US3710852A - Double effect absorption heating and cooling system - Google Patents
Double effect absorption heating and cooling system Download PDFInfo
- Publication number
- US3710852A US3710852A US00183336A US3710852DA US3710852A US 3710852 A US3710852 A US 3710852A US 00183336 A US00183336 A US 00183336A US 3710852D A US3710852D A US 3710852DA US 3710852 A US3710852 A US 3710852A
- Authority
- US
- United States
- Prior art keywords
- effect generator
- evaporator
- heat exchange
- vapor passage
- vapor
- 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.)
- Expired - Lifetime
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B15/00—Sorption machines, plants or systems, operating continuously, e.g. absorption type
- F25B15/008—Sorption machines, plants or systems, operating continuously, e.g. absorption type with multi-stage operation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B29/00—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
- F25B29/006—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously of the sorption type system
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
-
- 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]
- Y02B30/62—Absorption based systems
Definitions
- ABSTRACT An absorption machine having a two-stage generator, wherein the machine is adapted to provide cooling, heating or simultaneous heating and cooling.
- the machine includes an improved hermetic valve useful in the heating mode.
- the present invention therefore seeks to provide a system of heating or cooling or simultaneous heating and cooling with a double effect absorption machine which avoids the disadvantages of prior art devices.
- the present invention provides an absorption refrigeration machine having first and second effect generators, an evaporator, a condenser, and an absorber, all of which are operably interconnected to provide an absorption refrigeration cycle.
- the vapor passage between the first and second effect generators includes a chamber portion housing a heat exchange coil through which fluid may be circulated in heat exchange relationship with the vapor from the first effect generator. In this manner, the machine may provide simultaneous heating and cooling.
- a second vapor passage is provided from the chamber portion to the evaporator, and a vapor valve is positioned in the second vapor passage. When the vapor valve is in the open position, the first effect generator and the evaporator are in vapor communication whereby substantially all of the vapor produced in the first effect generator is passed to the evaporator to provide a heating only cycle ofoperation.
- FIG. 1 is a schematic view of a double effect absorption machine contemplated in the present invention.
- FIG. 2 is an enlarged view of the vapor valve shown in FIG. 1.
- FIG. 3 is a sectional view of the valve of FIG. 2 showing its internal mechanism.
- a double effect absorption machine is shown.
- a first effect generator 10 includes a fire tube 11 and heat transfer tubes 12. While the first effect generator 10 is shown to be of the direct fired type, it will be understood that other means of providing heat energy to the generator can also be used, such as a steam coil in a manner well known in the art.
- a second effect generator is shown generally at 13 and includes a heat exchange coil 14. The second effect generator 13 is in vapor communication with the first effect generator 10 by means of vapor passage 15, chamber 16, and vapor passage 17.
- heat exchanger 18 housed in chamber 16 is heat exchanger 18, below which may be positioned a pan 19 having a conduit 20 leading therefrom.
- the function of the pan 19 is to collect condensate from heat exchanger 18 and pass the condensate back to the first effect generator 10 via conduit 20. If desired, the condensate may also be passed via a conduit (shown in phantom) directly to the condenser 21.
- Condenser 21 is preferably housed in the same shell with second effect generator 13.
- the generator 13 and condenser 21 are separated by wall 22, but may be in vapor communication by way of eliminators 23.
- Condenser 21 is provided with a cooling coil 24 through which cooling water may be circulated, after which the water is generally returned to a cooling tower (not shown). Before passing through coil 24, the water may pass through heat exchange coil 26 in absorber section 27.
- Condensate may be removed from condenser 21 by means of conduit 28 communicating with the suctiogn side of evaporator pump 29.
- the condensate is pumped through conduit 30 to the spray headers 31 located in evaporator 32.
- the evaporator 32 includes a heat exchange coil 33 which conducts a heat exchange fluid such as water from a load source through the evaporator and back to the load.
- the load source is typically one or more spaces in a building to be cooled or heated.
- Refrigerant which is not boiled off on heat exchange coil 33 is collected in the evaporator pan of 34, and withdrawn from the evaporator through conduit 35 back to the suction side of evaporator pump 29 from where it is recirculated to spray headers 31.
- Refrigerant which is vaporized in the evaporator is drawn into the absorber 27 by the attraction of the absorbent solution being sprayed over heat exchange coil 26 from spray headers 36.
- Spray headers 36 are fed by conduit 37 from the discharge side of absorber pump 38.
- Dilute solution is withdrawn from absorber 27 through conduit 39 through which it is fed both to the suction side of generator pump 40 by means of conduit 41, and the suction side of absorber pump 38 by means of conduit 42. That portion of the dilute solution fed to absorber pump 38 is then recirculated via conduit 37 to spray headers 36 in the absorber 27, after first having been mixed with absorbent solution from the shell side of heat exchanger 43 passing to the absorber pump 38 through conduit 44.
- Generator pump 40 provides dilute solution to the first effect generator 10 by means of conduit 45, the tube side of heat exchanger 43, conduit 46, the tube side of heat exchanger 47 and conduit 48.
- Absorbent solution which has been partially concentrated in first effect generator 10 passes through conduit 49, the shell side of heat exchanger 47, conduit 50, and into second effect generator 13.
- the partially concentrated solution is further concentrated in second effect generator 13 by means of heat exchange with vapor flowing through the coil 14.
- the refrigerant vapor produced in the second effect generator passes through eliminators 23 into the condenser section, and the concentrated solution is withdrawn from the second effect generator 13 by means of conduit 51, through the shell side of heat exchanger 43, and through conduit 44 into the absorber pump 38 to be distributed.
- an absorbent solution comprised of lithium bromide in water
- water water
- concentrated solution refers to a solution which is concentrated in absorbent
- dilute solution refers to a solution which is dilute in absorbent, that is, rich in refrigerant.
- Chamber 16 and evaporator 32 are connected by means of conduit 52.
- conduit 52 Disposed within conduit 52 is a normally closed valve 53 which will be described in greater detail hereinafter. It can be seen, however, that when valve 53 is open, a vapor passage is formed between the first effect generator and the evaporator 32 through conduit 15, chamber 16, and conduit 52.
- valve 53 includes conduit portion 54, housing portion 55, which in turn includes housing cap 56.
- a fluid pressure line 57 connects housing cap 56 with solenoid valve 58.
- Solenoid valve 58 has a fluid supply line 60, preferably communicating with the outlet side of generator pump 40, and an outlet or vent line 59 between valve 58 and absorber 27.
- a diaphragm 61 is captured between housing cap 56 and the upper flange of housing 55. Diaphragm 61 rides on 'a plunger cap 62 of plunger mechanism 63. Plunger mechanism 63 is urged in an upward or closed position by means of spring 64 which is held between the lower portion of housing 55 and the plunger cap 62.
- the lower portion of plunger mechanism 63 includes a disc portion 66 having an inset resilient ring 65. The ring 65 insures that the plunger mechanism 63 will sealingly engage valve seat 67 when the plunger mechanism is in the closed position.
- solenoid valve 58 When solenoid valve 58 allows fluid to pass through conduit 57, fluid pressure is built up in chamber 68 formed by diaphragm 61 and housing cap 56. The increase in fluid pressure on diaphragm 61 then urges a plunger mechanism 63 4 downwardly, compressing spring 64, and moving disc portion 66 away from the valve seat 67, allowing vapor to flow through conduit portion 54 of valve 53.
- solenoid 58 interrupts the flow of fluid through conduit 57, venting remaining pressure through conduit 59 into the absorber. This action allows plunger mechanism 63 to be urged upwardly by the expansion of spring 64, bringing disc portion 66 and ring 65 into a closed relationship with valve seat 67.
- an absorption machine In general, the primary function of an absorption machine is to provide refrigeration for a building, and
- valve 53 will always be fully closed. Dilute solution is fed into the first effect generator 10 through conduit 48. A source of heat energy such as gas or oil is consumed, with its heat being fed into fire tube 11 and heat exchange tubes 12 in the first effect generator. The heat causes the refrigerant in the solution to be boiled off and the heated refrigerant vapor passes out of the first effect generator via vapor passage 15, the partially concentrated solution being drawn off through conduit 49, heat exchanger 47, conduit 50 into the second effect generator 13.
- Vapor from conduit 15 passes into chamber 16, and since valve 53 is closed, passes through conduit 17 into the heat exchange coil 14 and the second effect generator.
- the heat from the vapor in the heat exchange coil 14 causes further boiling of the intermediate solution in second effect generator 13 causing the intermediate solution to become more concentrated.
- the vapor phase passes thro'ugh eliminators 23 into the condenser 21.
- the concentrated solution is removed from the second effect generator via conduit 51 and passes through heat exchanger 43 to conduit 44 and to the suction side of the absorber pump.
- the vapor is condensed in condenser 21 through the heat exchange with the cooling water flowing through heat exchange coil 24. Condensed vapor, along with any liquid flowing from heat exchange coil 14 is collected in the bottom of the condenser 21 in the area of wall 22. From the condenser the liquid is drawn off through conduit 28 to the suction side of evaporator pump 29.
- Evaporator pump 29 receives the condensate from the condenser, and also the condensed liquid from the evaporator pan 34 and discharges them through conduit 30 to the evaporator spray headers 31.
- the refrigerant from spray headers 31 passes over heat exchange coil 33, cooling the water from the refrigeration load and providing chilled water to the building for air conditioning purposes.
- the vaporous refrigerant created in the evaporator is drawn into the absorber section 27 to mix with absorbent solution being sprayed from spray headers 36.
- the intermediate solution from spray headers 36 mixes with the refrigerant vapor and collects in the lower portion of absorber 27 as dilute absorbent solution, having passed in heat exchange relationship with the cooling water flowing through heat exchanger coil 26.
- the dilute solution is withdrawn from the absorber via conduit 39 and delivered to the suction side of generator pump 40 in part, and is also in part delivered to the suction side of absorber pump 38.
- the dilute solution is pumped by generator pump 40 through heat exchangers 43 and 47 to the first effect generator 10 to complete the absorption refrigeration cycle.
- the heated vapor present in chamber 16 provides a potential source of heating for the building installation.
- heat exchange coil 18 is provided in chamber 16, through which a heat transfer fluid such as water may be circulated to various rooms within the building for heating purposes.
- a heat transfer fluid such as water
- the flow of heat transfer fluid through heat exchanger 18 may be terminated, whereby all of the heat available in the vapor may be passed to heat exchange coil 14 in the second effect generator 13.
- the machine of the present invention is well adapted to providing both heating and cooling to the building simultaneously in accordance with the individual demands of the particular zones within the installation.
- solenoid 58 may be activated to allow fluid pressure through conduit 60 to conduit 57 to actuate valve 53.
- the fluid pressure acts upon diaphragm 61 compressing spring 64 and opening the valve.
- the cooling water through heat exchange coil 26 in absorber 27 and heat exchange coil 24 in condenser 21 is terminated.
- valve 53 With valve 53 in the open position, substantially all of the vapor produced in first effect generator passes through a vapor passage 15, chamber 16, and conduit 52, into the evaporator 32.
- the heated vapor passes in heat exchange relationship with the heat transfer fluid in heat exchange coil 33 thereby providing heated fluid to the spaces in the building which are to be heated.
- the heat exchange causes the vapor to condense and fall to the evaporator pan 34, from where it will spill over into absorber 27.
- the condensed refrigerant passing into absorber 27 will mix with the absorbent solution being sprayed from spray headers 36 to form dilute solution in the lower portion of the absorber 27.
- the dilute solution then passes via conduit 39 back to generator pump 40 to be delivered back to the first effect generator 10.
- the concentrated solution, or in this case more correctly intermediate solution, produced in the first effect generator 10 is drawn off via conduit 49 through heat exchanger 47 and through conduit 50 into the second stage generator 13.
- the solution then passes through conduit 51, heat exchanger 43, and conduit 44 to the absorber pump 42 for further delivery to the absorber spray headers 46 through conduit 47. It can therefore be seen that with valve 53 in the open position, the machine can only be operated on a heating cycle.
- solenoid valve 58 When it is desired to change over from a heating only cycle to a cooling cycle or a heating and cooling cycle, solenoid valve 58 is activated to terminate the fluid flow through line 60 and line 57.
- the existing pressure is bleed off through line 59, the fluid flowing into absorbcr 27, thereby removing the fluid pressure from diaphragm 61 allowing the spring 64 to extend to bring valve 53 to the closed position.
- the absorber and condenser cooling water can then be restarted and the machine operated in a cooling or simultaneous heating and cooling mode as has been described in detail herein before.
- valve 53 is operated by fluid pressure internal to the absorption system, for example, by
- valve 53 IS completely ermetic in its structure and operation.
- An absorption refrigeration machine including a first effect generator, a second effect generator, a condenser, an evaporator, and an absorber in operable communication to produce an absorption refrigeration cycle including first vapor passage means between said first and second effect generators; heat exchange means in said first vapor passage means; second vapor passage means between said first effect generator and said evaporator, valve means disposed in said second vapor passage means whereby said machine is operable in a heating only cycle when said valve means is open.
- An absorption refrigeration machine including a first effect generator, a second effect generator, a condenser, an evaporator, and an absorber operably connected to provide an absorption refrigeration cycle, including first vapor passage means between said first and second effect generators; heat exchange means disposed in said first vapor passage adjacent said first effect generator adapted to pass a fluid in heat exchange relationship with the vapor from said first effect generator to heat said fluid-whereby said machine provides silultaneous heating and cooling; second vapor passage means between said first effect generator and said evaporator, valve means disposed in said second vapor passage, substantially all of the vapor produced in said first effect generator being passed to said evaporator when said valve means is open whereby said machine provides heating only.
- valve means is hermetic.
- valve means is operable in response to absorbent solution pressure.
- the apparatus of claim 2 having a first shell housing said first effect generator, a second shell housing said heat exchange means, a third shell housing said evaporator and said absorber, and a fourth shell housing said second effect generator and said condenser.
- valve means is mounted downstream of said heat exchange means.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Sorption Type Refrigeration Machines (AREA)
Abstract
Description
Claims (9)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US18333671A | 1971-09-24 | 1971-09-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3710852A true US3710852A (en) | 1973-01-16 |
Family
ID=22672399
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00183336A Expired - Lifetime US3710852A (en) | 1971-09-24 | 1971-09-24 | Double effect absorption heating and cooling system |
Country Status (7)
Country | Link |
---|---|
US (1) | US3710852A (en) |
JP (1) | JPS4841344A (en) |
AU (1) | AU457165B2 (en) |
CA (1) | CA968169A (en) |
DE (1) | DE2247211A1 (en) |
GB (1) | GB1368869A (en) |
IT (1) | IT966039B (en) |
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3837174A (en) * | 1973-03-16 | 1974-09-24 | Sanyo Electric Co | Control device for an absorption system hot and cold water supply apparatus |
US4014183A (en) * | 1974-07-02 | 1977-03-29 | Yazaki Sogyo Kabushiki Kaisha | Absorption refrigerator of natural circulation type |
US4085595A (en) * | 1975-12-29 | 1978-04-25 | Ebara Manufacturing Co., Ltd. | Double effect absorption refrigerating system |
EP0001858A1 (en) * | 1977-10-28 | 1979-05-16 | N.V. Nederlandse Gasunie | Heating method and bi-modal heating system for heating of buildings |
US4183228A (en) * | 1977-03-22 | 1980-01-15 | Naoyuki Inoue | Double effect absorption refrigerating system comprising |
US4209364A (en) * | 1974-04-10 | 1980-06-24 | Rothschild Herbert F | Process of water recovery and removal |
US4280331A (en) * | 1978-11-07 | 1981-07-28 | Sanyo Electric Co., Ltd. | Single effect and double effect absorption refrigerating system |
US4294076A (en) * | 1979-05-30 | 1981-10-13 | Sanyo Electric Co. Ltd. | Absorption refrigerating system |
US4742687A (en) * | 1984-11-13 | 1988-05-10 | Columbia Gas System Service Corporation | Dual cooling/heating process and composition |
US5295371A (en) * | 1992-08-06 | 1994-03-22 | Sanyo Electric Co., Ltd. | Single-and double-effect absorption refrigerator |
US5600960A (en) * | 1995-11-28 | 1997-02-11 | American Standard Inc. | Near optimization of cooling tower condenser water |
US6085532A (en) * | 1999-02-05 | 2000-07-11 | American Standard Inc. | Chiller capacity control with variable chilled water flow compensation |
US20060053829A1 (en) * | 2002-09-27 | 2006-03-16 | Ebara Corporation | Absorption refrigerator |
CN101793441A (en) * | 2010-03-12 | 2010-08-04 | 大连海事大学 | Lithium bromide absorption type refrigerating machine and refrigerating method thereof |
CN101871705A (en) * | 2009-04-24 | 2010-10-27 | 萨曼斯有限公司 | Cooler-heat pump |
CN110671837A (en) * | 2018-07-03 | 2020-01-10 | 北京先锋锐创环境技术有限公司 | Open lithium bromide unit that heats in step |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS571739B2 (en) * | 1973-08-24 | 1982-01-12 | ||
JPS5817390B2 (en) * | 1978-08-10 | 1983-04-06 | 三洋電機株式会社 | Heat recovery type absorption chiller/heater |
DE3212608A1 (en) * | 1982-04-05 | 1983-10-06 | Georg Alefeld | STORAGE HEATING SYSTEM WITH SORPTION STORAGE |
CN109882911B (en) * | 2019-04-16 | 2023-12-19 | 北京华电东晟科技有限公司 | Coupled heat pump type heating power station |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2853275A (en) * | 1954-10-01 | 1958-09-23 | Carrier Corp | Air conditioning system |
US3177930A (en) * | 1960-09-26 | 1965-04-13 | Arkla Ind | Refrigeration system |
US3292385A (en) * | 1965-08-31 | 1966-12-20 | Space Conditioning Inc | Process and apparatus for simultaneous generation of hot and cold fluids in an absorption refrigeration system |
US3605432A (en) * | 1968-01-26 | 1971-09-20 | Masaji Wada | Absorption refrigerating system |
-
1971
- 1971-09-24 US US00183336A patent/US3710852A/en not_active Expired - Lifetime
-
1972
- 1972-09-21 CA CA152,288A patent/CA968169A/en not_active Expired
- 1972-09-22 GB GB4405972A patent/GB1368869A/en not_active Expired
- 1972-09-25 AU AU47038/72A patent/AU457165B2/en not_active Expired
- 1972-09-25 IT IT52962/72A patent/IT966039B/en active
- 1972-09-25 JP JP47096065A patent/JPS4841344A/ja active Pending
- 1972-09-25 DE DE19722247211 patent/DE2247211A1/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2853275A (en) * | 1954-10-01 | 1958-09-23 | Carrier Corp | Air conditioning system |
US3177930A (en) * | 1960-09-26 | 1965-04-13 | Arkla Ind | Refrigeration system |
US3292385A (en) * | 1965-08-31 | 1966-12-20 | Space Conditioning Inc | Process and apparatus for simultaneous generation of hot and cold fluids in an absorption refrigeration system |
US3605432A (en) * | 1968-01-26 | 1971-09-20 | Masaji Wada | Absorption refrigerating system |
Cited By (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3837174A (en) * | 1973-03-16 | 1974-09-24 | Sanyo Electric Co | Control device for an absorption system hot and cold water supply apparatus |
US4209364A (en) * | 1974-04-10 | 1980-06-24 | Rothschild Herbert F | Process of water recovery and removal |
US4014183A (en) * | 1974-07-02 | 1977-03-29 | Yazaki Sogyo Kabushiki Kaisha | Absorption refrigerator of natural circulation type |
US4085595A (en) * | 1975-12-29 | 1978-04-25 | Ebara Manufacturing Co., Ltd. | Double effect absorption refrigerating system |
US4183228A (en) * | 1977-03-22 | 1980-01-15 | Naoyuki Inoue | Double effect absorption refrigerating system comprising |
EP0001858A1 (en) * | 1977-10-28 | 1979-05-16 | N.V. Nederlandse Gasunie | Heating method and bi-modal heating system for heating of buildings |
US4280331A (en) * | 1978-11-07 | 1981-07-28 | Sanyo Electric Co., Ltd. | Single effect and double effect absorption refrigerating system |
US4294076A (en) * | 1979-05-30 | 1981-10-13 | Sanyo Electric Co. Ltd. | Absorption refrigerating system |
US4742687A (en) * | 1984-11-13 | 1988-05-10 | Columbia Gas System Service Corporation | Dual cooling/heating process and composition |
US5295371A (en) * | 1992-08-06 | 1994-03-22 | Sanyo Electric Co., Ltd. | Single-and double-effect absorption refrigerator |
US5600960A (en) * | 1995-11-28 | 1997-02-11 | American Standard Inc. | Near optimization of cooling tower condenser water |
US6085532A (en) * | 1999-02-05 | 2000-07-11 | American Standard Inc. | Chiller capacity control with variable chilled water flow compensation |
US6276152B1 (en) | 1999-02-05 | 2001-08-21 | American Standard International Inc. | Chiller capacity control with variable chilled water flow compensation |
US20060053829A1 (en) * | 2002-09-27 | 2006-03-16 | Ebara Corporation | Absorption refrigerator |
US7225634B2 (en) * | 2002-09-27 | 2007-06-05 | Ebara Corporation | Absorption refrigerating machine |
CN101871705A (en) * | 2009-04-24 | 2010-10-27 | 萨曼斯有限公司 | Cooler-heat pump |
CN101871705B (en) * | 2009-04-24 | 2012-11-21 | 萨曼斯有限公司 | Cooler-heat pump |
CN101793441A (en) * | 2010-03-12 | 2010-08-04 | 大连海事大学 | Lithium bromide absorption type refrigerating machine and refrigerating method thereof |
CN110671837A (en) * | 2018-07-03 | 2020-01-10 | 北京先锋锐创环境技术有限公司 | Open lithium bromide unit that heats in step |
Also Published As
Publication number | Publication date |
---|---|
AU4703872A (en) | 1974-04-11 |
IT966039B (en) | 1974-02-11 |
AU457165B2 (en) | 1975-01-16 |
GB1368869A (en) | 1974-10-02 |
JPS4841344A (en) | 1973-06-16 |
CA968169A (en) | 1975-05-27 |
DE2247211A1 (en) | 1973-03-29 |
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Legal Events
Date | Code | Title | Description |
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AS | Assignment |
Owner name: TRANE COMPANY, THE Free format text: MERGER;ASSIGNOR:A-S CAPITAL INC. A CORP OF DE;REEL/FRAME:004334/0523 |
|
AS | Assignment |
Owner name: TRANE COMPANY THE Free format text: MERGER;ASSIGNORS:TRANE COMPANY THE, A CORP OF WI (INTO);A-S CAPITAL INC., A CORP OF DE (CHANGED TO);REEL/FRAME:004372/0370 Effective date: 19840224 Owner name: AMERICAN STANDARD INC., A CORP OF DE Free format text: MERGER;ASSIGNORS:TRANE COMPANY, THE;A-S SALEM INC., A CORP. OF DE (MERGED INTO);REEL/FRAME:004372/0349 Effective date: 19841226 |
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Owner name: A-S CAPITAL INC., A CORP OF DE Free format text: MERGER;ASSIGNOR:TRANE COMPANY THE A WI CORP;REEL/FRAME:004432/0765 Effective date: 19840224 |
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Owner name: BANKERS TRUST COMPANY, NEW YORK Free format text: SECURITY INTEREST;ASSIGNOR:TRANE AIR CONDITIONING COMPANY, A DE CORP.;REEL/FRAME:004905/0213 Effective date: 19880624 Owner name: BANKERS TRUST COMPANY, 4 ALBANY STREET, 9TH FLOOR, Free format text: SECURITY INTEREST;ASSIGNOR:TRANE AIR CONDITIONING COMPANY, A DE CORP.;REEL/FRAME:004905/0213 Effective date: 19880624 Owner name: BANKERS TRUST COMPANY Free format text: SECURITY INTEREST;ASSIGNOR:AMERICAN STANDARD INC., A DE. CORP.,;REEL/FRAME:004905/0035 Effective date: 19880624 |
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Owner name: CHEMICAL BANK, AS COLLATERAL AGENT, NEW YORK Free format text: ASSIGNMENT OF SECURITY INTEREST;ASSIGNOR:BANKERS TRUST COMPANY, AS COLLATERAL TRUSTEE;REEL/FRAME:006565/0753 Effective date: 19930601 |
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Owner name: AMERICAN STANDARD, INC., NEW JERSEY Free format text: RELEASE OF SECURITY INTEREST (RE-RECORD TO CORRECT DUPLICATES SUBMITTED BY CUSTOMER. THE NEW SCHEDULE CHANGES THE TOTAL NUMBER OF PROPERTY NUMBERS INVOLVED FROM 1133 TO 794. THIS RELEASE OF SECURITY INTEREST WAS PREVIOUSLY RECORDED AT REEL 8869, FRAME 0001.);ASSIGNOR:CHASE MANHATTAN BANK, THE (FORMERLY KNOWN AS CHEMICAL BANK);REEL/FRAME:009123/0300 Effective date: 19970801 |
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Owner name: AMERICAN STANDARD, INC., NEW JERSEY Free format text: RELEASE OF SECURITY INTEREST;ASSIGNOR:CHASE MANHATTAN BANK, THE (FORMERLY KNOWN AS CHEMICAL BANK);REEL/FRAME:008869/0001 Effective date: 19970801 |