Info!
UPDATED 1 Sept: The EI library in London is temporarily closed to the public, as a precautionary measure in light of the ongoing COVID-19 situation. The Knowledge Service will still be answering email queries via email , or via live chats during working hours (09:15-17:00 GMT). Our e-library is always open for members here: eLibrary , for full-text access to over 200 e-books and millions of articles. Thank you for your patience.
UPDATED 1 Sept: The EI library in London is temporarily closed to the public, as a precautionary measure in light of the ongoing COVID-19 situation. The Knowledge Service will still be answering email queries via email , or via live chats during working hours (09:15-17:00 GMT). Our e-library is always open for members here: eLibrary , for full-text access to over 200 e-books and millions of articles. Thank you for your patience.
Polyol esters as HFC-134 a compressor lubricants. S. Komatsuzaki et al. Lubric. Engng., October 1994, 50(10), 801--807.
HFC-134 a (CH3F CF3) is described as a replacement for CFCs in refrigerators and automobile air conditioners in order to avoid ozone layer depletion but system modifications are required to attain the required performance levels. Development of a suitable lubricant is essential. Miscibility and lubricity evaluations of eleven polyol esters are described and illustrated. Miscibility properties are improved by using branched chain fatty acids in the esterification process involved in manufacture. Lubricity performance is improved by using polyol ester molecular structures resistant to hydrolysis but protection from moisture is still necessary. Electrical insulating properties and practical performance features are discussed. 7 refs.
Abstract details
Journal title: Lubrication Engineering
Subjects: Protection of ambient air and climate, Lubricants, Oil, Ozone
