根据混合工质优势互补的原理，提出R32与R123的二元非共沸混合制冷剂。基于Matlab计算平台，并调用NIST开发的Refprop物性参数编制了混合工质计算程序，对5种不同工况的单级循环性能进行了计算。结果显示，在工况2和4下，R123中添加R32质量分数5～7%，系统制冷COP相比纯R123提高38.08%～52.94%，系统的压力提高显著；在工况5下，当R32中添加R123质量分数10%时，系统的COP相比纯R32可提高6.4%，排气温度降低3.2℃，混合GWP值相比R32降低8.22%。%Based on the principle of complementary advantages of mixed refrigerants, this paper proposed binary zeotropic refrigerant mixtures of R32 and R123. Matlab is used for theoretical circular calculation of the mixture at different proportion by calling property parameters from Refprop developed by NIST. By comparasion of performance parameters under 5 different conditions in the single compression system, the result indicates that, after adding 5~7 percent R32 to pure R123 under the second and fourth conditions, the coefficient of performance(COP) of the mixed refrigerant can increase 38.08%~52.94%, significantly increasing the system pressure. After adding 10 percent R123 to R32 under the 5th condition, theCOP of the mixed refrigerant can increase 6.4%, the discharge temperature decreases 3.2℃, TheGWP can be reduced by 8.22%.
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