| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve cooling performance and stability by solving the problem of compatibility of tetrafluoro propene and decomposition of tetrafluoro propene in a new working fluid for a car air conditioner having tetrafluoro propene to be the main current from now as a refrigerant. <P>SOLUTION: In the working fluid for the car air conditioner, tetrafluoro propene is used as the refrigerant and the refrigerant is dissolved in a refrigerator oil using, as a base oil, a polypropylene glycol having average molecular weight of 800 to 1,200 and having acyl groups at both terminals. <P>COPYRIGHT: (C)2011,JPO&INPIT |
