Environmentally-friendly advanced transcritical CO2 refrigeration system

该研究项目建立在由NSERC资助的先前实验和数值工作的基础上，以研究二氧化碳（CO2）作为天然制冷剂在汽车空调系统中的使用，特别是在住宅和商业系统中的进一步普遍应用。臭氧消耗潜势和全球变暖潜势是制冷剂释放对环境直接影响的两个既定指标。氢氟碳化物制冷剂一度被认为是可接受的永久性替代液体，但由于其对气候变化的影响，现已列入受管制物质清单。目前高全球变暖潜能值制冷剂（如R-134a）的应用导致了二氧化碳作为自然存在的制冷剂的复兴。

This research program builds upon prior experimental and numerical work funded by NSERC to investigate the use of carbon dioxide (CO2) as a natural refrigerant in automotive air-conditioning systems in particular, with a further general application to residential and commercial systems. Ozone depletion potential and global warming potential are the two established indicators for the direct environmental impact of the release of refrigerants. The hydrofluorocarbon (HFC) refrigerants, which were once expected to be acceptable permanent replacement fluids, are now on the list of regulated substances due to their impact on climate change. The current application of high global warming potential refrigerants such as R-134a has led to the revival of CO2 as a naturally occurring refrigerant.