化工进展Issue(2)：409-416,8.DOI:10.16085/j.issn.1000-6613.2016.02.011
回热器对双级压缩和复叠式压缩制冷系统影响的分析
Effect of internal heat exchanger on two-stage compression and cascade compression refrigeration system
摘要
Abstract
In order to study the effect of internal heat exchanger on two-stage compression and cascade compression refrigeration system,R404A two-stage compression refrigeration system and R404A/R23 cascade compression refrigeration system were taken as examples. Through exergy analysis and establishment of two kinds of refrigeration systems thermodynamic model,the compressor discharge temperature,cooling capacity per unit mass,refrigerant mass flow,system COP,total system exergy loss and exergy efficiency of the regenerator were analyzed. In the two-stage compression refrigeration system,when thermal efficiency was between 0.1 and 0.9,system COP increased by 4.0%,leading to a reduction in total loss of 9.6 percent exergy system and the system exergy efficiency could increase by 7.1%. In the cascade compression refrigeration system,system COP and exergy efficiency of the system increased with increasing high-temperature regenerator efficiency and decreased with decreasing low-level heat recovery efficiency. The total loss of exergy systems decreased with increasing high temperature level regenerator efficiency and increased with increasing low-level heat recovery efficiency.关键词
回热器/双级压缩/复叠式压缩/热力学/性能分析Key words
liquid-suction heat exchangers/two-stage compression/cascade compression/thermodynamics/performance analysis/exergy分类
通用工业技术引用本文复制引用
郭耀君,谢晶,朱世新,王金锋..回热器对双级压缩和复叠式压缩制冷系统影响的分析[J].化工进展,2016,(2):409-416,8.基金项目
国家农业成果转化资金项目（2013GB2C000156）及上海市科委项目（13dz1203702）。 （）
