EP0876576A1 - Kompressionskälteanlage - Google Patents
KompressionskälteanlageInfo
- Publication number
- EP0876576A1 EP0876576A1 EP96900877A EP96900877A EP0876576A1 EP 0876576 A1 EP0876576 A1 EP 0876576A1 EP 96900877 A EP96900877 A EP 96900877A EP 96900877 A EP96900877 A EP 96900877A EP 0876576 A1 EP0876576 A1 EP 0876576A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- refrigerant
- filling
- degree
- compressor
- heat exchanger
- 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.)
- Granted
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
- 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
- F25B2600/00—Control issues
- F25B2600/17—Control issues by controlling the pressure of the condenser
Definitions
- the invention relates to a compression refrigeration system with a compressor, a gas cooler, an expansion device and an evaporator, which are connected to one another in a circuit in which a refrigerant is contained.
- Such a compression cold system is known for example from WO 90/07683.
- This known system is designed as a transcritical system, i.e. it is transcritical.
- Carbon dioxide is used as the refrigerant.
- a compression cold system of the type mentioned is also known from WO 94/14016. This well-known system also works transcritically with carbon dioxide as the refrigerant.
- the high-pressure refrigerant pressure is set precisely within relatively narrow limits. This is according to the above mentioned WO 94/14016 97/27437 PC77DE96 / 00140
- the degree of filling of the refrigerant which is defined as the quotient of refrigerant charge to the total volume of the system, in the system to a value between 0.55 and 0.70 kg / ltr. preferably to 0.60 kg / ltr. is set.
- Carbon dioxide as refrigerant is 466 gr / ltr., I.e.
- the degree of filling of the refrigerant is between 120 and 150%, preferably around 130%, of the critical density.
- the known transcritical system according to WO 94/14016 results in a maximum of the cooling capacity.
- the store there also serves to absorb excess carbon dioxide when a certain resting pressure is exceeded on the low-pressure side of the system, for. B. at a standstill in a hot environment.
- the static pressure at a filling level f 0.60 kg / ltr. at e.g. 60 ° C, i.e. for a vehicle standing in the sunshine or a hot engine compartment, 155 bar.
- the invention has for its object to provide a compression refrigeration system of the type mentioned, which is comparatively simple and which can be used in a relatively large outside temperature range without problems
- Cooling capacity of the system is significantly affected.
- This object is achieved according to the invention in a compression refrigeration system of the type mentioned at the outset in that the degree of filling of the refrigerant is between 50 and 100% of the critical density of the refrigerant.
- Carbon dioxide is preferably used as the refrigerant. Carbon dioxide is advantageously available as waste in industrial production and is therefore very inexpensive. As such, carbon dioxide has been known as a refrigerant since the turn of the 19th and 20th centuries.
- the degree of filling of the carbon dioxide refrigerant is preferably between 0.25 and 0.45 kg of carbon dioxide / liter. Total volume of the cycle plant.
- the degree of filling is actually constant in the system according to the invention.
- the degree of filling can be adjustable depending on the average outside temperature of the climatic region in which the system according to the invention is used. This means that the degree of filling can be selected to be greater with increasing outside or ambient temperature.
- the compression refrigeration system according to the invention is preferably designed to be transcritical.
- Fig. 1 is a diagram of a first
- Fig. 2 shows a diagram of the relationship between the refrigeration coefficient and the
- Fig. 3 shows a functional relationship between the refrigerant filling level f and
- Circuit diagram representation of a second embodiment of the compression refrigeration system with an intermediate heat exchanger
- FIG. 1 shows in a circuit diagram representation schematically an embodiment of the compression cold system 10 with a compressor 12, a gas cooler 14 or a condenser connected to the compressor 12, one with the
- Gas cooler 14 connected expansion device 16 and an evaporator 18.
- the compressor 12, the gas cooler 14, the expansion device 16 and the evaporator 18 are connected to one another in a circuit. Is in the cycle contain a refrigerant, which is preferably carbon dioxide.
- FIG. 2 illustrates the functional relationship between the cooling capacity figure € of the system 10 as a function of the high-pressure side pressure p on the compressor 12 or on the inlet side of the gas cooler 14 assigned to the compressor 12. This is shown in FIG. 1 by the arrow 20 in combination with the symbol p for indicated the said pressure. It can be seen from FIG. 2 that the coefficient of cooling £ has a maximum £ max at a certain pressure p Q. This is achieved by a certain refrigerant filling level f which, as has been explained above, according to WO 94/14016 between 0.55 and 0.70 kg / liter, preferably 0.60 kg / liter. is. However, FIG.
- the degree of filling f is selected to be significantly smaller than that described last above. This is illustrated by Figure 3, in which the filling level f to the gas cooler from Austrittstempertur t is illustrated.
- the gas cooler exit temperature, the measurement point in Fig. 1 by the arrow 21 in connection with the label T is made clear, is usually on the order of 5 to 15 K above the ambient temperature etc. and is dependent on the compressor speed.
- the degree of refrigerant filling f of the system 10 according to the invention see FIG.
- FIG. 3 also illustrates the filling degree range according to the compression cold system, as described in WO 94/14016 is disclosed. This last-mentioned degree of filling range is indicated as a cross-hatched area 24. It can be seen that the two filling degree ranges 22, 24 have no common ground.
- FIG. 3 also illustrates the line 26
- FIG. 4 shows a schematic circuit diagram of a compression refrigeration system 10 with a compressor 12, a gas cooler 14 connected to the compressor, an intermediate heat exchanger 28, an expansion device 16 and an evaporator 18.
- the intermediate heat exchanger 28 has a first heat exchanger branch 30 and a second heat exchanger branch 32 that are thermally coupled to each other.
- the first heat exchanger strand 30 is connected between the gas cooler 14 and the expansion device 16.
- the second heat exchanger strand 32 is connected between the evaporator 18 and the compressor 12.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Air-Conditioning For Vehicles (AREA)
- Separation By Low-Temperature Treatments (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/DE1996/000140 WO1997027437A1 (de) | 1996-01-26 | 1996-01-26 | Kompressionskälteanlage |
CN96199783.4A CN1113205C (zh) | 1996-01-26 | 1996-01-26 | 压缩制冷装置 |
US09/119,484 US6085544A (en) | 1996-01-26 | 1998-07-20 | Compression refrigeration unit |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0876576A1 true EP0876576A1 (de) | 1998-11-11 |
EP0876576B1 EP0876576B1 (de) | 2000-04-05 |
Family
ID=27179115
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96900877A Expired - Lifetime EP0876576B1 (de) | 1996-01-26 | 1996-01-26 | Kompressionskälteanlage |
Country Status (9)
Country | Link |
---|---|
US (1) | US6085544A (de) |
EP (1) | EP0876576B1 (de) |
JP (1) | JP3665346B2 (de) |
CN (1) | CN1113205C (de) |
AU (1) | AU4482496A (de) |
BR (1) | BR9612461A (de) |
DE (2) | DE19681212D2 (de) |
ES (1) | ES2144722T3 (de) |
WO (1) | WO1997027437A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014214656A1 (de) | 2014-07-25 | 2016-01-28 | Konvekta Ag | Kompressionskälteanlage und Verfahren zum Betrieb einer Kompressionskälteanlage |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3262110B2 (ja) | 1999-10-26 | 2002-03-04 | 松下電器産業株式会社 | コンプレッサおよびそれを用いた冷媒システム装置 |
CN1492986A (zh) | 2001-02-21 | 2004-04-28 | 松下电器产业株式会社 | 冷冻循环装置 |
JPWO2003004948A1 (ja) * | 2001-07-02 | 2004-10-28 | 三洋電機株式会社 | ヒートポンプ装置 |
NO20014258D0 (no) * | 2001-09-03 | 2001-09-03 | Sinvent As | System for kjöle- og oppvarmingsformål |
DE10161254A1 (de) | 2001-12-13 | 2003-07-03 | Konvekta Ag | Klimatisierungseinrichtung für ein Fahrzeug |
US6631617B1 (en) | 2002-06-27 | 2003-10-14 | Tecumseh Products Company | Two stage hermetic carbon dioxide compressor |
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 |
US7024883B2 (en) * | 2003-12-19 | 2006-04-11 | Carrier Corporation | Vapor compression systems using an accumulator to prevent over-pressurization |
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 |
NL1026728C2 (nl) | 2004-07-26 | 2006-01-31 | Antonie Bonte | Verbetering van koelsystemen. |
WO2006097229A1 (de) * | 2005-03-15 | 2006-09-21 | Behr Gmbh & Co. Kg | Kälte-kreislauf |
US20060260657A1 (en) * | 2005-05-18 | 2006-11-23 | Jibb Richard J | System and apparatus for supplying carbon dioxide to a semiconductor application |
CN101228400B (zh) * | 2005-07-28 | 2010-05-12 | 天津大学 | 制冷设备 |
CN101688695B (zh) * | 2007-04-23 | 2014-07-23 | 开利公司 | 带增强器回路的co2制冷剂系统 |
NO327832B1 (no) | 2007-06-29 | 2009-10-05 | Sinvent As | Dampkompresjons-kjolesystem med lukket krets samt fremgangsmate for drift av systemet. |
US9989280B2 (en) * | 2008-05-02 | 2018-06-05 | Heatcraft Refrigeration Products Llc | Cascade cooling system with intercycle cooling or additional vapor condensation cycle |
JP2011521195A (ja) * | 2008-05-14 | 2011-07-21 | キャリア コーポレイション | 輸送冷凍システムおよび運転方法 |
DE102010001929B4 (de) | 2010-02-15 | 2014-06-18 | Konvekta Ag | Kälteanlage zur Kühlung eines umschlossenen Raumes |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US63413A (en) * | 1867-04-02 | Improved mode of manufacturing ioe | ||
NO890076D0 (no) * | 1989-01-09 | 1989-01-09 | Sinvent As | Luftkondisjonering. |
NO175830C (no) * | 1992-12-11 | 1994-12-14 | Sinvent As | Kompresjonskjölesystem |
-
1996
- 1996-01-26 WO PCT/DE1996/000140 patent/WO1997027437A1/de active IP Right Grant
- 1996-01-26 ES ES96900877T patent/ES2144722T3/es not_active Expired - Lifetime
- 1996-01-26 DE DE19681212T patent/DE19681212D2/de not_active Ceased
- 1996-01-26 AU AU44824/96A patent/AU4482496A/en not_active Abandoned
- 1996-01-26 CN CN96199783.4A patent/CN1113205C/zh not_active Expired - Lifetime
- 1996-01-26 EP EP96900877A patent/EP0876576B1/de not_active Expired - Lifetime
- 1996-01-26 JP JP52639397A patent/JP3665346B2/ja not_active Expired - Fee Related
- 1996-01-26 DE DE59604923T patent/DE59604923D1/de not_active Expired - Lifetime
- 1996-01-26 BR BR9612461A patent/BR9612461A/pt not_active IP Right Cessation
-
1998
- 1998-07-20 US US09/119,484 patent/US6085544A/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO9727437A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014214656A1 (de) | 2014-07-25 | 2016-01-28 | Konvekta Ag | Kompressionskälteanlage und Verfahren zum Betrieb einer Kompressionskälteanlage |
Also Published As
Publication number | Publication date |
---|---|
WO1997027437A1 (de) | 1997-07-31 |
BR9612461A (pt) | 1999-07-13 |
AU4482496A (en) | 1997-08-20 |
EP0876576B1 (de) | 2000-04-05 |
JP3665346B2 (ja) | 2005-06-29 |
CN1113205C (zh) | 2003-07-02 |
JP2000515958A (ja) | 2000-11-28 |
DE59604923D1 (de) | 2000-05-11 |
CN1207803A (zh) | 1999-02-10 |
DE19681212D2 (de) | 1999-03-11 |
US6085544A (en) | 2000-07-11 |
ES2144722T3 (es) | 2000-06-16 |
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