div class=trans-pagebutton class=gotoPage data-page=1Page 1button div class=trans-imageimg data-url=documentiej-1998-no1-the-experiment-found-that-cops-of-r-ll-and-r-12-were-35-and-25htmlpage=1 data-page=1 class=trans-thumb lazyload alt=Page 1: IEJ 1998 No1 - ThaiScience · The experiment found that COPs of R-ll and R-12 were 35 and 25 respectively COP was low when an electrical heater was switched on Rossi et al loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader033fdocumentsnetreader033viewer20220414135e19be20576b34017a6bd5dfhtml5thumbnails1jpg width=140 height=200 divdivdiv class=trans-pagebutton class=gotoPage data-page=2Page 2button div class=trans-imageimg data-url=documentiej-1998-no1-the-experiment-found-that-cops-of-r-ll-and-r-12-were-35-and-25htmlpage=2 data-page=2 class=trans-thumb lazyload alt=Page 2: IEJ 1998 No1 - ThaiScience · The experiment found that COPs of R-ll and R-12 were 35 and 25 respectively COP was low when an electrical heater was switched on Rossi et al loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader033fdocumentsnetreader033viewer20220414135e19be20576b34017a6bd5dfhtml5thumbnails2jpg width=140 height=200 divdivdiv class=trans-pagebutton class=gotoPage data-page=3Page 3button div class=trans-imageimg data-url=documentiej-1998-no1-the-experiment-found-that-cops-of-r-ll-and-r-12-were-35-and-25htmlpage=3 data-page=3 class=trans-thumb lazyload alt=Page 3: IEJ 1998 No1 - ThaiScience · The experiment found that COPs of R-ll and R-12 were 35 and 25 respectively COP was low when an electrical heater was switched on Rossi et al loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII=...