一种改进型Einstein循环制冷机的[火用]分析.pdfVIP

第59卷 第4期 化 工 学 报 Vo1．59 No．4 2008年4月 Journal of Chemical Industry and Engineering (China) April 2008 一 种改进型Einstein循环制冷机的炯分析 王汝金，刘道平 (上海理工大学制冷技术研究所，上海 200093) 关键词：Einstein循环；吸收式制冷；炯分析；节能 中图分类号：TB 616 文献标识码：A 文章编号：0438—1157(2008)O4—0820--05 Exergy analysis of improved Einstein refrigeration cycle WANG Rujin，LIU Daoping (Institute of Refrigeration Technology，University of Shanghaifor Science 8L Technology，Shanghai 200093，China) Abstract：Einstein cycle is a kind of single—pressure absorption refrigerator，using —butane—ammonia—water as working fluids，driven by low grade heat source．The original cycle was improved，in which two solution heat exchangers were configured respectively before the generator and the evaporator to modify thermal performance of the refrigeration equipment．By using the exergy analysis method，the exergy losses of all thermal parts of the refrigerator were obtained，and the theoretical basis for improving design was given．The energy—saving places and the correlative further improvements were presented to minimize the exergy losses and optimize the whole refrigeration cycle．In addition，the generator and the condenser were the main parts where exergy losses existed． Key words：Einstein cycle；absorption refrigeration；exergy analysis；energy saving 品位能源进行驱动，具有节能、环保、安全可靠等 引 言 优点。在当前能源紧缺、电力供应紧张、环境问题 Einstein循 环制冷机是 由著名物 理学家 日益严峻的形势下，这种单压吸收式制冷技术再次 Einstein等u 于2O世纪3O年代对Baltzar Carl Von 引起了学术界的关注。自1995年以来，美国学者 Platen和Carl Georg Munters提出的扩散一吸收式 Samuel V Shelton的课题组针对该制冷循环开展了 制冷机进行改进后的一种制冷装置