Effect of Header Configuration on Refrigerant Distribution in Parallel Flow Microchannel Evaporators

doi:10.1007/s12204-019-2068-4

Journal of Shanghai Jiao Tong University (Science) ›› 2019, Vol. 24 ›› Issue (3): 273-280.doi: 10.1007/s12204-019-2068-4

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Effect of Header Configuration on Refrigerant Distribution in Parallel Flow Microchannel Evaporators

YU Dengjia (俞登佳), LIU Jinwei (刘金伟), Lü Hongbin (吕鸿斌), SHI Junye (施骏业), YOU Dian (游典), CHEN Jiangping* (陈江平)

(1. Institute of Refrigeration and Cryogenics, Shanghai Jiao Tong University, Shanghai 200240, China; 2. Shanghai High Efficiency Cooling System Research Center, Shanghai Yinlun Heat Exchange System Co., Ltd., Shanghai 201414, China; 3. Chongqing Changan Automobile Co., Ltd., Chongqing 404100, China)

出版日期:2019-06-01 发布日期:2019-05-29
通讯作者: CHEN Jiangping* (陈江平) E-mail:jpchen sjtu@163.com

Effect of Header Configuration on Refrigerant Distribution in Parallel Flow Microchannel Evaporators

YU Dengjia (俞登佳), LIU Jinwei (刘金伟), Lü Hongbin (吕鸿斌), SHI Junye (施骏业), YOU Dian (游典), CHEN Jiangping* (陈江平)

(1. Institute of Refrigeration and Cryogenics, Shanghai Jiao Tong University, Shanghai 200240, China; 2. Shanghai High Efficiency Cooling System Research Center, Shanghai Yinlun Heat Exchange System Co., Ltd., Shanghai 201414, China; 3. Chongqing Changan Automobile Co., Ltd., Chongqing 404100, China)

Online:2019-06-01 Published:2019-05-29
Contact: CHEN Jiangping* (陈江平) E-mail:jpchen sjtu@163.com

摘要/Abstract

摘要： The refrigerant flow distribution in the parallel flow microchannel evaporators is experimentally investigated to study the effect of header configuration. Six different configurations are tested in the same evaporator by installing insertion device and partition plate in the header to ensure the consistency of the other structure parameters. The results show that the uniformity of refrigerant flow distribution and the heat transfer rate are greatly improved by reducing the sectional area of header. The heat transfer rate can increase by 67.93% by reducing the sectional area of both inlet and outlet headers. The uniformity of refrigerant flow distribution and the heat transfer rate become worse after installing the partition plate in the insertion devices and changing the inner structure of the header further.

关键词: refrigerant distribution, header, microchannel evaporator, two-phase flow

Abstract: The refrigerant flow distribution in the parallel flow microchannel evaporators is experimentally investigated to study the effect of header configuration. Six different configurations are tested in the same evaporator by installing insertion device and partition plate in the header to ensure the consistency of the other structure parameters. The results show that the uniformity of refrigerant flow distribution and the heat transfer rate are greatly improved by reducing the sectional area of header. The heat transfer rate can increase by 67.93% by reducing the sectional area of both inlet and outlet headers. The uniformity of refrigerant flow distribution and the heat transfer rate become worse after installing the partition plate in the insertion devices and changing the inner structure of the header further.

Key words: refrigerant distribution, header, microchannel evaporator, two-phase flow

中图分类号:

TK 01

YU Dengjia (俞登佳), LIU Jinwei (刘金伟), Lü Hongbin (吕鸿斌), SHI Junye (施骏业), YOU Dian . Effect of Header Configuration on Refrigerant Distribution in Parallel Flow Microchannel Evaporators[J]. Journal of Shanghai Jiao Tong University (Science), 2019, 24(3): 273-280.

YU Dengjia (俞登佳), LIU Jinwei (刘金伟), Lü Hongbin (吕鸿斌), SHI Junye (施骏业), YOU Dian (游典), CHEN Jiangping* (陈江平). Effect of Header Configuration on Refrigerant Distribution in Parallel Flow Microchannel Evaporators[J]. Journal of Shanghai Jiao Tong University (Science), 2019, 24(3): 273-280.

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Effect of Header Configuration on Refrigerant Distribution in Parallel Flow Microchannel Evaporators

Effect of Header Configuration on Refrigerant Distribution in Parallel Flow Microchannel Evaporators

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