EP1921399A3 - Two stage transcritical refrigeration system - Google Patents

Two stage transcritical refrigeration system Download PDF

Info

Publication number
EP1921399A3
EP1921399A3 EP07254445A EP07254445A EP1921399A3 EP 1921399 A3 EP1921399 A3 EP 1921399A3 EP 07254445 A EP07254445 A EP 07254445A EP 07254445 A EP07254445 A EP 07254445A EP 1921399 A3 EP1921399 A3 EP 1921399A3
Authority
EP
European Patent Office
Prior art keywords
refrigerant
refrigeration system
stage compressor
fluid communication
assembly
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Withdrawn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
EP07254445A
Other languages
German (de)
French (fr)
Other versions
EP1921399A2 (en
Inventor
Doron Shapiro
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.)
Hussmann Corp
Original Assignee
Hussmann Corp
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 Hussmann Corp filed Critical Hussmann Corp
Publication of EP1921399A2 publication Critical patent/EP1921399A2/en
Publication of EP1921399A3 publication Critical patent/EP1921399A3/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Withdrawn legal-status Critical Current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
    • 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
    • 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
    • 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
    • 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
    • F25B2400/04—Refrigeration circuit bypassing means
    • F25B2400/0401—Refrigeration circuit bypassing means for the compressor
    • 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
    • F25B2400/05—Compression system with heat exchange between particular parts of the system
    • F25B2400/054—Compression system with heat exchange between particular parts of the system between the suction tube of the compressor and another part of the 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
    • 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
    • F25B2400/06—Several compression cycles arranged in parallel
    • 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
    • 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
    • F25B2400/23—Separators
    • 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
    • F25B25/005—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00 using primary and secondary systems
    • 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
    • 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
    • F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • F25B43/006—Accumulators
    • 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
    • F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
    • F25B5/02—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in parallel

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)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

The invention provides a refrigeration system (100) including a plurality of refrigerated display cases (115). Each display case has a dedicated evaporator assembly (165) that cools return air by evaporating a refrigerant, and a first stage compressor assembly (120) that is in fluid communication with the respective evaporator assembly to compress the refrigerant to a first pressure corresponding to a first temperature of the refrigerant prior to discharge of the compressed refrigerant. The refrigeration system also includes a second stage compressor assembly (125) that is in fluid communication with the first stage compressor assemblies (120) to compress the refrigerant to a second pressure that is higher than the first pressure, and that corresponds to a second temperature of the refrigerant. The refrigeration system (100) further includes a heat exchanger (130) that is in fluid communication with the second stage compressor assembly (125) to receive the refrigerant from the second stage compressor assembly to reject heat from the refrigerant.
EP07254445A 2006-11-13 2007-11-13 Two stage transcritical refrigeration system Withdrawn EP1921399A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US85862406P 2006-11-13 2006-11-13

Publications (2)

Publication Number Publication Date
EP1921399A2 EP1921399A2 (en) 2008-05-14
EP1921399A3 true EP1921399A3 (en) 2010-03-10

Family

ID=39133833

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07254445A Withdrawn EP1921399A3 (en) 2006-11-13 2007-11-13 Two stage transcritical refrigeration system

Country Status (2)

Country Link
US (1) US20080289350A1 (en)
EP (1) EP1921399A3 (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITBO20080067A1 (en) * 2008-01-31 2009-08-01 Carpigiani Group Ali Spa MACHINE FOR THE PRODUCTION AND DISTRIBUTION OF LIQUID AND SEMILEQUID CONSUMPTION FOOD PRODUCTS.
US9151521B2 (en) * 2008-04-22 2015-10-06 Hill Phoenix, Inc. Free cooling cascade arrangement for refrigeration system
US8631666B2 (en) 2008-08-07 2014-01-21 Hill Phoenix, Inc. Modular CO2 refrigeration system
CA2820930C (en) * 2008-10-23 2016-04-26 Serge Dube Co2 refrigeration system
US8011191B2 (en) 2009-09-30 2011-09-06 Thermo Fisher Scientific (Asheville) Llc Refrigeration system having a variable speed compressor
DE102010035695A1 (en) * 2010-08-27 2012-03-01 Aht Cooling Systems Gmbh Refrigerated cabinets, in particular refrigerated shelves
US9541311B2 (en) 2010-11-17 2017-01-10 Hill Phoenix, Inc. Cascade refrigeration system with modular ammonia chiller units
US9664424B2 (en) 2010-11-17 2017-05-30 Hill Phoenix, Inc. Cascade refrigeration system with modular ammonia chiller units
US9657977B2 (en) 2010-11-17 2017-05-23 Hill Phoenix, Inc. Cascade refrigeration system with modular ammonia chiller units
US9689590B2 (en) * 2012-05-11 2017-06-27 Hill Phoenix, Inc. CO2 refrigeration system with integrated air conditioning module
CA2815783C (en) 2013-04-05 2014-11-18 Marc-Andre Lesmerises Co2 cooling system and method for operating same
US9528726B2 (en) 2014-03-14 2016-12-27 Hussmann Corporation Low charge hydrocarbon refrigeration system
US11656005B2 (en) 2015-04-29 2023-05-23 Gestion Marc-André Lesmerises Inc. CO2 cooling system and method for operating same
US10429101B2 (en) 2016-01-05 2019-10-01 Carrier Corporation Modular two phase loop distributed HVACandR system
AU2017439363B2 (en) * 2017-11-10 2022-02-03 Hussmann Corporation Subcritical CO2 refrigeration system using thermal storage
EP3737894B1 (en) * 2018-01-11 2023-04-05 Vilter Manufacturing LLC Dual cascade heat exchanger refrigeration system and related method of operation
IT202000002878A1 (en) * 2020-02-13 2021-08-13 Arneg TOGETHER EXHIBITOR AND PROCEDURE TO MAKE IT WORK.

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0126673A1 (en) * 1983-05-10 1984-11-28 Ets Bonnet Refrigeration plant with centralized cold production
US4947655A (en) * 1984-01-11 1990-08-14 Copeland Corporation Refrigeration system
EP0431797A2 (en) * 1989-11-22 1991-06-12 James C. Labrecque Refrigeration
US5522233A (en) * 1994-12-21 1996-06-04 Carrier Corporation Makeup oil system for first stage oil separation in booster system
WO2006022829A1 (en) * 2004-08-09 2006-03-02 Carrier Corporation Co2 refrigeration circuit with sub-cooling of the liquid refrigerant against the receiver flash gas and method for operating the same

Family Cites Families (52)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4151724A (en) * 1977-06-13 1979-05-01 Frick Company Pressurized refrigerant feed with recirculation for compound compression refrigeration systems
ATE249328T1 (en) * 1997-02-05 2003-09-15 Linde Ag METHOD AND DEVICE FOR COOLING EXTRUDED HOLLOW PROFILES
DE19815885A1 (en) * 1998-04-08 1999-10-14 Linde Ag Air separation method producing gas, or gas and liquid e.g. for steel plant
FR2779216B1 (en) * 1998-05-28 2000-08-04 Valeo Climatisation VEHICLE AIR CONDITIONING DEVICE USING A SUPERCRITICAL REFRIGERANT FLUID
US6112547A (en) * 1998-07-10 2000-09-05 Spauschus Associates, Inc. Reduced pressure carbon dioxide-based refrigeration system
JP3094996B2 (en) * 1998-09-30 2000-10-03 ダイキン工業株式会社 Binary refrigeration equipment
JP3085296B2 (en) * 1998-12-25 2000-09-04 ダイキン工業株式会社 Refrigeration equipment
JP3112003B2 (en) * 1998-12-25 2000-11-27 ダイキン工業株式会社 Refrigeration equipment
US6381972B1 (en) * 1999-02-18 2002-05-07 Hussmann Corporation Multiple zone refrigeration
US6467279B1 (en) * 1999-05-21 2002-10-22 Thomas J. Backman Liquid secondary cooling system
JP4392631B2 (en) * 1999-06-24 2010-01-06 株式会社ヴァレオサーマルシステムズ Variable capacity controller for refrigeration cycle
DE19935731A1 (en) * 1999-07-29 2001-02-15 Daimler Chrysler Ag Operating method for automobile refrigeration unit has cooling medium mass flow regulated by compressor and cooling medium pressure determined by expansion valve for regulation within safety limits
US6189329B1 (en) * 2000-04-04 2001-02-20 Venturedyne Limited Cascade refrigeration system
US6843065B2 (en) * 2000-05-30 2005-01-18 Icc-Polycold System Inc. Very low temperature refrigeration system with controlled cool down and warm up rates and long term heating capabilities
US6324856B1 (en) * 2000-07-07 2001-12-04 Spx Corporation Multiple stage cascade refrigeration system having temperature responsive flow control and method
JP2002048421A (en) * 2000-08-01 2002-02-15 Matsushita Electric Ind Co Ltd Refrigerating cycle system
JP2002130849A (en) * 2000-10-30 2002-05-09 Calsonic Kansei Corp Cooling cycle and its control method
US6457325B1 (en) * 2000-10-31 2002-10-01 Modine Manufacturing Company Refrigeration system with phase separation
US6385980B1 (en) * 2000-11-15 2002-05-14 Carrier Corporation High pressure regulation in economized vapor compression cycles
US6418735B1 (en) * 2000-11-15 2002-07-16 Carrier Corporation High pressure regulation in transcritical vapor compression cycles
WO2002046663A1 (en) * 2000-12-08 2002-06-13 Daikin Industries, Ltd. Refrigerator
US6871511B2 (en) * 2001-02-21 2005-03-29 Matsushita Electric Industrial Co., Ltd. Refrigeration-cycle equipment
US6608867B2 (en) * 2001-03-30 2003-08-19 Koninklijke Philips Electronics N.V. Detection and proper scaling of interlaced moving areas in MPEG-2 compressed video
US6629488B2 (en) * 2001-06-06 2003-10-07 Whitemoss, Inc. Method and apparatus for controlling axial device
DE10138255B4 (en) * 2001-08-03 2012-06-06 Gea Grasso Gmbh Arrangement of cascade refrigeration system
US6494054B1 (en) * 2001-08-16 2002-12-17 Praxair Technology, Inc. Multicomponent refrigeration fluid refrigeration system with auxiliary ammonia cascade circuit
US6817193B2 (en) * 2001-11-23 2004-11-16 Daimlerchrysler Ag Method for operating a refrigerant circuit, method for operating a motor vehicle driving engine, and refrigerant circuit
US6568199B1 (en) * 2002-01-22 2003-05-27 Carrier Corporation Method for optimizing coefficient of performance in a transcritical vapor compression system
US6698214B2 (en) * 2002-02-22 2004-03-02 Thar Technologies, Inc Method of refrigeration with enhanced cooling capacity and efficiency
US6698234B2 (en) * 2002-03-20 2004-03-02 Carrier Corporation Method for increasing efficiency of a vapor compression system by evaporator heating
US6557361B1 (en) * 2002-03-26 2003-05-06 Praxair Technology Inc. Method for operating a cascade refrigeration system
US6658888B2 (en) * 2002-04-10 2003-12-09 Carrier Corporation Method for increasing efficiency of a vapor compression system by compressor cooling
US6584802B1 (en) * 2002-04-16 2003-07-01 Monty J. Cofield Cooling apparatus employing carbon dioxide
US6647742B1 (en) * 2002-05-29 2003-11-18 Carrier Corporation Expander driven motor for auxiliary machinery
US6694763B2 (en) * 2002-05-30 2004-02-24 Praxair Technology, Inc. Method for operating a transcritical refrigeration system
JP3775358B2 (en) * 2002-07-12 2006-05-17 ダイキン工業株式会社 Refrigeration equipment
US6708511B2 (en) * 2002-08-13 2004-03-23 Delaware Capital Formation, Inc. Cooling device with subcooling system
TWI301188B (en) * 2002-08-30 2008-09-21 Sanyo Electric Co Refrigeant cycling device and compressor using the same
JP4242131B2 (en) * 2002-10-18 2009-03-18 パナソニック株式会社 Refrigeration cycle equipment
US6986262B2 (en) * 2002-11-28 2006-01-17 Sanyo Electric Co., Ltd. Binary refrigeration unit
US6739141B1 (en) * 2003-02-12 2004-05-25 Carrier Corporation Supercritical pressure regulation of vapor compression system by use of gas cooler fluid pumping device
JP4321095B2 (en) * 2003-04-09 2009-08-26 日立アプライアンス株式会社 Refrigeration cycle equipment
US6898941B2 (en) * 2003-06-16 2005-05-31 Carrier Corporation Supercritical pressure regulation of vapor compression system by regulation of expansion machine flowrate
US6968708B2 (en) * 2003-06-23 2005-11-29 Carrier Corporation Refrigeration system having variable speed fan
US7000413B2 (en) * 2003-06-26 2006-02-21 Carrier Corporation Control of refrigeration system to optimize coefficient of performance
US7028494B2 (en) * 2003-08-22 2006-04-18 Carrier Corporation Defrosting methodology for heat pump water heating system
US6923011B2 (en) * 2003-09-02 2005-08-02 Tecumseh Products Company Multi-stage vapor compression system with intermediate pressure vessel
US6813895B2 (en) * 2003-09-05 2004-11-09 Carrier Corporation Supercritical pressure regulation of vapor compression system by regulation of adaptive control
US6925821B2 (en) * 2003-12-02 2005-08-09 Carrier Corporation Method for extracting carbon dioxide for use as a refrigerant in a vapor compression system
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
US7010925B2 (en) * 2004-06-07 2006-03-14 Carrier Corporation Method of controlling a carbon dioxide heat pump water heating system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0126673A1 (en) * 1983-05-10 1984-11-28 Ets Bonnet Refrigeration plant with centralized cold production
US4947655A (en) * 1984-01-11 1990-08-14 Copeland Corporation Refrigeration system
EP0431797A2 (en) * 1989-11-22 1991-06-12 James C. Labrecque Refrigeration
US5522233A (en) * 1994-12-21 1996-06-04 Carrier Corporation Makeup oil system for first stage oil separation in booster system
WO2006022829A1 (en) * 2004-08-09 2006-03-02 Carrier Corporation Co2 refrigeration circuit with sub-cooling of the liquid refrigerant against the receiver flash gas and method for operating the same

Also Published As

Publication number Publication date
EP1921399A2 (en) 2008-05-14
US20080289350A1 (en) 2008-11-27

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