| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a flame-retardant refrigerant composition used for a freezing apparatus, a cooling and heating air conditioner, etc., without a risk to depletion of the ozone layer and having good cooling performances and using a refrigerator oil such as a mineral oil or an alkylbenzene and to provide a refrigerant circuit using the composition. <P>SOLUTION: A flame-retardant refrigerant composition composed of octafluorocyclobutane and butane or a flame-retardant azeotropic refrigerant composition obtained by regulating the mixing ratio of both is used. Problems can be solved by sealing the refrigerant composition in the refrigerant circuit composed by successively connecting a compressor to a condenser, a capillary tube and an evaporator. <P>COPYRIGHT: (C)2004,JPO |
