进行了一项实验研究，比较了R134a和R32三种共混物与R22的性能。定量研究了制冷剂加注量对制冷模式下运行的空气-空气热泵中制冷剂性能的影响。混合物由R32和R134a的40%/60%、30%/70%和20%/80%的质量比组成。测试了5.00、5.45、5.90和6.00千克（11、12、13和14磅）的电荷水平。在每个充电水平下，测试27.8℃、35.0℃和40.6℃（82华氏度、95华氏度和105华氏度）的室外房间条件。所有试验的膨胀装置均为1.96毫米（0.077英寸）直径孔。三个变量用于量化制冷剂性能——总容量、总功耗和性能系数（COP）。 三种混合物中的任何一种的热泵性能都不如R22。与R22相比，容量减少了7%到17%。在某些情况下，使用混合物的最佳COP在使用R22的情况下在3%以内，但这些COP的相应容量比使用R22的基本情况下大约低12%。混合物的最佳结果是40%/60%的混合物。容量比基本情况低7.3%，COP比基本情况低8.5%。关键词:冷却，性能，空气-空气热泵，R22，R32，R134a，制冷剂，混合物，实验，比较，测试，性能系数，耗电量，能耗，容量:研讨会，ASHRAE Trans。1994年，第100卷，第2部分

An experimental study was conducted in which the performance of three blends of R134a and R32 was compared to that of R22. The effect of refrigerant charge on the performance of these refrigerants in an air-to-air heat pump operating in the cooling mode was quantified. The mixtures consisted of 40%/60%, 30%/70%, and 20%/80% ratios (by mass) of R32 and R134a. Charge levels of 5.00, 5.45, 5.90, and 6.00 kg (11, 12, 13, and 14 lb) were tested. At each charge level, outdoor room conditions of 27.8 deg C, 35.0 deg C, and 40.6 deg C (82 deg F, 95 deg F, and 105 deg F) were tested. The expansion device for all tests was a 1.96mm (0.077 in.) diameter orifice. Three variables were used to quantify refrigerant performance - total capacity, total electrical power consumption, and coefficient of performance (COP). The performance of the heat pump with any of the three mixtures was not as good as with R22. The capacities were between 7% and 17% less than with R22. The best COPs with the mixtures were within 3% of that with R22 in some cases, but the corresponding capacities at these COPs were approximately 12% lower than that in the R22 base case. The best results for a mixture were with the 40%/60% blend. The capacity was 7.3% less than the base case and the COP was 8.5% lower.KEYWORDS: cooling, performance, air air heat pumps, R22, R32, R134a, refrigerants, mixtures, experiment, comparing, testing, coefficient of performance, electricity consumption, energy consumption, capacity