WO1993006423A1 - Method of high-side pressure regulation in transcritical vapor compression cycle device - Google Patents
Method of high-side pressure regulation in transcritical vapor compression cycle device Download PDFInfo
- Publication number
- WO1993006423A1 WO1993006423A1 PCT/NO1991/000119 NO9100119W WO9306423A1 WO 1993006423 A1 WO1993006423 A1 WO 1993006423A1 NO 9100119 W NO9100119 W NO 9100119W WO 9306423 A1 WO9306423 A1 WO 9306423A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- throttling valve
- pressure
- refrigerant
- gas cooler
- circuit
- Prior art date
Links
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
- F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
- F25B9/002—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant
- F25B9/008—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant the refrigerant being carbon dioxide
-
- 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
- F25B41/33—Expansion valves with the valve member being actuated by the fluid pressure, e.g. by the pressure of the refrigerant
-
- 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
- F25B45/00—Arrangements for charging or discharging refrigerant
-
- 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
- F25B2309/00—Gas cycle refrigeration machines
- F25B2309/06—Compression machines, plants or systems characterised by the refrigerant being carbon dioxide
- F25B2309/061—Compression machines, plants or systems characterised by the refrigerant being carbon dioxide with cycle highest pressure above the supercritical pressure
-
- 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
- F25B2341/00—Details of ejectors not being used as compression device; Details of flow restrictors or expansion valves
- F25B2341/06—Details of flow restrictors or expansion valves
- F25B2341/063—Feed forward expansion valves
-
- 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
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/16—Receivers
-
- 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
- F25B2600/00—Control issues
- F25B2600/17—Control issues by controlling the pressure of the condenser
Definitions
- the present invention relates to vapor compression cycle devices such as refrigerating, air-conditioning and heat pump systems, operating under transcritical conditions, and more particularly to a method of high-side pressure regulation maintaining optimum operation with respect to energy con ⁇ sumption-
- a co-pending PCT application, publication No. WO 90/07683, discloses a transcritical vapor compression cycle device and a method for regulating its capacity based on modulation of the supercritical high-side pressure.
- the system consists of a compressor, a gas cooler (condenser) , an internal heat ex ⁇ changer, an evaporator and a receiver. Capacity control is achieved by varying the liquid inventory of the low pressure refrigerant receiver situated intermediate the evaporator and the compressor, where a throttling valve between the high pressure outlet of the internal heat exchanger and evaporator inlet is applied as steering means.
- the high-side pressure at less than full capacity should be adjusted in accordance with the actual operating conditions (load) of the unit, in order to achieve minimum energy con ⁇ sumption at the given capacity requirement.
- the actual opera ⁇ ting conditions may be defined by refrigerant temperatures or pressures, by external temperatures or by the capacity re ⁇ quirements.
- Any available state-of-the-art capacity control system e.g. on/off, variable capacity compressor or variable speed control, can be used separately and independently of the throttling valve steering in the disclosed circuit to regulate the cooling or heating capacity. Consequently, it was necessary to develop a new throttling valve control strategy to obtain optimal operation with respect to energy consumption of the disclosed vapor compression device.
- a steering strategy for the throttling valve in the transcritical vapor compression circuit based on application of predetermined values of optimal high-side pressure corresponding to the detected actual operating conditions of the circuit.
- the detection of the operating conditions is done by measurement of a temperature at or near the gas cooler (con ⁇ denser) outlet, and the valve position is modulated to the predetermined set-point pressure by an appropriate control system.
- Fig. 1 is a graph illustrating the theoretical relationship between cooling capacity (Q 0 ) , compressor shaft power
- Fig. 2 is a graphic illustration of the theoretical re ⁇ lationship between optimum high-side pressure, providing maximum ratio between cooling capacity and shaft power, and gas cooler (condenser) outlet refrigerant temperature at three different evapora ⁇ ting temperatures, and
- Fig. 3 is a schematic representation of a transcritical vapor compression cycle device constructed in ac ⁇ cordance with a preferred embodiment of the inven ⁇ tion. Detailed description of the invention
- a well known peculiarity of transcritical cycles (operating with the refrigerant compressed to a supercritical pressure in the high-side) is that the coefficient of performance COP, defined as the ratio between the refrigerating capacity and applied compressor shaft power, can be raised by increasing the high-side pressure, while the gas cooler (condenser) outlet refrigerant temperature is maintained mainly constant. This can be illustrated by means of a conventional pressure enthalpy diagram.
- the COP increases with increasing high-side pressure only up to a certain level and then begins to decline as the extra refrigerating effect no longer fully compensates for the extra work of compression.
- a diagram showing the cooling capacity (Q 0 ) , compressor shaft power (P) and their ratio (COP) as a function of high-side pressure can be pro ⁇ vided.
- Fig. 1 illustrates such a diagram generated for refrig ⁇ erant C0 2 at a constant evaporating and gas cooler (condenser) outlet temperature, based on theoretical cycle calculations.
- the COP reaches a maximum as indicated.
- the detected refrigerant temperature at the gas cooler (condenser) outlet or some other temperature or parameter corresponding to this will be the only sig ⁇ nificant steering parameter required as input for control of the throttling valve.
- a back-pressure controller as throttling valve may give certain advantages in that internal compensation for varying refrigerant mass flow and density is obtained.
- a throttling valve with back-pressure control will keep the inlet pressure, i.e. high-side pressure, at the set point regardless of refrigerant mass flow and inlet refrigerant temperature.
- the set-point of the back-pressure controller is then regulated by means of an actuator operating in accordance with the pre ⁇ determined control scheme indicated above.
- Fig. 3 illustrates a preferred embodiment of the transcritical refrigerating circuit comprising a compressor 10 connected in series to a gas cooler (condenser) 11, an internal counterflow heat exchanger 12 and a throttling valve 13.
- An evaporator 14 and a low pressure liquid receiver 16 are connected inter ⁇ mediate the throttling valve and the compressor.
- a temperature sensor at the gas cooler (condenser) refrigerant outlet 5 provides information on the operating conditions of the circuit to the control system 7 e.g. a microprosessor.
- the throttling valve 13 is equipped with an actuator 9 and the valve position is automatically modulated in accordance with the predetermined set-point pressure characteristics by the control system.
- the circuit is now provided with a throttling valve 13 based on a simple mechanical back-pressure controller eliminating use of the microprocessor and electronic control of the valve shown in Example l.
- the regulator is equipped with a temperature sensor bulb 5 situated at or near the gas cooler (condenser) refrigerant outlet.
- the pressure resulting from the sensor bulb temperature mechanically adjusts the set-point of the back-pressure controller according to the gas cooler (condenser) outlet refrigerant temperature.
- the gas cooler condenser
- the circuit is based on one of the throttling valve control concepts described in Examples 1 or 2, but instead of locating the temperature sensor or sensor bulb at the gas cooler (condenser) refrigerant outlet, the sensor or sensor bulb measures the inlet temperature of the cooling agent to which heat is rejected.
- the sensor or sensor bulb measures the inlet temperature of the cooling agent to which heat is rejected.
- the signal from a temperature sensor or bulb may be replaced by a signal representing the desired cooling or heating capacity of the system. Due to the correspondence between ambient temperature and load, this signal may serve as a basis for regulating throttling valve set-point pressure.
Abstract
Description
Claims
Priority Applications (13)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/NO1991/000119 WO1993006423A1 (en) | 1991-09-16 | 1991-09-16 | Method of high-side pressure regulation in transcritical vapor compression cycle device |
JP3515570A JP2931668B2 (en) | 1991-09-16 | 1991-09-16 | High side pressure regulation method in supercritical vapor compression circuit |
EP91916351A EP0604417B1 (en) | 1991-09-16 | 1991-09-16 | Control of high-side pressure in transcritical vapor compression cycle |
ES91916351T ES2088502T3 (en) | 1991-09-16 | 1991-09-16 | PRESSURE CONTROL ON THE HIGH PRESSURE SIDE IN A TRANSCRITICAL STEAM COMPRESSION CYCLE. |
AT91916351T ATE137009T1 (en) | 1991-09-16 | 1991-09-16 | HIGH PRESSURE CONTROL IN A TRANSCRITICAL STEAM COMPRESSION CIRCUIT |
DK91916351.9T DK0604417T3 (en) | 1991-09-16 | 1991-09-16 | Control of pressure on the high pressure side in a transcritical vapor compression cycle |
RU9194030805A RU2088865C1 (en) | 1991-09-16 | 1991-09-16 | Method of control of pressure at delivery side in steam-compression cycle plant at supercritical compression of steam (versions) and plant for realization of this method |
AU85301/91A AU669473B2 (en) | 1991-09-16 | 1991-09-16 | Method of high-side pressure regulation in transcritical vapor compression cycle device |
CA002119015A CA2119015C (en) | 1991-09-16 | 1991-09-16 | Method of high-side pressure regulation in transcritical vapor compression cycle device |
DE69118924T DE69118924T2 (en) | 1991-09-16 | 1991-09-16 | HIGH PRESSURE CONTROL IN A TRANSCRITICAL VAPOR COMPRESSION CIRCUIT |
BR9107318A BR9107318A (en) | 1991-09-16 | 1991-09-16 | High side pressure modulation process in a transcritical vapor compression device, and vapor compression cycle device |
KR1019940700840A KR100245958B1 (en) | 1991-09-16 | 1994-03-15 | Vapor compression cycle device and the method of high side pressure regulation in the device |
NO940936A NO180603C (en) | 1991-09-16 | 1994-03-16 | Method of high pressure regulation in a transcritical compression cooling system and a compression cooling system for carrying out the same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/NO1991/000119 WO1993006423A1 (en) | 1991-09-16 | 1991-09-16 | Method of high-side pressure regulation in transcritical vapor compression cycle device |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1993006423A1 true WO1993006423A1 (en) | 1993-04-01 |
Family
ID=19907665
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/NO1991/000119 WO1993006423A1 (en) | 1991-09-16 | 1991-09-16 | Method of high-side pressure regulation in transcritical vapor compression cycle device |
Country Status (13)
Country | Link |
---|---|
EP (1) | EP0604417B1 (en) |
JP (1) | JP2931668B2 (en) |
KR (1) | KR100245958B1 (en) |
AT (1) | ATE137009T1 (en) |
AU (1) | AU669473B2 (en) |
BR (1) | BR9107318A (en) |
CA (1) | CA2119015C (en) |
DE (1) | DE69118924T2 (en) |
DK (1) | DK0604417T3 (en) |
ES (1) | ES2088502T3 (en) |
NO (1) | NO180603C (en) |
RU (1) | RU2088865C1 (en) |
WO (1) | WO1993006423A1 (en) |
Cited By (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1994014016A1 (en) * | 1992-12-11 | 1994-06-23 | Sinvent A/S | Trans-critical vapour compression device |
EP0701096A3 (en) * | 1994-09-09 | 1997-11-12 | Daimler-Benz Aktiengesellschaft | Method for operating a cold producing installation for air conditioning of vehicles and cold producing installation carrying out the same |
WO1998030847A1 (en) * | 1997-01-08 | 1998-07-16 | Norild As | Refrigeration system with closed circuit circulation |
FR2777640A1 (en) * | 1998-04-20 | 1999-10-22 | Denso Corp | SUPERCRITICAL REFRIGERATION CYCLE SYSTEM |
EP0931991A3 (en) * | 1998-01-21 | 1999-11-17 | Denso Corporation | Supercritical refrigerating system |
EP0960755A1 (en) | 1998-05-28 | 1999-12-01 | Valeo Climatisation | Air conditioning circuit using a refrigerant fluid in a supercritical state, in particular for a vehicle |
EP0960756A1 (en) | 1998-05-28 | 1999-12-01 | Valeo Climatisation | Air conditionning device using a refrigerant fluid in a supercritical state |
DE19829335A1 (en) * | 1998-07-01 | 2000-02-03 | Kki Klima-, Kaelte- Und Industrieanlagen Schmitt Kg | Refrigeration system has an intermediate heat exchanger between the condenser and refrigerant expansion unit to heat the refrigerant vapour |
EP0952344A3 (en) * | 1998-04-16 | 2000-03-01 | Kabushiki Kaisha Toyoda Jidoshokki Seisakusho | Flow control valve for a variable displacement refrigerant compressor |
WO2000068621A1 (en) * | 1999-05-11 | 2000-11-16 | Zexel Valeo Climate Control Corporation | Method of controlling refrigerating cycle and refrigerating cycle using the method |
WO2001006183A1 (en) * | 1999-07-16 | 2001-01-25 | Zexel Valeo Climate Control Corporation | Refrigerating cycle |
WO2001006182A1 (en) * | 1999-07-16 | 2001-01-25 | Bosch Automotive Systems Corporation | Refrigerating cycle |
FR2796595A1 (en) * | 1999-07-22 | 2001-01-26 | Valeo Climatisation | Relief valve for pressure control of car air-conditioning system has bulb filled with control fluid, and placed in trajectory of air flow for controlling valve as function of pressure of control fluid |
WO2001027543A1 (en) * | 1999-10-08 | 2001-04-19 | Zexel Valeo Climate Control Corporation | Refrigerating cycle |
US6343486B1 (en) | 1999-06-08 | 2002-02-05 | Mitsubishi Heavy Industries, Ltd. | Supercritical vapor compression cycle |
EP0915306B1 (en) * | 1997-11-06 | 2003-04-09 | Denso Corporation | Supercritical refrigerating apparatus |
EP1329677A2 (en) | 2002-01-22 | 2003-07-23 | Carrier Corporation | Transcritical vapor compression system |
US6895769B2 (en) | 2003-02-03 | 2005-05-24 | Calsonic Kansei Corporation | Air conditioning apparatus using supercritical refrigerant for vehicle |
EP1582826A1 (en) * | 2004-03-29 | 2005-10-05 | Andreas Bangheri | Heat pump and method for cyclic vapour compression |
WO2006087005A1 (en) * | 2005-02-18 | 2006-08-24 | Carrier Corporation | Method for controlling high-pressure in an intermittently supercritically operating refrigeration circuit |
US7131291B2 (en) * | 2001-09-03 | 2006-11-07 | Sinvent As | Compression system for cooling and heating purposes |
US7302807B2 (en) | 2002-03-28 | 2007-12-04 | Matsushita Electric Industrial Co., Ltd. | Refrigerating cycle device |
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US7559206B2 (en) | 2004-06-23 | 2009-07-14 | Denso Corporation | Supercritical heat pump cycle system |
US7607315B2 (en) | 2004-06-09 | 2009-10-27 | Denso Corporation | Pressure control valve and vapor-compression refrigerant cycle system using the same |
US8157538B2 (en) | 2007-07-23 | 2012-04-17 | Emerson Climate Technologies, Inc. | Capacity modulation system for compressor and method |
US8308455B2 (en) | 2009-01-27 | 2012-11-13 | Emerson Climate Technologies, Inc. | Unloader system and method for a compressor |
USRE44636E1 (en) | 1997-09-29 | 2013-12-10 | Emerson Climate Technologies, Inc. | Compressor capacity modulation |
US10378533B2 (en) | 2011-12-06 | 2019-08-13 | Bitzer Us, Inc. | Control for compressor unloading system |
CN112432376A (en) * | 2020-11-24 | 2021-03-02 | 同济大学 | Carbon dioxide refrigerating and freezing system and intelligent switching-mixing control method |
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JPH1163694A (en) * | 1997-08-21 | 1999-03-05 | Zexel Corp | Refrigeration cycle |
JP3365273B2 (en) * | 1997-09-25 | 2003-01-08 | 株式会社デンソー | Refrigeration cycle |
JP4196450B2 (en) * | 1997-11-06 | 2008-12-17 | 株式会社デンソー | Supercritical refrigeration cycle |
JP4075129B2 (en) | 1998-04-16 | 2008-04-16 | 株式会社豊田自動織機 | Control method of cooling device |
DE19832480A1 (en) * | 1998-07-20 | 2000-01-27 | Behr Gmbh & Co | Vehicle air conditioning system with carbon dioxide working fluid is designed for limited variation in efficiency over a given range of high pressure deviation, avoiding need for controls on high pressure side |
JP4207340B2 (en) * | 1999-03-15 | 2009-01-14 | 株式会社デンソー | Refrigeration cycle |
JP3838008B2 (en) * | 2000-09-06 | 2006-10-25 | 松下電器産業株式会社 | Refrigeration cycle equipment |
US6523365B2 (en) * | 2000-12-29 | 2003-02-25 | Visteon Global Technologies, Inc. | Accumulator with internal heat exchanger |
JP2003294338A (en) * | 2002-03-29 | 2003-10-15 | Japan Climate Systems Corp | Heat exchanger |
DE10337136A1 (en) * | 2003-08-11 | 2005-03-24 | Behr Gmbh & Co. Kg | Air conditioning and method for controlling the heating power of the same |
US6959557B2 (en) | 2003-09-02 | 2005-11-01 | Tecumseh Products Company | Apparatus for the storage and controlled delivery of fluids |
US6923011B2 (en) | 2003-09-02 | 2005-08-02 | Tecumseh Products Company | Multi-stage vapor compression system with intermediate pressure vessel |
US7096679B2 (en) | 2003-12-23 | 2006-08-29 | Tecumseh Products Company | Transcritical vapor compression system and method of operating including refrigerant storage tank and non-variable expansion device |
DE102005044029B3 (en) * | 2005-09-14 | 2007-03-22 | Stiebel Eltron Gmbh & Co. Kg | Heat pump for heating water for heating purposes comprises a coolant circuit operated in the supercritical region and having a de-super heater, a vaporizer, a compressor and a throttle valve and a control unit |
JP2007139342A (en) * | 2005-11-21 | 2007-06-07 | Mitsubishi Heavy Ind Ltd | Air conditioner and pressure control valve for the same |
JP2013124802A (en) * | 2011-12-14 | 2013-06-24 | Panasonic Corp | Refrigeration cycle apparatus |
EP2951512B1 (en) * | 2013-01-31 | 2022-03-30 | Carrier Corporation | Multi-compartment transport refrigeration system with economizer |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1591302A (en) * | 1925-06-09 | 1926-07-06 | William S Franklin | Automatic expansion valve for refrigerating systems |
US3400555A (en) * | 1966-05-02 | 1968-09-10 | American Gas Ass | Refrigeration system employing heat actuated compressor |
US3413815A (en) * | 1966-05-02 | 1968-12-03 | American Gas Ass | Heat-actuated regenerative compressor for refrigerating systems |
US3638446A (en) * | 1969-06-27 | 1972-02-01 | Robert T Palmer | Low ambient control of subcooling control valve |
US4205532A (en) * | 1977-05-02 | 1980-06-03 | Commercial Refrigeration (Wiltshire) Limited | Apparatus for and method of transferring heat |
WO1990007683A1 (en) * | 1989-01-09 | 1990-07-12 | Sinvent As | Trans-critical vapour compression cycle device |
SE463533B (en) * | 1987-04-13 | 1990-12-03 | Handelsbolaget Heliovent | Arrangement for temperature-based refrigerant control in a heat pump |
US5042262A (en) * | 1990-05-08 | 1991-08-27 | Liquid Carbonic Corporation | Food freezer |
-
1991
- 1991-09-16 RU RU9194030805A patent/RU2088865C1/en not_active IP Right Cessation
- 1991-09-16 WO PCT/NO1991/000119 patent/WO1993006423A1/en active IP Right Grant
- 1991-09-16 CA CA002119015A patent/CA2119015C/en not_active Expired - Lifetime
- 1991-09-16 EP EP91916351A patent/EP0604417B1/en not_active Expired - Lifetime
- 1991-09-16 AU AU85301/91A patent/AU669473B2/en not_active Ceased
- 1991-09-16 DE DE69118924T patent/DE69118924T2/en not_active Expired - Lifetime
- 1991-09-16 AT AT91916351T patent/ATE137009T1/en not_active IP Right Cessation
- 1991-09-16 DK DK91916351.9T patent/DK0604417T3/en active
- 1991-09-16 ES ES91916351T patent/ES2088502T3/en not_active Expired - Lifetime
- 1991-09-16 JP JP3515570A patent/JP2931668B2/en not_active Expired - Fee Related
- 1991-09-16 BR BR9107318A patent/BR9107318A/en unknown
-
1994
- 1994-03-15 KR KR1019940700840A patent/KR100245958B1/en not_active IP Right Cessation
- 1994-03-16 NO NO940936A patent/NO180603C/en not_active IP Right Cessation
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1591302A (en) * | 1925-06-09 | 1926-07-06 | William S Franklin | Automatic expansion valve for refrigerating systems |
US3400555A (en) * | 1966-05-02 | 1968-09-10 | American Gas Ass | Refrigeration system employing heat actuated compressor |
US3413815A (en) * | 1966-05-02 | 1968-12-03 | American Gas Ass | Heat-actuated regenerative compressor for refrigerating systems |
US3638446A (en) * | 1969-06-27 | 1972-02-01 | Robert T Palmer | Low ambient control of subcooling control valve |
US4205532A (en) * | 1977-05-02 | 1980-06-03 | Commercial Refrigeration (Wiltshire) Limited | Apparatus for and method of transferring heat |
SE463533B (en) * | 1987-04-13 | 1990-12-03 | Handelsbolaget Heliovent | Arrangement for temperature-based refrigerant control in a heat pump |
WO1990007683A1 (en) * | 1989-01-09 | 1990-07-12 | Sinvent As | Trans-critical vapour compression cycle device |
US5042262A (en) * | 1990-05-08 | 1991-08-27 | Liquid Carbonic Corporation | Food freezer |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN, Vol. 13, No. 489, M888; & JP,A,01 193 561, publ 1989-08-03 (EBARA RES CO LTD). * |
Cited By (46)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5655378A (en) * | 1992-12-11 | 1997-08-12 | Sinvent A/S | Trans-critical vapor compression device |
WO1994014016A1 (en) * | 1992-12-11 | 1994-06-23 | Sinvent A/S | Trans-critical vapour compression device |
EP0701096A3 (en) * | 1994-09-09 | 1997-11-12 | Daimler-Benz Aktiengesellschaft | Method for operating a cold producing installation for air conditioning of vehicles and cold producing installation carrying out the same |
WO1998030847A1 (en) * | 1997-01-08 | 1998-07-16 | Norild As | Refrigeration system with closed circuit circulation |
US6112532A (en) * | 1997-01-08 | 2000-09-05 | Norild As | Refrigeration system with closed circuit circulation |
USRE44636E1 (en) | 1997-09-29 | 2013-12-10 | Emerson Climate Technologies, Inc. | Compressor capacity modulation |
EP0915306B1 (en) * | 1997-11-06 | 2003-04-09 | Denso Corporation | Supercritical refrigerating apparatus |
EP0931991A3 (en) * | 1998-01-21 | 1999-11-17 | Denso Corporation | Supercritical refrigerating system |
US6134900A (en) * | 1998-01-21 | 2000-10-24 | Denso Corporation | Supercritical refrigerating system |
US6260369B1 (en) | 1998-04-16 | 2001-07-17 | Kabushiki Kaisha Toyoda Jidoshokki Seisakusho | Flow control valve for a variable displacement refrigerant compressor |
EP1635058A1 (en) * | 1998-04-16 | 2006-03-15 | Kabushiki Kaisha Toyota Jidoshokki | Flow control valve for a variable displacement refrigerant compressor |
EP0952344A3 (en) * | 1998-04-16 | 2000-03-01 | Kabushiki Kaisha Toyoda Jidoshokki Seisakusho | Flow control valve for a variable displacement refrigerant compressor |
FR2777640A1 (en) * | 1998-04-20 | 1999-10-22 | Denso Corp | SUPERCRITICAL REFRIGERATION CYCLE SYSTEM |
FR2779215A1 (en) | 1998-05-28 | 1999-12-03 | Valeo Climatisation | AIR CONDITIONING CIRCUIT USING A SUPERCRITICAL REFRIGERANT FLUID, PARTICULARLY FOR VEHICLE |
FR2779216A1 (en) | 1998-05-28 | 1999-12-03 | Valeo Climatisation | VEHICLE AIR CONDITIONING DEVICE USING A SUPERCRITICAL REFRIGERANT FLUID |
EP0960756A1 (en) | 1998-05-28 | 1999-12-01 | Valeo Climatisation | Air conditionning device using a refrigerant fluid in a supercritical state |
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US6178761B1 (en) | 1998-05-28 | 2001-01-30 | Valeo Climatisation | Air conditioning circuit using a refrigerant fluid in the supercritical state, in particular for a vehicle |
US6679320B2 (en) | 1998-05-28 | 2004-01-20 | Valeo Climatisation | Vehicle air conditioning circuit using a refrigerant fluid in the supercritical state |
DE19829335A1 (en) * | 1998-07-01 | 2000-02-03 | Kki Klima-, Kaelte- Und Industrieanlagen Schmitt Kg | Refrigeration system has an intermediate heat exchanger between the condenser and refrigerant expansion unit to heat the refrigerant vapour |
DE19829335C2 (en) * | 1998-07-01 | 2000-06-08 | Kki Klima-, Kaelte- Und Industrieanlagen Schmitt Kg | Refrigeration system |
WO2000068621A1 (en) * | 1999-05-11 | 2000-11-16 | Zexel Valeo Climate Control Corporation | Method of controlling refrigerating cycle and refrigerating cycle using the method |
US6343486B1 (en) | 1999-06-08 | 2002-02-05 | Mitsubishi Heavy Industries, Ltd. | Supercritical vapor compression cycle |
WO2001006182A1 (en) * | 1999-07-16 | 2001-01-25 | Bosch Automotive Systems Corporation | Refrigerating cycle |
WO2001006183A1 (en) * | 1999-07-16 | 2001-01-25 | Zexel Valeo Climate Control Corporation | Refrigerating cycle |
FR2796595A1 (en) * | 1999-07-22 | 2001-01-26 | Valeo Climatisation | Relief valve for pressure control of car air-conditioning system has bulb filled with control fluid, and placed in trajectory of air flow for controlling valve as function of pressure of control fluid |
WO2001027543A1 (en) * | 1999-10-08 | 2001-04-19 | Zexel Valeo Climate Control Corporation | Refrigerating cycle |
US7131291B2 (en) * | 2001-09-03 | 2006-11-07 | Sinvent As | Compression system for cooling and heating purposes |
EP1329677A3 (en) * | 2002-01-22 | 2003-12-17 | Carrier Corporation | Transcritical vapor compression system |
EP1329677A2 (en) | 2002-01-22 | 2003-07-23 | Carrier Corporation | Transcritical vapor compression system |
US7302807B2 (en) | 2002-03-28 | 2007-12-04 | Matsushita Electric Industrial Co., Ltd. | Refrigerating cycle device |
US6895769B2 (en) | 2003-02-03 | 2005-05-24 | Calsonic Kansei Corporation | Air conditioning apparatus using supercritical refrigerant for vehicle |
EP1582826A1 (en) * | 2004-03-29 | 2005-10-05 | Andreas Bangheri | Heat pump and method for cyclic vapour compression |
US7607315B2 (en) | 2004-06-09 | 2009-10-27 | Denso Corporation | Pressure control valve and vapor-compression refrigerant cycle system using the same |
DE102005028405B4 (en) * | 2004-06-23 | 2019-08-29 | Denso Corporation | Supercritical heat pump circuit system |
US7559206B2 (en) | 2004-06-23 | 2009-07-14 | Denso Corporation | Supercritical heat pump cycle system |
US8186171B2 (en) | 2005-02-18 | 2012-05-29 | Carrier Corporation | Method for controlling high-pressure in an intermittently supercritically operating refrigeration circuit |
EP2273214A3 (en) * | 2005-02-18 | 2011-11-02 | Carrier Corporation | Method for controlling high-pressure in an intermittently supercritically operating refrigeration circuit |
WO2006087005A1 (en) * | 2005-02-18 | 2006-08-24 | Carrier Corporation | Method for controlling high-pressure in an intermittently supercritically operating refrigeration circuit |
EP2068098A4 (en) * | 2006-09-11 | 2012-10-31 | Daikin Ind Ltd | Air conditioner |
EP2068098A1 (en) * | 2006-09-11 | 2009-06-10 | Daikin Industries, Ltd. | Air conditioner |
US8157538B2 (en) | 2007-07-23 | 2012-04-17 | Emerson Climate Technologies, Inc. | Capacity modulation system for compressor and method |
US8807961B2 (en) | 2007-07-23 | 2014-08-19 | Emerson Climate Technologies, Inc. | Capacity modulation system for compressor and method |
US8308455B2 (en) | 2009-01-27 | 2012-11-13 | Emerson Climate Technologies, Inc. | Unloader system and method for a compressor |
US10378533B2 (en) | 2011-12-06 | 2019-08-13 | Bitzer Us, Inc. | Control for compressor unloading system |
CN112432376A (en) * | 2020-11-24 | 2021-03-02 | 同济大学 | Carbon dioxide refrigerating and freezing system and intelligent switching-mixing control method |
Also Published As
Publication number | Publication date |
---|---|
AU8530191A (en) | 1993-04-27 |
RU94030805A (en) | 1997-04-20 |
ATE137009T1 (en) | 1996-05-15 |
AU669473B2 (en) | 1996-06-13 |
CA2119015A1 (en) | 1993-04-01 |
JPH06510111A (en) | 1994-11-10 |
KR100245958B1 (en) | 2000-04-01 |
EP0604417A1 (en) | 1994-07-06 |
NO180603C (en) | 1997-05-14 |
RU2088865C1 (en) | 1997-08-27 |
NO180603B (en) | 1997-02-03 |
DK0604417T3 (en) | 1996-08-26 |
JP2931668B2 (en) | 1999-08-09 |
CA2119015C (en) | 2002-07-09 |
DE69118924D1 (en) | 1996-05-23 |
NO940936L (en) | 1994-03-16 |
ES2088502T3 (en) | 1996-08-16 |
EP0604417B1 (en) | 1996-04-17 |
DE69118924T2 (en) | 1996-11-21 |
BR9107318A (en) | 1995-11-07 |
NO940936D0 (en) | 1994-03-16 |
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