EP1660607A1 - Utilisation d'un melange de refrigerants - Google Patents

Utilisation d'un melange de refrigerants

Info

Publication number
EP1660607A1
EP1660607A1 EP04763816A EP04763816A EP1660607A1 EP 1660607 A1 EP1660607 A1 EP 1660607A1 EP 04763816 A EP04763816 A EP 04763816A EP 04763816 A EP04763816 A EP 04763816A EP 1660607 A1 EP1660607 A1 EP 1660607A1
Authority
EP
European Patent Office
Prior art keywords
refrigerant
refrigerant mixture
mixture
air conditioning
mixture according
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Withdrawn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
EP04763816A
Other languages
German (de)
English (en)
Inventor
Felix Flohr
Christoph Meurer
Martin Schwiegel
Werner Krücke
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.)
Solvay Fluor GmbH
Original Assignee
Solvay Fluor GmbH
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
Priority claimed from DE102004032792A external-priority patent/DE102004032792A1/de
Application filed by Solvay Fluor GmbH filed Critical Solvay Fluor GmbH
Publication of EP1660607A1 publication Critical patent/EP1660607A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
    • C09K5/02—Materials undergoing a change of physical state when used
    • C09K5/04—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
    • C09K5/02—Materials undergoing a change of physical state when used
    • C09K5/04—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa
    • C09K5/041—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for compression-type refrigeration systems
    • C09K5/044—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for compression-type refrigeration systems comprising halogenated compounds
    • C09K5/045—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for compression-type refrigeration systems comprising halogenated compounds containing only fluorine as halogen
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2205/00—Aspects relating to compounds used in compression type refrigeration systems
    • C09K2205/10—Components
    • C09K2205/106—Carbon dioxide
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2205/00—Aspects relating to compounds used in compression type refrigeration systems
    • C09K2205/10—Components
    • C09K2205/12—Hydrocarbons
    • C09K2205/122—Halogenated hydrocarbons

Definitions

  • the invention relates to a refrigerant mixture, in particular a refrigerant for air conditioning systems in motor vehicles and commercial vehicles, preferably in car air conditioning systems.
  • halogenated hydrocarbons especially chlorofluorocarbons
  • GWP global warming potential
  • partially fluorinated hydrocarbons A large number of substances that have no ozone depletion potential are now available in the field of refrigeration technology.
  • DE 41 16 274 discloses a refrigerant mixture which contains CO2 and partially fluorinated hydrocarbons such as R 134a (CF3-CH2F) or R 152a (CHF2-CH3). These mixtures are to be used in particular as replacements for the refrigerants R 22 (CHCIF2) and R 502 (an azeotropic mixture of (CHCIF2) (R 22) and C2CIF5 (R 115)).
  • WO 00/39242 also describes a cold mixture as a substitute for R 22 (CHCIF2) or R 502 (mixture of CHCIF2 and C2CIF5). This mixture consists of fluoroethane (R 161) and trifluoroiodomethane (R 13 I 1).
  • the object of the invention is to provide a refrigerant mixture which can be used as a substitute for R 134a.
  • the refrigerant mixture should have a minimal global warming potential, be non-toxic and, if possible, non-flammable.
  • the refrigerant mixture according to the invention contains or consists of halogenated hydrocarbons with a GWPioo less than 150 and CO 2
  • Halogenated hydrocarbons with a GWP-J QO less than 150 are especially suitable as 1.1.-difluoroethane (R 152a), fluoroethane (R 161) and trifluoroiodomethane, which in combination with CO2 as a substitute for the refrigerant 1.1.1.2-tetrafluoroethane (R 134a) can be used.
  • Fluoroethane and difluoroethane are flammable as individual substances, but have a GWP-joo below 150 and are very volatile in the atmosphere. How to find a GWP-
  • Trifluoroiodomethane is not flammable, but it is also very unstable in the atmosphere. It was found that the disadvantageous properties of the individual substances can be compensated for by combining the individual substances with CO2 and the refrigerant mixture according to the invention can be used in particular for automotive air conditioning systems. These refrigerant mixtures are much cheaper than 1.1.1.2-tetrafluoromethane in terms of their direct greenhouse potential and can therefore be used as a substitute.
  • the composition of the refrigerant mixture can be varied depending on the pressure in the refrigerant system.
  • composition of the refrigerant mixture is selected so that the risk of flammability is reduced or severely restricted.
  • a mixture of 98-70 wt% R 152a and 2-30 wt% CO2 is used to replace R 134a.
  • R 152a behaves similar to R 134a in its thermophysical properties. However, due to the flammability of R 152a, it can be used in directly evaporating systems, e.g. in automobiles.
  • the explosion range of R 152a is between 4.5% by volume lower explosion limit and 21.8% by volume upper explosion limit. In the case of mixtures with a CO2 content of 30% by weight, the lower explosion limit increases to 13% by volume. (see Fig. 1). Increasing the lower explosion limit reduces the risk that flammable refrigerants generally have.
  • CO2 has very different thermophysical properties than R 134a and R 152a. CO2 is not flammable. CO2 has a significantly higher pressure level than R 134a or R 152a.
  • the critical temperature of 31 ° C means that CO2 for the air conditioning of vehicles cannot be used in the classic subcritical compression refrigeration process, but has to go through a transcritical process.
  • the transcritical process leads to significantly higher process pressures (> 100 bar) and a significant deterioration in the theoretically achievable maximum efficiency.
  • the mixture was found to have a high volumetric refrigeration capacity. This high cooling capacity leads to a reduction in the required stroke volume of the compressor and thus to a reduction in the compressor size (see example 1).
  • Mixtures of R 152a and CO2 with a CO2 content> 2% by weight have a higher pressure level than R 134a. Higher pressure levels improve heat transfer and reduce friction pressure losses. Both effects have a positive effect on the energy efficiency of the overall system. Mixtures of R 152a and CO2 have a large temperature glide. This has a positive effect if cooling and heating are required at sliding temperatures. The sliding heat transfer is present in all heat transfers in which there is no phase change on the secondary side and thus also in the air cooling or air heating.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Thermal Sciences (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Lubricants (AREA)

Abstract

L'invention concerne un mélange de réfrigérants pouvant être utilisé pour remplacer le réfrigérant 1,1,1,2-tétrafluoroéthane (R 134a), ledit mélange contenant des hydrocarbures halogénés présentant un GWP100 inférieur à 150 et du CO2 ou étant constitué desdits hydrocarbures et de CO2. Ce mélange de réfrigérants s'utilise de préférence comme réfrigérant dans des systèmes de climatisation, notamment dans des systèmes de climatisation automobile.
EP04763816A 2003-08-27 2004-08-05 Utilisation d'un melange de refrigerants Withdrawn EP1660607A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10339444 2003-08-27
DE102004032792A DE102004032792A1 (de) 2003-08-27 2004-07-07 Verwendung eines Kältemittelgemisches
PCT/EP2004/008772 WO2005021675A1 (fr) 2003-08-27 2004-08-05 Utilisation d'un melange de refrigerants

Publications (1)

Publication Number Publication Date
EP1660607A1 true EP1660607A1 (fr) 2006-05-31

Family

ID=34276515

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04763816A Withdrawn EP1660607A1 (fr) 2003-08-27 2004-08-05 Utilisation d'un melange de refrigerants

Country Status (6)

Country Link
US (1) US20060202154A1 (fr)
EP (1) EP1660607A1 (fr)
JP (1) JP2007503486A (fr)
KR (1) KR20060071405A (fr)
BR (1) BRPI0413895A (fr)
WO (1) WO2005021675A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7413674B2 (en) * 2004-04-16 2008-08-19 Honeywell International Inc. Azeotrope-like trifluoroiodomethane compositions
FR2910016B1 (fr) * 2006-12-19 2009-02-20 Arkema France Compositions utilisables comme fluide frigorigene
CA2682076C (fr) 2007-03-27 2015-05-26 Dow Global Technologies Inc. Agents d'expansion a base d'alcene fluore pour mousse polymere de qualite
JP2011097497A (ja) * 2009-11-02 2011-05-12 Sony Corp データ転送装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4116274C2 (de) * 1991-05-17 1998-03-19 Forschungszentrum Fuer Kaeltet Kältemittel
DE69310737T2 (de) * 1992-07-10 1997-11-20 Du Pont Azeotropische zusammensetzungen auf basis von perfluorethan und trifluormethan
ATE164864T1 (de) * 1994-11-02 1998-04-15 Solvay Fluor & Derivate Flüssiges kohlendioxid enthaltende treibmittel
GB9618207D0 (en) * 1996-08-30 1996-10-09 Ici Plc Refrigerant compositions
JP3949889B2 (ja) * 1998-05-22 2007-07-25 ゾルファイ フルーオル ゲゼルシャフト ミット ベシュレンクテル ハフツング ポリウレタンフォームおよび発泡された熱可塑性プラスチックの製造
JP4153590B2 (ja) * 1998-06-26 2008-09-24 株式会社三愛 作動流体
GB9828737D0 (en) * 1998-12-29 1999-02-17 Star Refrigeration Vaporisable composition

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2005021675A1 *

Also Published As

Publication number Publication date
WO2005021675A1 (fr) 2005-03-10
KR20060071405A (ko) 2006-06-26
JP2007503486A (ja) 2007-02-22
US20060202154A1 (en) 2006-09-14
BRPI0413895A (pt) 2006-10-24

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Inventor name: KRUECKE, WERNER

Inventor name: MEURER, CHRISTOPH

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