自然复叠制冷系统的仿真与优化  

Simulation and Optimization of Autocascade Refrigeration System

作　　者：龙建佑[1] 朱冬生[1] 陈礼[2] 

机构地区：[1]华南理工大学化工与能源学院,广州510641 [2]顺德职业技术学院

出　　处：《制冷与空调（四川）》2006年第2期5-9,共5页Refrigeration and Air Conditioning

基　　金：教育部优秀青年教师资助计划项目;高等学校博士学科点专项科研基金英文缩写"SRFDP";广东省自然科学基金(No.011584);广州市科技计划项目

摘　　要：建立了自然复叠制冷系统稳态仿真模型,该模型用实验数据进行了验证,误差小于±5%。研究了非共沸环保混合制冷剂(R744/R717)的温度滑移。完成了采用非共沸环保混合制冷剂(R744/R717)-40℃低温冷柜的仿真与优化设计。结果表明:采用非共沸环保混合制冷剂(R744/R717)-40℃低温冷柜自然复叠制冷系统在保持压缩比小于8的同时能获得COP值高达0.71,是一个有发展前途的制冷系统。The steady-state model of Autocascade Refrigeration System was built. The average error between the simulation results and experimental data is less than ±5%. The temperature glide of zeotropic refrigerant mixture of R744/R717 was studied. The design of a -40℃ freezer using zeotropic refrigerant mixture of R744/R717 was carried out. It is shown that the -40℃ freezer using zeotropic refrigerant mixture of R744/R717 has high COP of 0.71 while keeping the compressing ratio less than 8. It is a promising refrigeration system.

关 键 词：自然复叠制冷系统 制冷 低温 混合工质 仿真 

分 类 号：TB657[一般工业技术—制冷工程] TB612