联邦环境局的最新技术测试表明,四氟丙烯或是HFO-1234yf适合作为汽车空调系统制冷剂。这两种制冷剂既满足了汽车行业的要求,又符合了欧盟的指令的规定,但是这两种制冷剂的全球变暖潜值(GWP)要比二氧化碳制冷剂高。2011年1月1日开始,汽车制造商必须减少汽车空调系统的排放量。为了满足欧盟指令2006/40/EC,国际汽车制造业计划在未来使用化学制冷剂四氟丙烯。这种物质将取代现在通用的制冷剂 The latest state-of-the-art testing by the Federal Environment Agency shows that tetrafluoropropene or HFO-1234yf is suitable as a refrigerant in automotive air conditioning systems. Both refrigerants meet the requirements of the automotive industry and comply with the EU directives, but both refrigerants have higher global warming potential (GWP) than carbon dioxide refrigerants. Beginning January 1, 2011, car makers must reduce emissions from their car air conditioning systems. In order to meet the EU directive 2006/40 / EC, the international automotive industry plans to use chemical refrigerant tetrafluoropropene in the future. This substance will replace the current common refrigerant