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《Journal of Chemical Industry and Engineering(China)》 2002-08
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MODELING AND PERFORMANCE ANALYSIS OF CARBONDIOXIDE MICROCHANNEL GAS COOLER

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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