WO1996016303B1 - Generator-absorber heat exchange heat transfer apparatus and method using an intermediate liquor and use thereof in an absorption heat pump - Google Patents

Generator-absorber heat exchange heat transfer apparatus and method using an intermediate liquor and use thereof in an absorption heat pump

Info

Publication number
WO1996016303B1
WO1996016303B1 PCT/US1995/014019 US9514019W WO9616303B1 WO 1996016303 B1 WO1996016303 B1 WO 1996016303B1 US 9514019 W US9514019 W US 9514019W WO 9616303 B1 WO9616303 B1 WO 9616303B1
Authority
WO
WIPO (PCT)
Prior art keywords
generator
absorber
heat
heat transfer
liquor
Prior art date
Application number
PCT/US1995/014019
Other languages
French (fr)
Other versions
WO1996016303A1 (en
Filing date
Publication date
Priority claimed from US08/347,255 external-priority patent/US5570584A/en
Application filed filed Critical
Priority to JP8516874A priority Critical patent/JPH09511825A/en
Priority to DE69507944T priority patent/DE69507944T2/en
Priority to MX9602901A priority patent/MX9602901A/en
Priority to EP95938977A priority patent/EP0739471B1/en
Priority to AU40161/95A priority patent/AU4016195A/en
Publication of WO1996016303A1 publication Critical patent/WO1996016303A1/en
Publication of WO1996016303B1 publication Critical patent/WO1996016303B1/en

Links

Abstract

Numerous embodiments and related methods for generator-absorber heat exchange (GAX) are disclosed, particularly for absorption heat pump systems. Such embodiments and related methods use the working solution of the absorption system for the heat transfer medium where the working solution has an intermediate liquor concentration.

Claims

AMENDED CLAIMS
[received by the International Bureau on 18 May 1996 (18.05.96); original claims 1-5, 7-9, 33, 57, 68, 73, 77, 85, 91, 99 and 100 amended; remaining claims unchanged (11 pages)]
1. In a generator-absorber heat exchange apparatus including a generator and an absorber, the absorber having an interior pressure lower than the pressure of the generator interior and each having high and low temperature regions at opposite ends establishing respective temperature ranges, the temperature ranges defining respective overlapping heat transfer regions, and a fluid flow pathway circulating a liquor having rich, intermediate and weak concentrations of refrigerant to and through the high temperature, heat transfer and low temperature regions of the generator and the absorber, the improvement comprising: a heat exchange circuit receiving a liquor from said fluid flow pathway at a location where the liquor has an intermediate liquor concentration and circulating said intermediate liquor between said heat transfer regions thereby transferring heat from the absorber to the generator.
2. The apparatus of claim 1 wherein the heat exchange circuit comprises at least one heat exchange element in the heat transfer region of the absorber, and a conduit conducting said intermediate liquor from the fluid flow pathway through said heat exchange element and between heat transfer regions.
3. The apparatus of claim 1 wherein the heat exchange circuit comprises a plurality of heat exchange elements, at least one being disposed in the heat transfer region of each of the generator and absorber, and a conduit conducting said intermediate liquor from the fluid flow pathway serially to each heat exchange element alternately between heat transfer regions.
4. The apparatus of claim 1 wherein the heat exchange circuit further comprises a heat exchange circuit pump for circulating said intermediate liquor.
5. The apparatus of claim 1 wherein gravity provides the motive force for circulating said intermediate liquor. 6. The apparatus of claim 1 wherein the heat exchange circuit further comprises an input end in fluid communication with the fluid flow pathway.
7. The apparatus of claim 5 wherein the heat exchange circuit further comprises an output end for distributing said intermediate liquor within one of the generator and the absorber.
8. The apparatus of claim 1 wherein the intermediate liquor circulated between heat transfer regions of the generator and absorber is substantially in the liquid state.
9. The apparatus of claim 1 wherein the intermediate liquor circulated between heat transfer regions of the generator and absorber is a two phase mixture of liquid and vapor in at least a portion of the heat exchange circuit.
10. A generator-absorber heat exchange apparatus comprising: a generator containing a liquor having a concentration gradient that is rich proximate an upper end, weak proximate a lower end and intermediate therebetween, and a temperature gradient extending from low proximate the upper end to high proximate the lower end with a heat transfer region therebetween; an absorber having a pressure in its interior lower than the interior pressure of the generator and containing a liquor having a concentration gradient that is weak proximate an upper end, rich proximate a lower end and intermediate therebetween, and a temperature gradient extending from high proximate the upper end to low proximate the lower end with a heat transfer region therebetween; a rich liquor conduit having an inlet in fluid communication with the absorber proximate the lower end thereof and an outlet disposed in the generator proximate the upper end thereof distributing rich liquor from the lower end of the absorber for passage along the concentration and temperature gradients of the generator; 31. The apparatus of claim 30 wherein the motive force for circulating said intermediate liquor is gravity.
32. The apparatus of claim 30 wherein the intermediate liquor circulated between heat transfer regions of the generator and absorber is a two phase mixture of liquid and vapor in at least a portion of the heat exchange circuit.
33. The apparatus of claim 30 wherein said input and output ends are located in different regions of the generator.
34. The apparatus of claim 33 wherein said input end is a liquid accumulator and said output end is a distributor.
35. The apparatus of claim 13 wherein said heat exchange circuit comprises: a heat exchange element disposed in the heat transfer region of the generator and a heat exchange element disposed in the heat transfer region of the absorber; a heat exchange conduit with said input end receiving intermediate liquor from the generator and said output end distributing said intermediate liquor to the generator, said heat exchange conduit serially interconnecting said heat exchange elements to conduct said intermediate liquor between the generator and absorber heat transfer regions.
36. The apparatus of claim 35 wherein the heat exchange circuit further comprises a heat exchange circuit pump for circulating said intermediate liquor.
37. The apparatus of claim 35 wherein the intermediate liquor circulated between heat transfer regions of the generator and absorber is a two phase mixture of liquid and vapor in at least a portion of the heat exchange circuit.
38. The apparatus of claim 35 wherein said input and output ends are located in substantially the same region of the generator. 54. The apparatus of claim 53 wherein the heat exchange circuit further comprises a heat exchange circuit pump for circulating said intermediate liquor.
55. The apparatus of claim 53 wherein the intermediate liquor circulated between heat transfer regions of the generator and absorber is substantially in the liquid state.
56. The apparatus of claim 53 wherein said input end is a liquid accumulator and said output end is a distributor.
57. A heat pump comprising: an indoor liquid to air heat exchanger; an outdoor liquid to air heat exchanger; a generator-absorber heat exchange apparatus comprising: a generator and an absorber, the absorber having an interior pressure lower than the interior pressure of the generator and each having high and low temperature regions at opposite ends and a heat transfer region, the temperature ranges defining the respective heat transfer regions overlapping; a fluid flow pathway for circulation of a weak liquor from the high temperature region of the generator and a rich liquor from the low temperature region of the absorber to and through the high temperature and low temperature regions of the generator and the absorber; a heat exchange circuit receiving a liquor from the fluid flow pathway from an input end in fluid communication with the fluid flow pathway at a location where the liquor has an intermediate concentration and circulating the intermediate liquor between the heat transfer regions of the generator and the absorber for heat transfer therein; and 65. The heat pump of claim 64 wherein said heat exchange circuit further comprises a heat exchange element disposed in the heat transfer region of the generator.
66. The heat pump of claim 58 wherein said heat exchange circuit comprises: at least two heat exchange elements disposed in the heat transfer region of the generator and at least three heat exchange elements disposed in the heat transfer region of the absorber; a heat exchange conduit with said input end receiving intermediate liquor from the absorber and said output end distributing said intermediate liquor to the generator, said heat exchange conduit serially interconnecting said heat exchange elements to conduct said intermediate liquor between the generator and absorber heat transfer regions.
67. A method for transferring heat between an absorber and a generator in a generator-absorber heat exchange apparatus including a generator and an absorber, the absorber having an interior pressure lower than the pressure of the generator interior and each having high and low temperature regions at opposite ends establishing respective temperature ranges, the temperature ranges defining respective overlapping heat transfer regions, and a fluid flow pathway circulating a liquor having rich, intermediate and weak concentrations of refrigerant to and through the high temperature, heat transfer and low temperature regions of the generator and the absorber, said method comprising: circulating a liquor having an intermediate concentration between the heat transfer region of the absorber and the heat transfer region of the generator.
68. The method for transferring heat between an absorber and a generator in accordance with claim 67, wherein said method comprises: circulating intermediate liquor from an input end disposed to receive intermediate liquor from the generator, through the heat transfer region of the absorber and the heat transfer region of the generator, to an output end in the generator, such that the temperature of the intermediate liquor from the heat transfer region of said absorber is greater than the temperature of the region of the generator to which the intermediate liquor is circulated, thereby transferring heat to the generator from said intermediate liquor.
69. The method of claim 68, wherein said method comprises: circulating the intermediate liquor alternately between said heat transfer regions serially via two heat exchange elements disposed in the heat transfer region of the absorber and two heat exchange elements disposed in the heat transfer region of the generator, thereby transferring heat via the intermediate liquor from the heat transfer region of the absorber to the heat transfer region of the generator.
70. The method of claim 69 wherein the intermediate liquor is circulated by a heat exchange circuit pump.
71. The method of claim 69 wherein the intermediate liquor circulated between heat transfer regions of the generator and absorber is substantially in the liquid state.
72. The method of claim 69 wherein said input and output ends are located in substantially the same region of the generator.
73. The method for transferring heat between an absorber and a generator in accordance with claim 67, wherein said method comprises: circulating intermediate liquor from an input end disposed to receive intermediate liquor from the generator, through the heat transfer region of the absorber and the heat transfer region of the generator such that the temperature of the intermediate liquor from the heat transfer region of said absorber is greater than the temperature of the region of the generator to which the intermediate liquor is circulated, thereby transferring heat to the generator from said intermediate liquor.
74. The method of claim 73, wherein said method comprises: circulating the intermediate liquor alternately between said heat transfer regions serially via a heat exchange element disposed in the heat transfer region of the absorber and a heat exchange element disposed in the heat transfer region of the generator, thereby transferring heat via the intermediate liquor from the heat transfer region of the absorber to the heat transfer region of the generator.
75. The method of claim 74 wherein the intermediate liquor is circulated by a heat exchange circuit pump.
76. The method of claim 74 wherein the intermediate liquor circulated between heat transfer regions of the generator and absorber is substantially in the liquid state.
77. The method for transferring heat between an absorber and a generator in accordance with claim 67, wherein said method comprises: circulating intermediate liquor from an input end disposed to receive intermediate liquor from the generator, through the heat transfer region of the absorber to an output end in the generator, such that the temperature of the intermediate liquor from the heat transfer region of said absorber is greater than the temperature of the region of the generator to which the intermediate liquor is circulated, thereby transferring heat to the generator from said intermediate liquor.
78. The method of claim 77, wherein said method comprises: circulating the intermediate liquor between said heat transfer regions via a heat exchange element disposed in the heat transfer region of the absorber, thereby transferring heat via the intermediate liquor from the heat transfer region of the absorber to the heat transfer region of the generator. 79. The method of claim 78 wherein the intermediate liquor circulated between heat transfer regions of the generator and absorber is a two phase mixture of liquid and vapor in at least a portion of the heat exchange circuit.
80. The method of claim 78 wherein said input and output ends are located in different regions of the generator.
81. The method of claim 68, wherein said method comprises: circulating the intermediate liquor between said heat transfer regions via a heat exchange element disposed in the heat transfer region of the absorber and a heat exchange element disposed in the heat transfer region of the generator, thereby transferring heat via the intermediate liquor from the heat transfer region of the absorber to the heat transfer region of the generator.
82. The method of claim 81 wherein the intermediate liquor is circulated by a heat exchange circuit pump.
83. The method of claim 81 wherein the intermediate liquor circulated between heat transfer regions of the generator and absorber is a two phase mixture of liquid and vapor in at least a portion of the heat exchange circuit.
84. The method of claim 81 wherein said input and output ends are located in substantially the same region of the generator.
85. The method for transferring heat between an absorber and a generator in accordance with claim 67, wherein said method comprises: circulating intermediate liquor from an input end disposed to receive intermediate liquor from the absorber, through the heat transfer region of the absorber and through the heat transfer region of the generator to an output end in the absorber, such that the temperature of the intermediate liquor from the heat transfer region of said absorber is greater than the temperature of the region of the generator to which the intermediate liquor is circulated, thereby transferring heat to the generator from said intermediate liquor.
86. The method of claim 85, wherein said method comprises: circulating the intermediate liquor between said heat transfer regions via at least one heat exchange element disposed in the heat transfer region of the absorber and at least one heat exchange element disposed in the heat transfer region of the generator, thereby transferring heat via the intermediate liquor from the heat transfer region of the absorber to the heat transfer region of the generator.
87. The method of claim 86 wherein the intermediate liquor is circulated by a heat exchange circuit pump.
88. The method of claim 86 wherein the intermediate liquor circulated between heat transfer regions of the generator and absorber is a two phase mixture of liquid and vapor in at least a portion of the heat exchange circuit.
89. The method of claim 86 wherein the intermediate liquor circulated between heat transfer regions of the generator and absorber is substantially in the liquid state.
90. The method of claim 87 wherein said input and output ends are located in substantially the same region of the absorber.
91. The method for transferring heat between an absorber and a generator in accordance with claim 68, wherein said method comprises: circulating intermediate liquor from an input end disposed to receive intermediate liquor from the absorber, through the heat transfer region of the absorber and through the heat transfer region of the generator to an output end in the generator, such that the temperature of the intermediate liquor from the heat transfer region of said absorber is greater than the temperature of the region of the generator to which the intermediate liquor is circulated, thereby transferring heat to the generator from said intermediate liquor. - 70 -
99. A method of transferring heat between a region of medium temperature and a region of high temperature using a generator-absorber heat exchange apparatus including a generator and an absorber, the absorber having an interior pressure lower than the pressure of the generator interior and each having high and low temperature regions at opposite ends establishing respective temperature ranges, the temperature ranges defining respective overlapping heat transfer regions, and a fluid flow pathway circulating a liquor having rich, intermediate and weak concentrations of refrigerant to and through the high temperature, heat transfer and low temperature regions of the generator and the absorber, said method comprising: circulating an antifreeze fluid between an outdoor heat exchanger and at least one of an absorber heat exchanger, a condenser heat exchanger and a generator heat exchanger, thereby transferring heat via said antifreeze fluid from said at least one absorber, condenser and generator heat exchanger to said outdoor heat exchanger; circulating an antifreeze fluid between an indoor heat exchanger and an evaporator heat exchanger, thereby transferring heat via said antifreeze fluid from said indoor heat exchanger to said evaporator heat exchanger; and wherein said generator-absorber heat exchange apparatus includes a heat exchange circuit disposed to receive a liquor from the fluid flow pathway at a location where the liquor has an intermediate liquor concentration and to circulate said intermediate liquor between said heat transfer regions to transfer heat from the absorber to the generator.
100. A method of transferring heat between a region of low temperature and a region of medium temperature using a generator-absorber heat exchange apparatus including a generator and an absorber, the absorber having an interior pressure lower than the pressure of the generator interior and each having high and low temperature regions at opposite ends establishing respective temperature ranges, the - 71 -
temperature ranges defining respective overlapping heat transfer regions, and a fluid flow pathway circulating a liquor having rich, intermediate and weak concentrations of refrigerant to and through the high temperature, heat transfer and low temperature regions of the generator and the absorber, said method comprising: circulating an antifreeze fluid between an indoor heat exchanger and at least one of an absorber heat exchanger, a condenser heat exchanger and a generator heat exchanger, thereby transferring heat via said antifreeze fluid from said at least one absorber, condenser and generator heat exchanger to said indoor heat exchanger; circulating an antifreeze fluid between an outdoor heat exchanger and an evaporator heat exchanger, thereby transferring heat via said antifreeze fluid from said outdoor heat exchanger to said evaporator heat exchanger; and wherein said generator-absorber heat exchange apparatus includes a heat exchange circuit disposed to receive a liquor from the fluid flow pathway at a location where the liquor has an intermediate liquor concentration and to circulate said intermediate liquor between said heat transfer regions to transfer heat from the absorber to the generator.
PCT/US1995/014019 1994-11-23 1995-10-27 Generator-absorber heat exchange heat transfer apparatus and method using an intermediate liquor and use thereof in an absorption heat pump WO1996016303A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP8516874A JPH09511825A (en) 1994-11-23 1995-10-27 Generator-absorber type heat exchange / heat transfer device and method of using medium concentration liquid and its use in absorption heat pump
DE69507944T DE69507944T2 (en) 1994-11-23 1995-10-27 A INTERMEDIATE LIQUID HEAT EXCHANGE DEVICE AND METHOD FOR EXCHANGING HEAT BETWEEN OUTPUTERS AND ABSORBERS AND USE THEREOF IN AN ABSORPTION HEAT PUMP
MX9602901A MX9602901A (en) 1994-11-23 1995-10-27 Generator-absorber heat exchange heat transfer apparatus and method using an intermediate liquor and use thereof in an absorption heat pump.
EP95938977A EP0739471B1 (en) 1994-11-23 1995-10-27 Generator-absorber heat exchange heat transfer apparatus and method using an intermediate liquor and use thereof in an absorption heat pump
AU40161/95A AU4016195A (en) 1994-11-23 1995-10-27 Generator-absorber heat exchange heat transfer apparatus and method using an intermediate liquor and use thereof in an absorption heat pump

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/347,255 US5570584A (en) 1991-11-18 1994-11-23 Generator-Absorber heat exchange transfer apparatus and method using an intermediate liquor
US08/347,255 1994-11-23

Publications (2)

Publication Number Publication Date
WO1996016303A1 WO1996016303A1 (en) 1996-05-30
WO1996016303B1 true WO1996016303B1 (en) 1996-07-11

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PCT/US1995/014019 WO1996016303A1 (en) 1994-11-23 1995-10-27 Generator-absorber heat exchange heat transfer apparatus and method using an intermediate liquor and use thereof in an absorption heat pump

Country Status (11)

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US (1) US5570584A (en)
EP (1) EP0739471B1 (en)
JP (1) JPH09511825A (en)
CN (1) CN1139482A (en)
AU (1) AU4016195A (en)
CA (1) CA2180747A1 (en)
DE (1) DE69507944T2 (en)
ES (1) ES2132747T3 (en)
MX (1) MX9602901A (en)
TW (1) TW308638B (en)
WO (1) WO1996016303A1 (en)

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