The key role of propane in a sustainable cooling sector

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http://eprints.org/relation/isVersionOf https://pure.iiasa.ac.at/id/document/98522 http://eprints.org/relation/isVolatileVersionOf https://pure.iiasa.ac.at/id/document/98522 http://eprints.org/relation/issmallThumbnailVersionOf https://pure.iiasa.ac.at/id/document/98522 archive 2 disk0/00/01/81/53 2022-08-16 03:43:55 2022-08-16 03:44:55 2022-08-16 03:43:55 article show Purohit P. 1873 0000-0002-7265-6960 Höglund-Isaksson L. 1786 0000-0001-7514-3135 Borgford-Parnell N. Klimont Z. 1473 0000-0003-2630-198X Smith C.J. 9291 0000-0003-0599-4633 The key role of propane in a sustainable cooling sector pub ECE IACC ECEPM Split air conditioners (ACs) are the most used appliance for space cooling worldwide. The phase-down of refrigerants with high global warming potential (GWP) prescribed by the Kigali Amendment to the Montreal Protocol has triggered a major effort to find less harmful alternative refrigerants. HFC-32 is currently the most common refrigerant to replace HFC-410A in split ACs. The GWP of HFC-32 is about one-third that of HFC-410A but still considerably higher than that of a growing number of nonfluorinated alternatives like propane with a GWP of <1, which have recently become commercially available for split ACs. Here, we show that a switch to propane as an energy-efficient and commercially available low-GWP alternative in split ACs could avoid 0.09 (0.06 to 0.12) °C increase in global temperature by the end of the century. This is significantly more than the 0.03 (0.02 to 0.05) °C avoided warming from a complete switch to HFC-32 in split ACs. 2022 doi:10.1073/pnas.2206131119 239 128 159 3162 public Proceedings of the National Academy of Sciences 119 34 e2206131119 TRUE 0027-8424 info:eu-repo/semantics/article