DK1409936T3 - Defrosting of cascade cooling systems using CO2 hot gas - Google Patents

Defrosting of cascade cooling systems using CO2 hot gas

Info

Publication number
DK1409936T3
DK1409936T3 DK02747250T DK02747250T DK1409936T3 DK 1409936 T3 DK1409936 T3 DK 1409936T3 DK 02747250 T DK02747250 T DK 02747250T DK 02747250 T DK02747250 T DK 02747250T DK 1409936 T3 DK1409936 T3 DK 1409936T3
Authority
DK
Denmark
Prior art keywords
defrosting
compressor
respect
freezer
hot gas
Prior art date
Application number
DK02747250T
Other languages
Danish (da)
Inventor
Per Skaerbaek Nielsen
Thomas Lund
Original Assignee
York Refrigeration Aps
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 York Refrigeration Aps filed Critical York Refrigeration Aps
Application granted granted Critical
Publication of DK1409936T3 publication Critical patent/DK1409936T3/en

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
    • F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
    • F25B47/02—Defrosting cycles
    • F25B47/022—Defrosting cycles hot gas defrosting
    • 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
    • F25B7/00—Compression machines, plants or systems, with cascade operation, i.e. with two or more circuits, the heat from the condenser of one circuit being absorbed by the evaporator of the next circuit
    • 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
    • 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
    • F25B2347/00—Details for preventing or removing deposits or corrosion
    • F25B2347/02—Details of defrosting cycles
    • F25B2347/023—Set point defrosting
    • 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
    • F25B2400/07—Details of compressors or related parts
    • F25B2400/075—Details of compressors or related parts with parallel compressors
    • 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
    • F25B2400/22—Refrigeration systems for supermarkets
    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D31/00—Other cooling or freezing apparatus
    • F25D31/001—Plate freezers

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Defrosting Systems (AREA)
  • Fertilizers (AREA)

Abstract

In cascade refrigeration systems using CO2 as effective refrigerant in a highly advantageous manner there are severe problems with respect to defrosting in freezer equipments calling for operative defrosting, e.g. in plate freezer units in fishing vessels. The invention provides for a long row of advantages in this respect in arranging for the use of a dedicated defrost compressor operable to selectively furnish heated CO2 gas from the discharge side of the refrigeration compressor to the freezer units. This particular compressor can be of a simple and inexpensive type, and from a control point of view all that is needed is to arrange for well known automatic adjustment of the discharge capacity of the compressor to preset temperature/pressure value as may be desirable for different defrosting jobs.
DK02747250T 2001-06-13 2002-06-11 Defrosting of cascade cooling systems using CO2 hot gas DK1409936T3 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DKPA200100921 2001-06-13
DKPA200101068 2001-07-06
PCT/DK2002/000391 WO2002101305A1 (en) 2001-06-13 2002-06-11 Co2 hot gas defrosting of cascade refrigeration plants

Publications (1)

Publication Number Publication Date
DK1409936T3 true DK1409936T3 (en) 2007-04-23

Family

ID=26069034

Family Applications (1)

Application Number Title Priority Date Filing Date
DK02747250T DK1409936T3 (en) 2001-06-13 2002-06-11 Defrosting of cascade cooling systems using CO2 hot gas

Country Status (5)

Country Link
EP (1) EP1409936B1 (en)
AT (1) ATE348301T1 (en)
DE (1) DE60216764T2 (en)
DK (1) DK1409936T3 (en)
WO (1) WO2002101305A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1422487A3 (en) * 2002-11-21 2008-02-13 York Refrigeration APS Hot gas defrosting of refrigeration plants
DE10332859A1 (en) * 2003-07-18 2005-02-10 Linde Kältetechnik GmbH & Co. KG Hot gas defrosting for refrigeration systems
EP1775531A1 (en) * 2005-10-12 2007-04-18 GTI Koudetechnik B.V. Apparatus and system for cooling and/or freezing and defrosting
WO2008112568A2 (en) * 2007-03-09 2008-09-18 Johnson Controls Technology Company Compressor with multiple inlets

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3766745A (en) * 1970-03-16 1973-10-23 L Quick Refrigeration system with plural evaporator means
US4184341A (en) * 1978-04-03 1980-01-22 Pet Incorporated Suction pressure control system
US4437317A (en) * 1982-02-26 1984-03-20 Tyler Refrigeration Corporation Head pressure maintenance for gas defrost
SE439831C (en) * 1984-03-21 1987-01-26 Olson Hans E E PROCEDURE AND DEVICE FOR DEFROSTING MULTIPLE EVENTS
JP3082560B2 (en) * 1994-03-09 2000-08-28 ダイキン工業株式会社 Dual cooling system
NO20005575D0 (en) * 2000-09-01 2000-11-03 Sinvent As Method and arrangement for defrosting cold / heat pump systems
DK174257B1 (en) * 2001-02-23 2002-10-21 Teknologisk Inst Installations and methods where CO2 is used as a refrigerant and as a working medium for defrosting

Also Published As

Publication number Publication date
WO2002101305A1 (en) 2002-12-19
EP1409936B1 (en) 2006-12-13
DE60216764D1 (en) 2007-01-25
DE60216764T2 (en) 2007-10-04
ATE348301T1 (en) 2007-01-15
EP1409936A1 (en) 2004-04-21

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