太阳能喷射与压缩复合制冷系统的火用分析  

Exergy Analysis of a Solar Ejector-Compression Combined Cooling System

作　　者：白惠峰[1] 田琦[1] 王增长[1] 

机构地区：[1]太原理工大学环境科学与工程学院,山西太原030024

出　　处：《中北大学学报（自然科学版）》2008年第6期558-562,共5页Journal of North University of China(Natural Science Edition)

基　　金：山西省自然科学基金资助项目(2007011065);山西省教育厅高新技术项目(2007305);太原市科委资助项目

摘　　要：火用分析是优化热力系统性能的一种有效工具.推导了太阳能喷射与压缩复合制冷系统各部件火用损失计算公式,分析了影响系统火用损失的主要部件及因素.结果表明,太阳能喷射与压缩复合制冷系统各装置中,集热器火用损失最大,其次是冷凝器和喷射器.在几种典型工况下,三者占系统总火用损失的73.28%.在系统制冷量、集热温度、蒸发温度和冷凝温度不变时,随着中间冷却器蒸发温度的升高,系统火用损失逐渐减少.Exergy analysis is used as a tool to analyze the performance of a refrigeration cycle. Exergy destruction calculation formulas of parts of a solar ejector-compression combined cooling system are deduced, and major factors working on the exergy destruction of the system are analyzed. The exergy analysis results of the cooling system show that the solar collector has the largest exergy destruction in the total exergy destruction, next is the condenser, and the third is the ejector. For some typical operating conditions, the sum of the exergy destruction of three parts is 73.28% of the total exergy destruction. When the system cooing capacity, solar collector temperature, evaporation temperature and condensation temperature keep constant, the system exergy destruction reduces with the temperature of the inter-cooling set increasing.

关 键 词：太阳能 喷射 压缩 制冷 [火用]分析 

分 类 号：TB65[一般工业技术—制冷工程] TQ038[化学工程]