edge of said tubes for collecting excess water flowing from each tube,
a water tray positioned below said screen and spaced from said exit edge of said tubes for receiving the excess water therefrom,
a pump for moving water from said water tray to said reservoir,
an electronic control in communication with said pump and said water tray for activating said pump in response to the volume of water in said water tray, and
a water metering system for distributing a specified flow rate of water from said reservoir to said sides of said tubes.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US11/716,344 US20080216498A1 (en) | 2007-03-09 | 2007-03-09 | Evaporatively cooled heat exchanger |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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US11/716,344 US20080216498A1 (en) | 2007-03-09 | 2007-03-09 | Evaporatively cooled heat exchanger |
Publications (1)
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US20080216498A1 true US20080216498A1 (en) | 2008-09-11 |
Family
ID=39740271
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US11/716,344 Abandoned US20080216498A1 (en) | 2007-03-09 | 2007-03-09 | Evaporatively cooled heat exchanger |
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US (1) | US20080216498A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010040635A1 (en) * | 2008-10-08 | 2010-04-15 | A-Heat Allied Heat Exchange Technology Ag | Heat exchanger assembly and method for the operation thereof |
US20140231042A1 (en) * | 2013-02-19 | 2014-08-21 | Thomas R. Curry | System for Reducing the Condensing Temperature of a Refrigeration or Air Conditioning System by Utilizing Harvested Rainwater |
CN110160284A (en) * | 2019-04-15 | 2019-08-23 | 合肥华凌股份有限公司 | Refrigeration equipment |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5187946A (en) * | 1991-09-24 | 1993-02-23 | Yefim Rotenberg | Apparatus & Method for indirect evaporative cooling of a fluid |
US6247326B1 (en) * | 1998-12-29 | 2001-06-19 | Pichit Likitcheva | Evaporative condensing unit utilizing normal and unsaturated air |
US20020029578A1 (en) * | 2000-09-08 | 2002-03-14 | Moon Dong Soo | Device for disposing of condensate from small sized air conditioner |
US6460363B1 (en) * | 2001-05-16 | 2002-10-08 | Carrier Corporation | Split housing for outdoor heat exchanger |
US6497107B2 (en) * | 2000-07-27 | 2002-12-24 | Idalex Technologies, Inc. | Method and apparatus of indirect-evaporation cooling |
US20030041604A1 (en) * | 2001-09-05 | 2003-03-06 | Ching-Shiang Jang | Device for enhancing efficiency of air-conditioner |
US20050241327A1 (en) * | 2004-04-29 | 2005-11-03 | Carrier Commerical Refrigeration, Inc. | Foul-resistant condenser using microchannel tubing |
US7043933B1 (en) * | 2003-08-26 | 2006-05-16 | Isothermal Systems Research, Inc. | Spray coolant reservoir system |
-
2007
- 2007-03-09 US US11/716,344 patent/US20080216498A1/en not_active Abandoned
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5187946A (en) * | 1991-09-24 | 1993-02-23 | Yefim Rotenberg | Apparatus & Method for indirect evaporative cooling of a fluid |
US6247326B1 (en) * | 1998-12-29 | 2001-06-19 | Pichit Likitcheva | Evaporative condensing unit utilizing normal and unsaturated air |
US6497107B2 (en) * | 2000-07-27 | 2002-12-24 | Idalex Technologies, Inc. | Method and apparatus of indirect-evaporation cooling |
US20020029578A1 (en) * | 2000-09-08 | 2002-03-14 | Moon Dong Soo | Device for disposing of condensate from small sized air conditioner |
US6460363B1 (en) * | 2001-05-16 | 2002-10-08 | Carrier Corporation | Split housing for outdoor heat exchanger |
US20030041604A1 (en) * | 2001-09-05 | 2003-03-06 | Ching-Shiang Jang | Device for enhancing efficiency of air-conditioner |
US7043933B1 (en) * | 2003-08-26 | 2006-05-16 | Isothermal Systems Research, Inc. | Spray coolant reservoir system |
US20050241327A1 (en) * | 2004-04-29 | 2005-11-03 | Carrier Commerical Refrigeration, Inc. | Foul-resistant condenser using microchannel tubing |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010040635A1 (en) * | 2008-10-08 | 2010-04-15 | A-Heat Allied Heat Exchange Technology Ag | Heat exchanger assembly and method for the operation thereof |
US20110209860A1 (en) * | 2008-10-08 | 2011-09-01 | A-Heat Allied Heat Exchange Technology Ag | Heat exchanger arrangement and method for the operation of same |
US20140231042A1 (en) * | 2013-02-19 | 2014-08-21 | Thomas R. Curry | System for Reducing the Condensing Temperature of a Refrigeration or Air Conditioning System by Utilizing Harvested Rainwater |
CN110160284A (en) * | 2019-04-15 | 2019-08-23 | 合肥华凌股份有限公司 | Refrigeration equipment |
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Owner name: DELPHI TECHNOLOGIES, INC., MICHIGAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:BHATTI, MOHINDER SINGH;REYZIN, ILYA;BENOIT, JOHN;AND OTHERS;REEL/FRAME:019083/0856;SIGNING DATES FROM 20070226 TO 20070228 |
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STCB | Information on status: application discontinuation |
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