不完全湿压缩特性研究

发布时间：2019-03-27 10:57

【摘要】：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。
[Abstract]:In this paper, the concept of incomplete wet compression is proposed, and the incomplete wet compression characteristics of refrigerant are predicted by the gradient coefficient of the gasification saturation line of refrigerant on the temperature entropy diagram. Under the condition of AHRI (Air-Conditioning,Heating,and Refrigeration Institute, heating and Refrigeration Association) air conditioning and low temperature refrigeration, the gradient of R22, R32 and NH_3 is relatively slow, and the maximum COP is in incomplete wet compression range. The added value of COP was 0.43% / 0.32%, 2.12% / 2.44% and 5.89% / 9.95%, respectively. The absolute value of slope coefficient of R 134a is too small, but the theoretical COP of suction zone fluid compression decreases. The results show that the working fluid with negative slope coefficient has better incomplete wet compression performance, and the slower the gradient is, the greater the probability of improvement of wet compression COP is. The exhaust temperature of R32 and ammonia is high, and the potential of improving COP of suction zone fluid compression is greater. Incomplete wet compression is more valuable for wet working fluid with high exhaust temperature and high absolute slope coefficient.
【作者单位】：上海理工大学能源与动力工程学院;
【基金】：博导类联合基金资助项目(No.3312301001) 上海市研究生创新基金资助项目(No.JWCXSL1201)
【分类号】：TB64

【相似文献】