NON-HCFC REFRIGERANT MIXTURE FOR AN ULTRA-LOW TEMPERATURE REFRIGERATION SYSTEM
    41.
    发明公开
    NON-HCFC REFRIGERANT MIXTURE FOR AN ULTRA-LOW TEMPERATURE REFRIGERATION SYSTEM 审中-公开
    HCFC-FREE冷却液混合物的超低温冷却系统

    公开(公告)号:EP1565538A1

    公开(公告)日:2005-08-24

    申请号:EP03790023.0

    申请日:2003-11-25

    发明人: WENG, Chuan

    IPC分类号: C09K5/04

    摘要: Methods and apparatus for a refrigeration heat exchanger section useful in circulating a substantially non-HCFC refrigerant mixture which comprises: a compressor means, an auxiliary condenser, a first condenser, a second condenser, a third condenser, a subcooler and a liquid/gas separator, wherein a subcooled refrigerant liquid mixture taken as bottoms from the liquid/gas separator is distributed and expanded by a first expansion means and a second expansion means to form first and second expanded streams, respectively, such that the first expanded stream is returned to the auxiliary condenser and compressor in order to avoid overheating of the compressor.

    REFRIGERANT COMPOSITIONS
    42.
    发明公开
    REFRIGERANT COMPOSITIONS 有权
    制冷剂组合物

    公开(公告)号:EP1560892A1

    公开(公告)日:2005-08-10

    申请号:EP03751056.7

    申请日:2003-10-13

    IPC分类号: C09K5/04

    摘要: Refrigerant composition are disclosed which comprises: (a) pentafluorethane, trifluoromethoxydifluoromethane or hexafluorocyclopropane, or a mixture of two or more thereof, in an amount of at least 75% based on the weight of the composition, (b) 1,1,1,2- or 1,1,2,2-tetrafluoroethane, trifluoromethoxypentafluoroethane, 1,1,1,2,3,3-heptafluoropropane or a mixture of two or more thereof, in an amount of from 10 to 20 % by weight based on the weight of the composition and (c) an ethylenically unsaturated or saturated hydrocarbon, optionally containing one or more oxygen atoms, with a boiling point from -50 °C to +35 °C, or a mixture thereof in an amount from 1 % to 4 % by weight based on the weight of the composition the weight ratio of component (a): component (b) being at least 4:1.

    摘要翻译: 公开了制冷剂组合物,其包含:(a)基于组合物的重量至少75%的量的五氟乙烷,三氟甲氧基二氟甲烷或六氟环丙烷或其两种或更多种的混合物,(b)1,1,1, 2-或1,1,2,2-四氟乙烷,三氟甲氧基五氟乙烷,1,1,1,2,3,3-七氟丙烷或其两种或更多种的混合物,其量为10-20重量%,基于 (c)任选含有一个或多个氧原子的烯属不饱和烃或饱和烃,其沸点为-50℃至+ 35℃,或其混合物的量为1重量%至 (a):组分(b)的重量比为至少4:1,基于组合物的重量为4重量%。

    Refrigerant compositions
    50.
    发明公开
    Refrigerant compositions 失效
    Kühlmittelzusammensetzungen

    公开(公告)号:EP1195421A2

    公开(公告)日:2002-04-10

    申请号:EP02000107.9

    申请日:1998-07-15

    申请人: Rhodia Limited

    IPC分类号: C09K5/04

    摘要: A refrigerant composition is described which comprises:

    (a) octafluopropane and, optionally, pentafluoroethane, trifluoromethoxydifluoromethane or hexafluoro-cyclopropane, or a mixture of two or more thereof, in an amount from 5 to 60% based on the weight of the composition,
    (b) pentafluoroethane, 1,1,1,2- or 1,1,2,2-tetrafluoroethane, 1,1-difluoroethane, trifluoromethoxypentafluoroethane, 1,1,1,2,3,3,3-heptafluoropropane or 1,1,1,2,2,3,3-heptafluoropropane, or a mixture of two or more thereof, in an amount from 50 to 94% by weight based on the weight of the composition
    (c) an unsubstituted hydrocarbon of the formula C n H m in which n is at least 4 and m is at least 2n-2, other than methyl propane, in an amount from 1 to 10% by weight based on the weight of the composition.

    摘要翻译: 描述了一种制冷剂组合物,其包含:(a)基于组合物的重量,5-40%的八氟丙烷和任选的五氟乙烷,三氟甲氧基二氟甲烷或六氟环丙烷或其两种或多种的混合物,( b)五氟乙烷,1,1,1,2-或1,1,2,2-四氟乙烷,1,1-二氟乙烷,三氟甲氧基五氟乙烷,1,1,1,2,3,3,3-七氟丙烷或1,1 ,1,2,2,3,3-七氟丙烷或其两种或多种的混合物,其量为组合物(c)重量的50至94重量%,式C n的未取代的烃 H m,其中n为至少4,m为至少2n-2,甲基丙烷除外,其量为组合物重量的1至10重量%。