EP1422487A3 - Hot gas defrosting of refrigeration plants - Google Patents

Hot gas defrosting of refrigeration plants Download PDF

Info

Publication number
EP1422487A3
EP1422487A3 EP03026471A EP03026471A EP1422487A3 EP 1422487 A3 EP1422487 A3 EP 1422487A3 EP 03026471 A EP03026471 A EP 03026471A EP 03026471 A EP03026471 A EP 03026471A EP 1422487 A3 EP1422487 A3 EP 1422487A3
Authority
EP
European Patent Office
Prior art keywords
compressor
refrigerant
evaporator
defrosting
operating
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Withdrawn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
EP03026471A
Other languages
German (de)
French (fr)
Other versions
EP1422487A2 (en
Inventor
Per Skaerbaek Nielsen
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.)
Johnson Controls Denmark ApS
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
Publication of EP1422487A2 publication Critical patent/EP1422487A2/en
Publication of EP1422487A3 publication Critical patent/EP1422487A3/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Withdrawn legal-status Critical Current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
    • 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
    • F25B1/00—Compression machines, plants or systems with non-reversible cycle
    • F25B1/10—Compression machines, plants or systems with non-reversible cycle with multi-stage compression
    • 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
    • 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
    • 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

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)

Abstract

In refrigeration systems using CO2 as effective refrigerant 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 refrigeration plant comprising at least one compressor unit (12), which compressor unit (12) is delivering compressed refrigerant to at least one condenser (14), from which condenser liquid refrigerant is led to at least one evaporator (8) through at least one restriction element, where the compressor is connected to the evaporator, and where a defroster circuit (56) is arranged for selectively supplying hot refrigerant to said evaporator equipment (8) for defrosting purposes, whereby at least one compressor unit (12) comprises at least a first compressor section (52) and a second compressor section (54), which first and second compressor sections (52,54) are operating in serial connection during defrost, where the first and second compressor sections (52,54) are operating in parallel during normal operation, where the pressure outlet of the second compressor section (54) during defrost is connected to a gas pipe connection (56) which is connected to a refrigerant channel system of said evaporator equipment (8).
EP03026471A 2002-11-21 2003-11-20 Hot gas defrosting of refrigeration plants Withdrawn EP1422487A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK200201801 2002-11-21
DKPA200201801 2002-11-21

Publications (2)

Publication Number Publication Date
EP1422487A2 EP1422487A2 (en) 2004-05-26
EP1422487A3 true EP1422487A3 (en) 2008-02-13

Family

ID=32187140

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03026471A Withdrawn EP1422487A3 (en) 2002-11-21 2003-11-20 Hot gas defrosting of refrigeration plants

Country Status (1)

Country Link
EP (1) EP1422487A3 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2886719B1 (en) * 2005-06-02 2007-08-10 Air Liquide METHOD FOR REFRIGERATING A THERMAL LOAD
EP1775531A1 (en) * 2005-10-12 2007-04-18 GTI Koudetechnik B.V. Apparatus and system for cooling and/or freezing and defrosting
CN101663546B (en) * 2007-03-09 2011-11-16 开利公司 Prevention of refrigerant solidification
US7900467B2 (en) * 2007-07-23 2011-03-08 Hussmann Corporation Combined receiver and heat exchanger for a secondary refrigerant
CN102865702A (en) * 2008-06-27 2013-01-09 开利公司 Hot gas defrost process
CN106705516B (en) * 2017-01-27 2023-04-28 广州市粤联水产制冷工程有限公司 Progressive liquid discharge device and hot gas defrosting system
FR3089603B1 (en) * 2018-12-06 2023-03-31 Beg Ingenierie Refrigeration plant
WO2024179931A1 (en) * 2023-03-01 2024-09-06 DSI Dantech A/S Method of operating a plate freezer

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3074249A (en) * 1960-06-15 1963-01-22 Ray M Henderson Refrigeration system and apparatus having a heating cycle and a cooling cycle
US3285500A (en) * 1964-05-25 1966-11-15 Borg Warner Combination single and dual stage compressor
JPS5485455A (en) * 1977-12-21 1979-07-07 Mitsubishi Electric Corp Refrigerating system
JPS6410066A (en) * 1987-06-30 1989-01-13 Toshiba Corp Air conditioner
US5600961A (en) * 1994-09-07 1997-02-11 General Electric Company Refrigeration system with dual cylinder compressor
EP1050726A2 (en) * 1999-05-05 2000-11-08 Linde Aktiengesellschaft Refrigeration system
JP2001056159A (en) * 1999-06-11 2001-02-27 Daikin Ind Ltd Air conditioner
WO2002101305A1 (en) * 2001-06-13 2002-12-19 York Refrigeration Aps Co2 hot gas defrosting of cascade refrigeration plants

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0213765A (en) 1988-06-30 1990-01-18 Toshiba Corp Refrigerating cycle system

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3074249A (en) * 1960-06-15 1963-01-22 Ray M Henderson Refrigeration system and apparatus having a heating cycle and a cooling cycle
US3285500A (en) * 1964-05-25 1966-11-15 Borg Warner Combination single and dual stage compressor
JPS5485455A (en) * 1977-12-21 1979-07-07 Mitsubishi Electric Corp Refrigerating system
JPS6410066A (en) * 1987-06-30 1989-01-13 Toshiba Corp Air conditioner
US5600961A (en) * 1994-09-07 1997-02-11 General Electric Company Refrigeration system with dual cylinder compressor
EP1050726A2 (en) * 1999-05-05 2000-11-08 Linde Aktiengesellschaft Refrigeration system
JP2001056159A (en) * 1999-06-11 2001-02-27 Daikin Ind Ltd Air conditioner
WO2002101305A1 (en) * 2001-06-13 2002-12-19 York Refrigeration Aps Co2 hot gas defrosting of cascade refrigeration plants

Also Published As

Publication number Publication date
EP1422487A2 (en) 2004-05-26

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