小型CO_2制冷系统换热器的设计及应用  

Design and Application of Heat Exchanger in a Small CO_2 Refrigeration System

作　　者：王栋[1,2] 陶乐仁[1] 周璐璐[2] 李蒙 

机构地区：[1]上海理工大学,上海200093 [2]安徽工业大学,安徽马鞍山243002 [3]丹佛斯(上海)自动控制有限公司,上海201103

出　　处：《流体机械》2014年第5期57-60,共4页Fluid Machinery

基　　金：高等学校博士学科点专项科研基金项目(博导类联合)(20103120110002);地方高校国家级大学生创新训练计划项目

摘　　要：为了设计一套应用于展示柜的小型CO2制冷系统,利用整个系统的循环计算结果,得出系统换热器的负荷,以气体冷却器为例,进行了详细的理论计算。以理论计算的结果为依据,定制了一套气体冷却器、蒸发器及回热器,在相同的条件下,测试了本系统的性能,结果显示,系统能够满足要求,将本系统与R134a制冷系统进行对比,结果显示,本系统的性能更优,将本系统与国外同类产品进行对比,结果显示,本系统的性能稍差,测试结果表明了本系统的换热器理论设计完全可行。In order to design a small CO2 refrigeration system applied in display cabinet,the calculation results of the cycle of the whole system is used to get the load of heat exchanger.Then the detailed theoretical calculation is carried out at the gas cooler as an example.According to the results of theoretical calculation,gas cooler,evaporator and internal heat exchanger are make. Under the same conditions,the performance of the system is tested,the result shows that it can meet the requirement.Compared with R134a refrigeration system and foreign similar products,the performance of the system is better than R134a and inferior to the foreign products.The test results show that the theoretical design of the heat exchanger is fully feasible.

关 键 词：换热器 CO2 制冷系统 理论设计 性能 

分 类 号：TH12[机械工程—机械设计及理论] TB657.9[一般工业技术—制冷工程]