NO20081411L - Transcritical dress system with improved dress capacity - Google Patents

Transcritical dress system with improved dress capacity

Info

Publication number
NO20081411L
NO20081411L NO20081411A NO20081411A NO20081411L NO 20081411 L NO20081411 L NO 20081411L NO 20081411 A NO20081411 A NO 20081411A NO 20081411 A NO20081411 A NO 20081411A NO 20081411 L NO20081411 L NO 20081411L
Authority
NO
Norway
Prior art keywords
transcritical
heating medium
refrigerant
cooling
flow
Prior art date
Application number
NO20081411A
Other languages
Norwegian (no)
Inventor
Finn Guldager Christensen
Original Assignee
Knudsen Koling As
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 Knudsen Koling As filed Critical Knudsen Koling As
Publication of NO20081411L publication Critical patent/NO20081411L/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
    • F25B40/00—Subcoolers, desuperheaters or superheaters
    • F25B40/04—Desuperheaters
    • 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
    • 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
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/39—Dispositions with two or more expansion means arranged in series, i.e. multi-stage expansion, on a refrigerant line leading to the same evaporator
    • 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
    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D16/00—Devices using a combination of a cooling mode associated with refrigerating machinery with a cooling mode not associated with refrigerating machinery
    • 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
    • F25B2400/22—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
    • F25B2400/24—Storage receiver heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
    • F28D20/02—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat
    • F28D20/021—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat the latent heat storage material and the heat-exchanging means being enclosed in one container

Abstract

Foreliggende oppfinnelse angår et transkritisk kjølesystem med forbedret ytelse under transkritisk drift, omfattende et strømningskretsløp for resirkulasjon av et kjølemiddel, strømningskretsløpet omfattende en kompressor for generasjon av en kjølemiddelstrømning fra en lavtrykksside til en høytrykksside av kompressoren og, i rekkefølgen definert av strømningsretningen, koblet i serie med en gasskjøler for kjøling av kjølemiddelet mot omgivelsestemperaturen, en første trykkreduserende anordning, slik som en reduksjonsventil som skiller lavtrykkssiden og høytrykkssiden av kompressoren, og en første evaporator for fordamping av kjølemiddelet, feks. i en kjølingsanordning. For å kunne forbedre ytelsen av det transkritiske kjølesystemet under transkritisk drift, er en varmeveksler med en strømningskanal for kjølemiddel koblet inn i strømningskretsløpet mellom gasskjøleren og den trykkreduserende anordningen. Varmeveksleren har også en strømningskanal for varmemedium for en varmemediumstrømning. Strømningskanalen for varmemediet er koblet i serie med en lagringstank for lagring av varmemediet, feks. vann, lagringstanken videre omfattende en andre evaporator koblet i strømningskretsløpet i parallell med den første evaporatoren for kjøling av varmemediet hvorved kjølekapasiteten til systemet som er tilgjengelig ved lave omgivelsestemperaturer, dvs. under subkritisk operasjon av systemet, kan lagres i lagringstanken for senere bruk, slik som for bruk under transkritisk drift av systemet, da systemet uten den lagrede kjølingsevnen ville kjøres med en nedsatt ytelse.The present invention relates to a transcritical refrigeration system with improved performance during transcritical operation, comprising a flow circuit for recirculating a refrigerant, the flow circuit comprising a compressor for generating a refrigerant flow from a low pressure side to a high pressure side of the compressor and, in order, with a gas cooler for cooling the refrigerant to ambient temperature, a first pressure reducing device, such as a reduction valve separating the low pressure side and the high pressure side of the compressor, and a first evaporator for evaporating the refrigerant, e.g. in a cooling device. In order to improve the performance of the transcritical cooling system during transcritical operation, a heat exchanger with a refrigerant flow channel is connected to the flow circuit between the gas cooler and the pressure reducing device. The heat exchanger also has a heating medium flow channel for a heating medium flow. The flow channel for the heating medium is connected in series with a storage tank for storing the heating medium, e.g. water, the storage tank further comprising a second evaporator connected in the flow circuit in parallel with the first evaporator for cooling the heating medium whereby the cooling capacity of the system available at low ambient temperatures, i.e. during subcritical operation of the system, can be stored in the storage tank for later use. for use during transcritical operation of the system, as the system without the stored cooling capacity would run at a reduced performance.

NO20081411A 2005-08-25 2008-03-18 Transcritical dress system with improved dress capacity NO20081411L (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DKPA200501184 2005-08-25
PCT/DK2006/000459 WO2007022778A1 (en) 2005-08-25 2006-08-24 A transcritical cooling system with improved cooling capacity

Publications (1)

Publication Number Publication Date
NO20081411L true NO20081411L (en) 2008-03-18

Family

ID=37188781

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20081411A NO20081411L (en) 2005-08-25 2008-03-18 Transcritical dress system with improved dress capacity

Country Status (3)

Country Link
EP (1) EP1920203A1 (en)
NO (1) NO20081411L (en)
WO (1) WO2007022778A1 (en)

Families Citing this family (12)

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US8087256B2 (en) 2007-11-02 2012-01-03 Cryomechanics, LLC Cooling methods and systems using supercritical fluids
CA2820930C (en) 2008-10-23 2016-04-26 Serge Dube Co2 refrigeration system
PL2764303T3 (en) 2011-10-07 2021-12-13 Danfoss A/S Method for controlling gas pressure in cooling plant
CN103175323B (en) * 2011-12-23 2017-03-01 东普雷股份有限公司 Refrigerating plant using ternary pipe-type heat exchanger
CA2815783C (en) 2013-04-05 2014-11-18 Marc-Andre Lesmerises Co2 cooling system and method for operating same
US11656005B2 (en) 2015-04-29 2023-05-23 Gestion Marc-André Lesmerises Inc. CO2 cooling system and method for operating same
EP3112776B1 (en) * 2015-06-30 2024-01-10 Hiref S.p.A. Carbon dioxide compression refrigeration system
US10458685B2 (en) * 2016-11-08 2019-10-29 Heatcraft Refrigeration Products Llc Absorption subcooler for a refrigeration system
CN107933594A (en) * 2017-12-18 2018-04-20 中车大连机车研究所有限公司 One kind is based on CO2The trans critical cycle railway vehicle air conditioner system of refrigerant
CN110186221A (en) * 2019-06-27 2019-08-30 中国科学院理化技术研究所 CO 2 trans-critical heat pump system
IT201900010572A1 (en) * 2019-07-01 2021-01-01 Enex S R L IMPROVED REFRIGERATION SYSTEM
IT202000004375A1 (en) * 2020-03-02 2021-09-02 Claudio Marazzi REFRIGERATOR UNIT WITH CO2 IN SUBCRITICAL CONDITIONS.

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US1795872A (en) * 1928-09-29 1931-03-10 Frigidaire Corp Refrigerating apparatus
US1874803A (en) * 1931-01-12 1932-08-30 Reed Frank Maynard Heat exchange mechanism
DE823143C (en) * 1949-08-18 1951-11-29 Linde Eismasch Ag Prevention of the generation of large amounts of steam behind the float regulator in refrigeration systems
FR1082615A (en) * 1952-01-11 1954-12-30 Cold withdrawal to facilitate condensation of refrigerant fluids
GB1544804A (en) * 1977-05-02 1979-04-25 Commercial Refrigeration Ltd Apparatus for and methods of transferring heat between bodies of fluid or other substance
US5383339A (en) * 1992-12-10 1995-01-24 Baltimore Aircoil Company, Inc. Supplemental cooling system for coupling to refrigerant-cooled apparatus
DE19522884A1 (en) * 1995-06-23 1997-01-02 Inst Luft Kaeltetech Gem Gmbh Compression refrigeration circuit operating system
JP3990524B2 (en) * 2000-01-28 2007-10-17 株式会社前川製作所 Compressive refrigeration unit for subcritical and supercritical operation
JP2002081772A (en) * 2000-09-01 2002-03-22 Sanyo Electric Co Ltd Refrigerant circuit and vending machine using the same
JP2002098428A (en) * 2000-09-26 2002-04-05 Sanyo Electric Co Ltd Refrigerating/freezing apparatus
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DE10140630A1 (en) * 2001-08-18 2003-02-27 Bayerische Motoren Werke Ag Cooling plant for motor vehicles has coolant expansion elements and heat accumulator with two operating modes
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WO2006087011A1 (en) * 2005-02-18 2006-08-24 Carrier Corporation Co2-refrigeration device with heat reclaim

Also Published As

Publication number Publication date
WO2007022778A1 (en) 2007-03-01
EP1920203A1 (en) 2008-05-14

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