Experimental Study on Multilayer Rectangular Micro-channel Joule-Thomson Cryocooler with Nitrogen
A multilayer micro-channel Joule-Thomson (J-T) cryocooler was designed by combining several layers of rectangular micro-channels with a coke soup cooler. The heat recovery section was constructed using three layers of high- and low-voltage rectangular channels. Experiments were conducted using nitro...
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Journal of Refrigeration Magazines Agency Co., Ltd.
2017-01-01
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| Series: | Zhileng xuebao |
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| Online Access: | http://www.zhilengxuebao.com/thesisDetails#10.3969/j.issn.0253-4339.2017.05.093 |
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| author | Geng Hui Cui Xiaoyu Wang Wenqing Weng Jianhua |
| author_facet | Geng Hui Cui Xiaoyu Wang Wenqing Weng Jianhua |
| author_sort | Geng Hui |
| collection | DOAJ |
| description | A multilayer micro-channel Joule-Thomson (J-T) cryocooler was designed by combining several layers of rectangular micro-channels with a coke soup cooler. The heat recovery section was constructed using three layers of high- and low-voltage rectangular channels. Experiments were conducted using nitrogen as a refrigerant with inlet pressures ranging from 4 to 8 MPa, and the temperatures of each of the measuring points of the multi-layer microchannels in the J-T cryocooler were collected. The cooling characteristics of nitrogen in the various stages of the refrigeration system were analyzed, and the experimental results obtained when nitrogen and argon were used in the J-T cryocooler were compared. The results show that, when the inlet pressure is 4-8 MPa, a lower temperature for the nitrogen cold end with increasing pressure corresponds to a shorter time period to reach a stable cold-end temperature. When the inlet pressure is 8 MPa, the cold-end temperature reaches 1.7 ℃ at approximately 200 s. The argon cold-end temperature is lower than that of the nitrogen at the same inlet pressure; however, the time required for the nitrogen to reach the cold-end temperature is shorter than that for the argon. When the inlet pressure is 7 MPa, the temperature of the cold-end argon gas occurs approximately 450 s ahead of time. Further, the temperature drops for nitrogen at an 8-MPA inlet pressure and argon at a 4-5 MPa inlet pressure are similar. In addition, the nitrogen cooling time is shorter. Thus, the use of nitrogen instead of argon can reduce the cooling costs. |
| format | Article |
| id | doaj-art-76fd2f7a72ee44deabb79362cc4b682e |
| institution | DOAJ |
| issn | 0253-4339 |
| language | zho |
| publishDate | 2017-01-01 |
| publisher | Journal of Refrigeration Magazines Agency Co., Ltd. |
| record_format | Article |
| series | Zhileng xuebao |
| spelling | doaj-art-76fd2f7a72ee44deabb79362cc4b682e2025-08-20T02:47:17ZzhoJournal of Refrigeration Magazines Agency Co., Ltd.Zhileng xuebao0253-43392017-01-013866511925Experimental Study on Multilayer Rectangular Micro-channel Joule-Thomson Cryocooler with NitrogenGeng HuiCui XiaoyuWang WenqingWeng JianhuaA multilayer micro-channel Joule-Thomson (J-T) cryocooler was designed by combining several layers of rectangular micro-channels with a coke soup cooler. The heat recovery section was constructed using three layers of high- and low-voltage rectangular channels. Experiments were conducted using nitrogen as a refrigerant with inlet pressures ranging from 4 to 8 MPa, and the temperatures of each of the measuring points of the multi-layer microchannels in the J-T cryocooler were collected. The cooling characteristics of nitrogen in the various stages of the refrigeration system were analyzed, and the experimental results obtained when nitrogen and argon were used in the J-T cryocooler were compared. The results show that, when the inlet pressure is 4-8 MPa, a lower temperature for the nitrogen cold end with increasing pressure corresponds to a shorter time period to reach a stable cold-end temperature. When the inlet pressure is 8 MPa, the cold-end temperature reaches 1.7 ℃ at approximately 200 s. The argon cold-end temperature is lower than that of the nitrogen at the same inlet pressure; however, the time required for the nitrogen to reach the cold-end temperature is shorter than that for the argon. When the inlet pressure is 7 MPa, the temperature of the cold-end argon gas occurs approximately 450 s ahead of time. Further, the temperature drops for nitrogen at an 8-MPA inlet pressure and argon at a 4-5 MPa inlet pressure are similar. In addition, the nitrogen cooling time is shorter. Thus, the use of nitrogen instead of argon can reduce the cooling costs.http://www.zhilengxuebao.com/thesisDetails#10.3969/j.issn.0253-4339.2017.05.093Joule-Thomson effectrectangle micro channelvelocity of temperature falling |
| spellingShingle | Geng Hui Cui Xiaoyu Wang Wenqing Weng Jianhua Experimental Study on Multilayer Rectangular Micro-channel Joule-Thomson Cryocooler with Nitrogen Zhileng xuebao Joule-Thomson effect rectangle micro channel velocity of temperature falling |
| title | Experimental Study on Multilayer Rectangular Micro-channel Joule-Thomson Cryocooler with Nitrogen |
| title_full | Experimental Study on Multilayer Rectangular Micro-channel Joule-Thomson Cryocooler with Nitrogen |
| title_fullStr | Experimental Study on Multilayer Rectangular Micro-channel Joule-Thomson Cryocooler with Nitrogen |
| title_full_unstemmed | Experimental Study on Multilayer Rectangular Micro-channel Joule-Thomson Cryocooler with Nitrogen |
| title_short | Experimental Study on Multilayer Rectangular Micro-channel Joule-Thomson Cryocooler with Nitrogen |
| title_sort | experimental study on multilayer rectangular micro channel joule thomson cryocooler with nitrogen |
| topic | Joule-Thomson effect rectangle micro channel velocity of temperature falling |
| url | http://www.zhilengxuebao.com/thesisDetails#10.3969/j.issn.0253-4339.2017.05.093 |
| work_keys_str_mv | AT genghui experimentalstudyonmultilayerrectangularmicrochanneljoulethomsoncryocoolerwithnitrogen AT cuixiaoyu experimentalstudyonmultilayerrectangularmicrochanneljoulethomsoncryocoolerwithnitrogen AT wangwenqing experimentalstudyonmultilayerrectangularmicrochanneljoulethomsoncryocoolerwithnitrogen AT wengjianhua experimentalstudyonmultilayerrectangularmicrochanneljoulethomsoncryocoolerwithnitrogen |