龙建佑,朱冬生,陈礼
LONG Jian-you1,2,ZHU Dong-sheng1

• 1:华南理工大学
• 2:华南理工大学
• 3:顺德职业技术学院 广东广州510640
• 4:顺德职业技术学院

摘要(Abstract)：

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%。用仿真模型研究了采用非共沸环保混合制冷剂(R744/R717)自然复叠制冷-40℃低温冷柜的性能,分析了CO2浓度、冷凝器出口温度及压缩机排气压力对制冷系统COP的影响。
The steady-state model of autocascade refrigeration system was built.The average error between the simulation results and experimental data was less than ±5%.The performance of-40℃ freezer with autocascade refrigeration system using zeotropic refrigerant mixture of R744/R717 was investigated.The effects on COP of the concentration of R744,the outlet refrigerant temperature of condenser and the outlet refrigerant pressure of compressor were analyzed.

关键词(KeyWords)： 自然复叠制冷;低温;混合工质;仿真
autocascade refrigeration;low temperature;refrigerant mixture;simulation

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(No20346001);; 广东省自然科学基金重点项目(04015950);; 广东省科技计划项目(2004A10702006)

作者(Author): 龙建佑,朱冬生,陈礼
LONG Jian-you1,2,ZHU Dong-sheng1

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