EP0208526A3 - Refrigeration method and apparatus - Google Patents

Refrigeration method and apparatus Download PDF

Info

Publication number
EP0208526A3
EP0208526A3 EP86305218A EP86305218A EP0208526A3 EP 0208526 A3 EP0208526 A3 EP 0208526A3 EP 86305218 A EP86305218 A EP 86305218A EP 86305218 A EP86305218 A EP 86305218A EP 0208526 A3 EP0208526 A3 EP 0208526A3
Authority
EP
European Patent Office
Prior art keywords
cooler
sub
expansion valve
liquid nitrogen
temperature
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.)
Withdrawn
Application number
EP86305218A
Other languages
German (de)
French (fr)
Other versions
EP0208526A2 (en
Inventor
Jeremy Paul Miller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BOC Group Ltd
Original Assignee
BOC Group Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by BOC Group Ltd filed Critical BOC Group Ltd
Publication of EP0208526A2 publication Critical patent/EP0208526A2/en
Publication of EP0208526A3 publication Critical patent/EP0208526A3/en
Withdrawn legal-status Critical Current

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
    • F25B25/00—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
  • Compressor (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

In a mechanical refrigeration apparatus of the vapour compression kind, comprising a compressor 2, condenser 4, expansion valve 6, and evaporator 8, a sub-cooler 12 is em­ ployed to reduce the temperature of the condensed re­ frigerant to a value at which at least 90% by volume and pre­ ferably all of it remains in the liquid phase on passage through the expansion valve 6. The sub-cooler 12 is cooled by means of a supply of liquid nitrogen from vessel 14. Alternatively, liquid nitrogen is evaporated in a circulating heat exchange atmosphere in the sub-cooler 12. Increased heat load in chamber 10 may thus be met without there necessarily being any increase in the evaporating temperature and pressure.
EP86305218A 1985-07-10 1986-07-07 Refrigeration method and apparatus Withdrawn EP0208526A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8517445A GB2177786B (en) 1985-07-10 1985-07-10 Refrigeration method and apparatus
GB8517445 1985-07-10

Publications (2)

Publication Number Publication Date
EP0208526A2 EP0208526A2 (en) 1987-01-14
EP0208526A3 true EP0208526A3 (en) 1989-10-04

Family

ID=10582080

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86305218A Withdrawn EP0208526A3 (en) 1985-07-10 1986-07-07 Refrigeration method and apparatus

Country Status (5)

Country Link
EP (1) EP0208526A3 (en)
JP (1) JPS6266063A (en)
AU (1) AU5989086A (en)
GB (1) GB2177786B (en)
ZA (1) ZA865039B (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69205546T2 (en) * 1991-11-20 1996-03-21 Air Prod & Chem Refrigeration device and refrigeration process.
NL1000899C2 (en) * 1994-12-09 1996-08-28 Kempen Koudetechniek B V Van Cooling system e.g. for refrigerated storage - uses under-cooled refrigerant whose pressure is held constant by regulating pump and valves irrespective of ambient temperature and pressure
US5660047A (en) * 1995-09-15 1997-08-26 American Air Liquide, Inc. Refrigeration system and method for cooling a susceptor using a refrigeration system
US5694776A (en) * 1996-01-30 1997-12-09 The Boc Group, Inc. Refrigeration method and apparatus
EP1012514A4 (en) * 1997-09-05 2005-06-08 Fisher & Paykel Appliances Ltd Refrigeration system with variable sub-cooling
JPH11248264A (en) 1998-03-04 1999-09-14 Hitachi Ltd Refrigerating machine
TW504546B (en) 2000-10-17 2002-10-01 Fisher & Amp Paykel Ltd A linear compressor
GB2371107A (en) * 2001-01-15 2002-07-17 Air Prod & Chem Freezing products
US6427112B1 (en) * 2001-01-26 2002-07-30 Visteon Global Technologies, Inc. Method of tuning a vehicle
US6438969B1 (en) 2001-07-12 2002-08-27 General Electric Company Cryogenic cooling refrigeration system for rotor having a high temperature super-conducting field winding and method
CN102393107B (en) * 2011-08-16 2013-07-03 北京航空航天大学 Negative-pressure liquid nitrogen subcooler and method for liquid nitrogen temperature reduction
US20150033771A1 (en) * 2013-08-02 2015-02-05 Emerald Environmental Technologies Modular refrigeration and heat reclamation chiller
CN113466286B (en) * 2021-06-30 2023-04-14 中国科学院西北生态环境资源研究院 Freeze-thaw test equipment for simulating concrete ultralow-temperature-large-temperature-difference freeze-thaw process

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3025439A1 (en) * 1979-07-13 1981-05-27 Tyler Refrigeration Corp., Niles, Mich. ENERGY-SAVING COOLING SYSTEM
US4285205A (en) * 1979-12-20 1981-08-25 Martin Leonard I Refrigerant sub-cooling
DE3322474A1 (en) * 1983-06-22 1985-01-17 Linde Ag, 6200 Wiesbaden Process for the operation of a refrigerant circuit and refrigerant circuit for carrying out the process

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3025439A1 (en) * 1979-07-13 1981-05-27 Tyler Refrigeration Corp., Niles, Mich. ENERGY-SAVING COOLING SYSTEM
US4285205A (en) * 1979-12-20 1981-08-25 Martin Leonard I Refrigerant sub-cooling
DE3322474A1 (en) * 1983-06-22 1985-01-17 Linde Ag, 6200 Wiesbaden Process for the operation of a refrigerant circuit and refrigerant circuit for carrying out the process

Also Published As

Publication number Publication date
GB8517445D0 (en) 1985-08-14
ZA865039B (en) 1987-02-25
GB2177786A (en) 1987-01-28
AU5989086A (en) 1987-01-15
JPS6266063A (en) 1987-03-25
EP0208526A2 (en) 1987-01-14
GB2177786B (en) 1989-11-08

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Inventor name: MILLER, JEREMY PAUL