| 摘要 |
PURPOSE:A mixed refrigerant that is composed of chlorodifluoromethane and difluoromethane, thus being useful as a refrigerant for exchange because it can increase the refrigeration capacity only by exchange of refrigerant without modification of the refrigerator. CONSTITUTION:Chlorodifluoromethaen is mixed with difluoromethane. An appropriate selection of mixing ratio of difluoromethane in chlorodifluoromethane can increase the refrigeration capacity and energy efficiency ratio compared to chlorodifluoromethane only. The limit pressure of a refrigerator is determined by designing conditions and the refrigerators designed to use chlorofluoromethane can not use other refrigerants having higher vapor pressure than difluoromethane. The mixing ratio of difluoromethane is preferably less than 30, especially 2-25wt% from a view point of general pressure tolerance. |
