Next Generation Environmentally Sustainable Refrigeration System

这项研究计划将调查低全球变暖潜能制冷剂在汽车和住宅应用中的使用情况。臭氧消耗潜势和全球变暖潜势是衡量制冷剂排放对环境的直接影响的两个众所周知的指标。最近，欧盟宣布了一项指令，禁止在移动空调(MAC)中使用GWP超过150的制冷剂。MAC指令将在2017年前逐步淘汰所有车辆中使用的氟化温室气体，如R-134a(全球变暖潜能值=1410)。对低全球升温潜能值制冷剂的偏爱导致了最近对氢氟烯烃(HFO)制冷系统等替代品的兴趣。美国环保局已最终批准在汽车空调中使用HFO-1234yf(GWP=4)。这种制冷剂的主要优点包括零消耗臭氧潜能值、低全球升温潜能值和低可燃性，其压力曲线与R-134a相似。初步研究已确定氢氟辛烷作为潜在的全球汽车制冷剂替代品的适用性。

This research program will investigate the use of low global warming potential refrigerants in automotive as well as residential applications. Ozone depletion potential (ODP) and global warming potential (GWP) are the two well known indicators of the direct environmental impact of the release of refrigerants. Recently, the European Union has announced a directive that bans refrigerants having a GWP exceeding 150 in mobile air conditioners (MAC). The MAC directive will phase out the use of fluorinated greenhouse gases, such as R-134a (GWP=1410) in all vehicles by 2017. A preference for low GWP refrigerants has led to recent interest in such alternatives as the hydrofluoroolefin (HFO) refrigeration system. The US Environmental Protection Agency has issued final approval for the use of HFO-1234yf (GWP=4) in MAC. The key advantages of this refrigerant include zero ODP, low GWP, and low flammability with similar pressure curves to R-134a. Initial research has identified the applicability of HFOs as a potential global automotive refrigerant alternative.