| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent generation of a wax-like solid material causing clogging of a refrigerating circuit and degradation of refrigerating performance in the refrigerating circuit, with respect to the refrigerating circuit using a vane rotary compressor as a compressor, an unsaturated fluorohydrocarbon refrigerant as a refrigerant, and an ether lubricant oil such as polyalkylene glycol as a refrigerating machine oil. <P>SOLUTION: Long-chain epoxyalkane such as 8-25C epoxyalkane is added to the ether lubricant oil such as polyalkylene glycol, to prevent generation of wax-like solid material in the refrigerating circuit. <P>COPYRIGHT: (C)2011,JPO&INPIT |
