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GM To Adopt New Auto Refrigerant

by Marc S. Reisch
August 2, 2010 | A version of this story appeared in Volume 88, Issue 31

Starting in 2013, General Motors will use a new fluorine-based air-conditioning refrigerant in cars sold in the U.S. Hydrofluoroolefin (HFO)-1234yf, developed by Honeywell and DuPont, has a lower impact on global warming than the refrigerant now in use, hydrofluorocarbon-134a, which has a global-warming potential 1,340 times greater than an equivalent amount of carbon dioxide. The new refrigerant, with a global-warming potential of 4, beat out alternative refrigerant CO2, mostly for equipment cost and reliability reasons (C&EN, July 26, page 23). Beginning in 2011, automakers plan to use HFO-1234yf in new-model cars sold in Europe.

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