WO2004109198A1 - 冷凍サイクル - Google Patents
冷凍サイクル Download PDFInfo
- Publication number
- WO2004109198A1 WO2004109198A1 PCT/JP2004/002329 JP2004002329W WO2004109198A1 WO 2004109198 A1 WO2004109198 A1 WO 2004109198A1 JP 2004002329 W JP2004002329 W JP 2004002329W WO 2004109198 A1 WO2004109198 A1 WO 2004109198A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- refrigerant
- degree
- refrigeration cycle
- hfc
- superheat
- 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
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
-
- 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
-
- 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
- F25B2341/068—Expansion valves combined with a sensor
- F25B2341/0683—Expansion valves combined with a sensor the sensor is disposed in the suction line and influenced by the temperature or the pressure of the suction gas
-
- 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
- F25B2500/00—Problems to be solved
- F25B2500/15—Hunting, i.e. oscillation of controlled refrigeration variables reaching undesirable values
-
- 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
- F25B40/00—Subcoolers, desuperheaters or superheaters
- F25B40/02—Subcoolers
Definitions
- the present invention relates to a refrigeration cycle, and more particularly to a refrigeration cycle using HFC-152a as a refrigerant.
- a refrigeration cycle of an automotive air conditioning system includes a compressor driven by an engine, a condenser that condenses the refrigerant compressed by the compressor, and a receiver that separates the condensed refrigerant into gas and liquid.
- the expansion device includes an expansion device that throttles and expands the separated liquid refrigerant, and an evaporator that evaporates the expanded refrigerant and returns the refrigerant to the compressor.
- HFC-134a an alternative chlorofluorocarbon, HFC-134a, is generally used as a refrigerant.
- FIG. 8 is a diagram showing characteristics of a refrigeration cycle using HFC-134a refrigerant.
- the change of the supercooling degree SC, the superheat degree SH and the flow rate Gf with respect to the time change when HFC-134a is used as the refrigerant is shown.
- the superheat degree SH and the flow rate Gf are small even when the supercooling degree SC is as small as about 1 degree. It can be seen that the hunting of the system is small and almost stable.
- HFC-134a is used as a refrigerant in the refrigeration cycle, global warming Because of the large influence of HFC-134a, refrigerants are being studied to replace HFC-134a.
- HFC-152a One such refrigerant, HFC-152a, whose impact on global warming is about one-tenth that of HFC-134a, is being studied.
- FIG. 9 is a diagram showing characteristics of a refrigeration cycle using HFC-152a refrigerant.
- This figure shows the case where HFC-152a is used as the refrigerant, the refrigerant charging amount is 500 g, and the expansion valve is set to 0.177 MPa when the expansion valve is used as the expansion device.
- the superheat degree SH is about 2 degrees and the supercooling degree SC is stable at about 1 degree, and it can be seen that hunting tends to be small in a region where the superheat degree SH is small.
- the superheat SH is as small as about 2 degrees, the efficiency of the compressor is low. Therefore, it is preferable that the superheat SH reaches about 10 degrees.
- the present invention has been made in view of such a point, and an object of the present invention is to provide a refrigeration cycle that can operate stably without hunting of the superheat degree SH.
- a refrigeration cycle including a compressor, a condenser, an expansion device, and an evaporator, and using HFC-152a as a circulating refrigerant
- the refrigerant at an inlet of the expansion device is always By providing a state in which a predetermined degree of subcooling is ensured, fluctuations in the degree of superheat of the refrigerant at the outlet of the evaporator are suppressed and stabilized, and a refrigeration cycle is provided.
- FIG. 1 is a diagram showing characteristics of a refrigeration cycle using HFC-152a refrigerant.
- FIG. 2 is a diagram showing flow characteristics of the HFC-152a refrigerant.
- FIG. 3 is a diagram showing a part of a Mollier diagram.
- FIG. 4 is a diagram showing a method for improving the degree of superheat.
- FIG. 5 is a system diagram showing a refrigeration cycle using a liquid receiver.
- Figure 6 is a system diagram showing a refrigeration cycle using a supercooled condenser.
- FIG. 7 is a system diagram showing a refrigeration cycle using an accumulator.
- FIG. 8 is a diagram showing characteristics of a refrigeration cycle using HFC-134a refrigerant.
- FIG. 9 is a diagram showing characteristics of a refrigeration cycle using HFC-152a refrigerant.
- FIG. 1 is a diagram showing characteristics of a refrigeration cycle using HFC-152a refrigerant
- FIG. 2 is a diagram showing flow characteristics of HFC-152a refrigerant
- FIG. 3 is a diagram showing a part of a Mollier diagram.
- HFC-152a was used as the refrigerant, and the supercooling degree SC, superheat degree SH, and flow rate Gf when using an expansion valve with a set value of 0.186 MPa as the expansion device were used. The time change is shown.
- the degree of superheat SH is 3 degrees or more. At that time, the fluctuation range is large and it can be seen that hunting occurs. Therefore, increasing the refrigerant charge to 600 g or 650 g in order to obtain the supercooling degree SC, the superheat degree SH fluctuates greatly in the region where the supercooling degree SC is only about 1-2 degrees. Although it was in an unstable state, it was found that when the supercooling degree SC was more than 5 degrees, the fluctuation of the superheat degree SH was small and stable.
- the supercooling degree SC is preferably 5 ° or more.
- the dashed line indicates the saturated liquid line of the conventional HFC-134a
- the solid line indicates the saturated liquid line of HFC-152a.
- HFC-134 & does not enter the gas-liquid phase unless there is a pressure change of about 0.18 MPa
- HFC-152a does not enter the gas-liquid phase with a pressure change of about 0.13 MPa.
- the supercooling degree SC of 5 degrees or more is always generated, and thereby, the fluctuation of the superheat degree SH is suppressed.
- the system will be stable.
- the superheat SH is stable without hunting. It appears only about degrees.
- the angle is about 10 degrees.
- FIG. 4 is a diagram showing a method for improving the degree of superheat.
- the degree of superheat SH is improved by lowering the set value of the expansion valve.
- the superheat degree SH is increased by setting the refrigerant charge to 650 g and reducing the set value of the expansion valve from 0.186MPa to 0.167MPa and 0.147MPa. I understand. In addition, even if the superheat SH rises, it can be seen that it is stable without hunting.
- FIG. 5 is a system diagram showing a refrigeration cycle using a liquid receiver.
- This refrigeration cycle is configured such that a refrigerant of HFC-152a circulates through a compressor 1, a condenser 2, a liquid receiver 3, a thermal expansion valve 4, and an evaporator 5.
- the compressor 1 uses the engine as a drive source to compress the refrigerant.
- the high-temperature and high-pressure refrigerant compressed by the compressor 1 is condensed in the condenser 2 to become a high-temperature and high-pressure liquid refrigerant.
- This liquid refrigerant is separated into gas and liquid in the liquid receiver 3, and the separated liquid refrigerant is throttled and expanded by the temperature type expansion valve 4 to become a low-temperature, low-pressure mist-like refrigerant.
- the refrigerant flowing out of the temperature type expansion valve 4 is evaporated and vaporized in the evaporator 5.
- the vaporized refrigerant is returned to the compressor 1 through a portion of the temperature type expansion valve 4 where the refrigerant temperature and pressure are sensed.
- the temperature type expansion valve 4 detects the refrigerant temperature at the outlet of the evaporator 5 and detects the pressure of the refrigerant to be sent out to the evaporator 5 so that the refrigerant at the outlet of the evaporator 5 has a predetermined degree of superheat SH. Control the flow rate.
- FIG. 6 is a system diagram showing a refrigeration cycle using a supercooled condenser.
- This refrigeration cycle is configured such that a refrigerant of HFC-152a circulates through a compressor 1, a subcooling condenser 6, a temperature type expansion valve 4, and an evaporator 5.
- the supercooling condenser 6 is a condenser having a function of a liquid receiver, and the cooling medium sent from the compressor 1 is cooled and completely liquefied, and the liquefied cooling medium is further cooled and cooled by temperature. It is sent to the expansion valve 4. Therefore, since the refrigerant that has flowed out of the supercooled condenser 6 already has the predetermined degree of supercooling SC, the supercooled condenser 6 can reliably ensure the degree of supercooling SC.
- FIG. 7 is a system diagram showing a refrigeration cycle using an accumulator.
- This refrigeration cycle is configured such that HFC-152a refrigerant circulates through a compressor 1, a condenser 2, an orifice tube 7, an evaporator 5, and an accumulator 8. Also in this refrigeration cycle, hunting of the superheat degree SH of the refrigerant at the outlet of the evaporator 5 can be suppressed by overfilling the refrigerant.
- the present invention provides a refrigeration cycle using HFC-152a, which is a refrigerant having a smaller saturated liquid line slope than HFC-134a, and easily enters the gas-liquid phase region with a small pressure change.
- the cold soot at the inlet of the expansion device is always in a supercooled state.
- the degree of supercooling SC was kept at least 5 degrees so that it did not become 0 even if the pressure fluctuated.
- the superheat SH The refrigeration cycle using HFC-152a as the refrigerant is not hunting, but if the supercooling degree SC is not generated, the hunting of the superheat degree SH tends to occur.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04714957A EP1630491A1 (en) | 2003-06-02 | 2004-02-26 | Refrigeration cycle |
US11/207,720 US20050274140A1 (en) | 2003-06-02 | 2005-08-22 | Refrigeration cycle |
US11/510,724 US20060288732A1 (en) | 2003-06-02 | 2006-08-28 | Refrigeration cycle |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003-156609 | 2003-06-02 | ||
JP2003156609A JP2004360936A (ja) | 2003-06-02 | 2003-06-02 | 冷凍サイクル |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/207,720 Continuation US20050274140A1 (en) | 2003-06-02 | 2005-08-22 | Refrigeration cycle |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004109198A1 true WO2004109198A1 (ja) | 2004-12-16 |
Family
ID=33508324
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/002329 WO2004109198A1 (ja) | 2003-06-02 | 2004-02-26 | 冷凍サイクル |
Country Status (5)
Country | Link |
---|---|
US (2) | US20050274140A1 (ja) |
EP (1) | EP1630491A1 (ja) |
JP (1) | JP2004360936A (ja) |
CN (1) | CN1751212A (ja) |
WO (1) | WO2004109198A1 (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4062129B2 (ja) * | 2003-03-05 | 2008-03-19 | 株式会社デンソー | 蒸気圧縮式冷凍機 |
CN100529598C (zh) * | 2004-07-09 | 2009-08-19 | 谷俊杰 | 制冷系统 |
WO2009046740A1 (en) * | 2007-10-10 | 2009-04-16 | Carrier Corporation | Refrigerating system and method for controlling the same |
JP6073653B2 (ja) * | 2012-11-09 | 2017-02-01 | サンデンホールディングス株式会社 | 車両用空気調和装置 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0373866U (ja) * | 1989-11-24 | 1991-07-25 | ||
JPH0835745A (ja) * | 1994-07-27 | 1996-02-06 | Fuji Koki Seisakusho:Kk | 温度膨張弁 |
JPH11108511A (ja) * | 1997-10-08 | 1999-04-23 | Hitachi Ltd | 冷媒封入量判定装置付き空気調和機及び冷媒封入量判定方法 |
JP2002327969A (ja) * | 2001-04-26 | 2002-11-15 | Mitsubishi Heavy Ind Ltd | 冷凍装置 |
JP2003050061A (ja) * | 2001-08-06 | 2003-02-21 | Mitsubishi Electric Corp | 空気調和装置 |
Family Cites Families (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5079929A (en) * | 1979-07-31 | 1992-01-14 | Alsenz Richard H | Multi-stage refrigeration apparatus and method |
US4773234A (en) * | 1987-08-17 | 1988-09-27 | Kann Douglas C | Power saving refrigeration system |
US5262077A (en) * | 1990-04-25 | 1993-11-16 | E. I. Du Pont De Nemours And Company | Halocarbon blends |
JP2967574B2 (ja) * | 1990-11-16 | 1999-10-25 | 株式会社日立製作所 | 冷凍装置 |
DE69206442T2 (de) * | 1991-02-18 | 1996-04-25 | Matsushita Electric Ind Co Ltd | Vorrichtung mit Kältemittelkreislauf. |
CA2044825C (en) * | 1991-06-18 | 2004-05-18 | Marc A. Paradis | Full-range, high efficiency liquid chiller |
US5174123A (en) * | 1991-08-23 | 1992-12-29 | Thermo King Corporation | Methods and apparatus for operating a refrigeration system |
EP0615538B1 (en) * | 1991-12-03 | 2001-03-07 | United States Environmental Protection Agency | Refrigerant compositions and processes for using same |
JP3244296B2 (ja) * | 1992-04-10 | 2002-01-07 | 三洋電機株式会社 | 冷媒組成物及びこれを使用した二元冷凍装置 |
US5287706A (en) * | 1992-12-16 | 1994-02-22 | Alea Williams | Refrigeration system and subcooling condenser therefor |
US5531080A (en) * | 1993-04-27 | 1996-07-02 | Mitsubishi Denki Kabushiki Kaisha | Refrigerant circulating system |
CN1079528C (zh) * | 1993-10-28 | 2002-02-20 | 株式会社日立制作所 | 制冷循环及其控制方法 |
JP3408309B2 (ja) * | 1994-02-10 | 2003-05-19 | 株式会社東芝 | 密閉形コンプレッサならびにこのコンプレッサを用いた冷凍装置 |
EP0770114B1 (fr) * | 1994-07-11 | 1998-11-11 | SOLVAY (Société Anonyme) | Refrigerants |
US5669232A (en) * | 1994-11-22 | 1997-09-23 | Sanyo Electric Co., Ltd. | Refrigerating unit |
US5927087A (en) * | 1994-11-29 | 1999-07-27 | Ishikawa; Atuyumi | Refrigerating cycle |
JPH08313120A (ja) * | 1995-05-15 | 1996-11-29 | Matsushita Electric Ind Co Ltd | 3成分混合冷媒充填装置および充填方法 |
US5627770A (en) * | 1995-12-11 | 1997-05-06 | Concept Technology, Inc | Superheat gage with plug-in data module |
TW568254U (en) * | 1997-01-06 | 2003-12-21 | Mitsubishi Electric Corp | Refrigerant circulating apparatus |
US6176102B1 (en) * | 1998-12-30 | 2001-01-23 | Praxair Technology, Inc. | Method for providing refrigeration |
GB9920951D0 (en) * | 1999-09-06 | 1999-11-10 | Ici Ltd | Apparatus and method for condensing liquid solvent |
KR100340275B1 (ko) * | 1999-11-02 | 2002-06-12 | 박호군 | 디플루오로메탄(HFC-32),펜타플루오로에탄(HFC-125)과1,1,1,2-테트라플루오로에탄(HFC-134a)을포함하는 냉매 혼합물 |
US6272869B1 (en) * | 2000-06-30 | 2001-08-14 | American Standard International Inc. | Multiple orifice expansion device |
US6463751B1 (en) * | 2000-11-09 | 2002-10-15 | Kevin Teller | AC system utilizing condensate water to precool hot gas |
US6662576B1 (en) * | 2002-09-23 | 2003-12-16 | Vai Holdings Llc | Refrigeration system with de-superheating bypass |
-
2003
- 2003-06-02 JP JP2003156609A patent/JP2004360936A/ja active Pending
-
2004
- 2004-02-26 CN CNA2004800043459A patent/CN1751212A/zh active Pending
- 2004-02-26 EP EP04714957A patent/EP1630491A1/en not_active Withdrawn
- 2004-02-26 WO PCT/JP2004/002329 patent/WO2004109198A1/ja active Application Filing
-
2005
- 2005-08-22 US US11/207,720 patent/US20050274140A1/en active Pending
-
2006
- 2006-08-28 US US11/510,724 patent/US20060288732A1/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0373866U (ja) * | 1989-11-24 | 1991-07-25 | ||
JPH0835745A (ja) * | 1994-07-27 | 1996-02-06 | Fuji Koki Seisakusho:Kk | 温度膨張弁 |
JPH11108511A (ja) * | 1997-10-08 | 1999-04-23 | Hitachi Ltd | 冷媒封入量判定装置付き空気調和機及び冷媒封入量判定方法 |
JP2002327969A (ja) * | 2001-04-26 | 2002-11-15 | Mitsubishi Heavy Ind Ltd | 冷凍装置 |
JP2003050061A (ja) * | 2001-08-06 | 2003-02-21 | Mitsubishi Electric Corp | 空気調和装置 |
Also Published As
Publication number | Publication date |
---|---|
US20060288732A1 (en) | 2006-12-28 |
EP1630491A1 (en) | 2006-03-01 |
CN1751212A (zh) | 2006-03-22 |
JP2004360936A (ja) | 2004-12-24 |
US20050274140A1 (en) | 2005-12-15 |
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