化工进展2017，Vol.36Issue(7)：2360-2367,8.DOI:10.16085/j.issn.1000-6613.2016-2089
热泵蒸汽系统准两级压缩联合过冷器循环的性能分析及优化
Performance analysis and optimization of a coupling sub-cooler heat pump steam system in a quasi two-stage compression cycle
摘要
Abstract
A sub-cooler and quasi two-stage compression cycle were introduced for classical heat pump steam system to overcome the negative effects on coefficient of performance (COP) and exhaust temperature of high compression ratio.Simple and revised systems were conducted in a comparative study on their theoretical cycle performance,at the fixed input heat source temperature of 65 ℃ and condensing temperature range of 115-135℃,using R245fa as working fluid.Then the parameters of economizer (supplement rate of gas,expressed as B) and sub-cooler (sub-cooling rate of heat source water,expressed as A) were optimized to achieve higher COP.The result showed that,the revised system presents better cycle and safety performances,when adopting 0.4 and 0.2 as the typical value for B and A respectively,increasing COP value by 13.5％,cutting exhaust temperature and compression ratio by 1.72℃ and 19.2％,on average.The revised system using optimized parameters of economizer and sub-cooler can achieve a mean increase on COP of 32.36％.关键词
热泵蒸汽系统/能效系数/准两级压缩/过冷器Key words
heat pump steam system/cofficient of performance (COP)/quasi two-stage compression/sub-cooler分类
能源科技引用本文复制引用
刘炳伸,龚宇烈,陆振能,曲勇,高一峰..热泵蒸汽系统准两级压缩联合过冷器循环的性能分析及优化[J].化工进展,2017,36(7):2360-2367,8.基金项目
广东省科技计划(2014A020223001)及科技型中小企业技术创新项目(14C26213701973). （2014A020223001）
