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《Journal of Chemical Industry and Engineering(China)》 2002-08
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HUANG Dongping,LIANG Zhenqian,DING Guoliang and ZHANG Chunlu(Institute of Refrigeration and Cryogenics Engineering,Shanghai Jiaotong University,Shanghai 200030,China)  
Microchannel gas cooler is an important component of transcritical carbon dioxid e refrigerating equipment,and of great significance to system performance. Howe ver,few investigations have been made on this new type of heat exchanger.A stea dy-state distributed-parameter model is established,in which distributed proper ties of both carbon dioxide and air are considered.Through comparing simulation re sults with experimental results from literatures of American Air Conditioning an d Refrigerating Center,the model is accepted with an error within 13%.Then this model is used for sensitivity analysis of gas cooler performance to its configu ration parameters,such as microchannel diameter,number of microchannels,numbe r of tubes,number of processes.According the simulation results,it is suggeste d that the microchannel diameter should be within 0.7 to 1?mm,and there should be 2 to 4 processes.
【Fund】: 教育部骨干教师计划;; 上海市青年科技启明星计划 (沪科 [99]第 2 5 2号 );; 上海交通大学科技基金资助项目
【CateGory Index】: TB65
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