化学工程2018，Vol.46Issue(5)：42-47,6.DOI:10.3969/j.issn.1005-9954.2018.05.009
带回热器的R1234yf热泵系统能量分析和(炯)分析
Energy and exergy analysis of R1234yf heat pump system with internal heat exchanger
摘要
Abstract
The introduction of internal heat exchanger can improve system performance in vapor compression system.Compared with R134a,refrigerant R1234yf has a lower global warming potential,and its environmental effect is more obvious.The energy balance equation and the exergy balance equation were established for R1234yf heat pump system.The effects of evaporation temperature,condensation temperature and superheat degree on the system coefficient of performance COP,heating capacity,exhaust temperature and system efficiency were analyzed and compared with R134a system.The results show that the performance of the two systems is similar,but the COP and the heating capacity of the R134a system are 1.39％-4.06％ and 0.53％-4.08％ higher than that of the R1234yf heat pump system,respectively,and the system efficiency is 2.03％-3.27％ higher than that of the R1234yf heat pump system.As the degree of superheat increases,the difference between the COP and the efficiency of the two systems are reducing.关键词
回热器/R1234yf/R134a/性能系数COP/(炯)分析Key words
internal heat exchanger/R1234yf/R134a/coefficient of performance COP/exergy analysis分类
能源科技引用本文复制引用
王洪利,张率华,阚德民..带回热器的R1234yf热泵系统能量分析和(炯)分析[J].化学工程,2018,46(5):42-47,6.基金项目
河北省自然科学基金资助项目(E2015209239) （E2015209239）
河北省教育厅基金项目(QN2017126) （QN2017126）
