SAE Int'l Cooperative Research Rates Refrigerant for Mobile Air-Conditioning Systems as Superior
November 26, 2008 // Published as a news service by IHS
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HFO1234yf, a new refrigerant for use in mobile air-conditioning systems (MACs), offers superior environmental performance and can be used in future vehicles that are designed to use the new refrigerant, according to results of an SAE International cooperative research program (CRP).
The CRP 1234-1 and CRP1234-2 programs, launched in 2007, investigated the safety and performance of the new refrigerant.
Under the direction of the SAE CRP members, air-conditioning system performance, material compatibility and relative risks of HFO1234yf were evaluated.
On the basis of these studies, this alternative refrigerant - of all proposed alternatives - was judged to have the lowest risk for use in MAC systems in meeting environmental and consumer needs.
This is demonstrated in the results of the Life Cycle Climate Protection analysis to estimate carbon dioxide (CO2) equivalent emissions from MAC operation as described in SAE J2766.
These SAE CRP activities are in response to the international regulations by the EU that require all new vehicles receiving type approval in 2011 or later to use a refrigerant with a global warming potential (GWP) below 150. Current global MAC systems use HFC-134a, a refrigerant with a GWP of 1,430. HFO1234yf has a GWP of 4.
Source: SAE International.