Performance analysis of HCFCs, HFCs and natural refrigerants under different working conditions based on single-stage vapor compression system

Environmental problems such as the destruction of the ozone layer and global warming force people to choose refrigerants. It has become an inevitable trend to look for refrigerants with low ODP (Ozone Depletion Potential) and GWP (Global Warming Potential) to replace the refrigerants that are harmful to the environment. In addition, we also need to consider the COP (Coefficient Of Performance) and safety of refrigerants. This paper is based on a single-stage vapor compression refrigeration system, The COP of different refrigerants are calculated and analyzed under five different working conditions. After calculation, the COP of R717 is the highest under five working conditions, and its GWP is 0, but its safety level is only B2L.Therefore, it is very difficult to take into account the various properties of refrigerants at the same time.