本文提出了不完全湿压缩概念,并利用制冷剂在温熵图上气化饱和线的坡度系数预测工质的不完全湿压缩特性。分析在AHRI(Air-Conditioning,Heating,and Refrigeration Institute,空调供暖制冷协会)空调和低温制冷工况下,R22、R32和NH_3这三种湿工质的坡度较缓,其最大COP都在不完全湿压缩区间,COP的增加值(与吸气饱和时相比)分别为0.43%/0.32%,2.12%/2.44%和5.89%/9.95%;R134a的坡度系数绝对值过小,吸气带液压缩的理论COP反而下降。研究表明:坡度系数为负值的工质具有较好的不完全湿压缩性能,且坡度越缓,其湿压缩COP改善的几率越大;R32和氨的排气温度高,而且其吸气带液压缩COP改善的潜力也更大,不完全湿压缩对于排气温度高且坡度系数绝对值大的湿工质应用价值更大。 In this paper, the notion of incomplete wet compression is proposed and the incomplete wet compression behavior of the working fluid is predicted by using the gradient coefficient of refrigerant saturation line on the entropy diagram. Analysis of AHRI (Air-Conditioning, Heating, and Refrigeration Institute) air conditioning and low temperature cooling conditions, R22, R32 and NH_3 these three wet working medium slope is slow, the maximum COP are not complete In the wet compression zone, the added values ​​of COP were 0.43% / 0.32%, 2.12% / 2.44% and 5.89% / 9.95%, respectively. The absolute value of the slope factor of R134a was too small, The theoretical COP of compression actually drops. The results show that the working fluid with negative gradient value has better incomplete wet compressibility, and the slower the gradient, the greater the probability of wet compression COP improvement. The temperature of exhaust gas of R32 and ammonia is high, and the suction zone The potential for improvement of hydraulic compression COP is also greater. Incomplete wet compression is of greater value for wet working fluids with high exhaust temperatures and large absolute slope coefficients.