Numerical analysis of a novel miniature Joule-Thomson cryocooler
In this paper, a novel miniature Joule-Thomson (J-T) cryocooler was proposed and its steady-state cooling characteristics were analyzed via CFD numerical simulation. The performance characteristics were assessed for nitrogen under different inlet pressure and temperature, as well as different orific...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-05-01
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| Series: | Case Studies in Thermal Engineering |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X23002058 |
| _version_ | 1797832707553624064 |
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| author | Zhicheng Pan Ruiping Zhang Xiaoyong Li Ling Wang Taihe Huang Xiaoqing Zhang Jianye Chen |
| author_facet | Zhicheng Pan Ruiping Zhang Xiaoyong Li Ling Wang Taihe Huang Xiaoqing Zhang Jianye Chen |
| author_sort | Zhicheng Pan |
| collection | DOAJ |
| description | In this paper, a novel miniature Joule-Thomson (J-T) cryocooler was proposed and its steady-state cooling characteristics were analyzed via CFD numerical simulation. The performance characteristics were assessed for nitrogen under different inlet pressure and temperature, as well as different orifice widths. The results have outlined the structural advantages of the cooler – its excellent cooling performance, small axial height and simple fabrication. Owing to the structural characteristics of the spiral channel and the centrifugal force and gas viscous force actions, the fluid formed vortexes and secondary flow on the axial shear plane. This improved the heat transfer between the incoming flow and backflow fluid. Therefore, the heat transfer increase will further reduce the cooler stable operating temperature, and the minimum temperature can reach 138.3 K when the inlet pressure is 10 MPa. Meanwhile, there is an optimal throttle orifice width δ value between 0.1 mm and 0.2 mm, the cryocooler can get maximum cooling capacity under minimum temperature. In addition, the inlet pressure increases with the decrease in the throttle orifice width and inlet temperature. The minimum cooler temperature is gradually reduced, extending the cooling duration time. On the other hand, should the minimum temperature and cooling duration time decrease, the mass flow rate will also increase. |
| first_indexed | 2024-04-09T14:13:18Z |
| format | Article |
| id | doaj.art-946b17a2986f4fe1af1a002d9912af87 |
| institution | Directory Open Access Journal |
| issn | 2214-157X |
| language | English |
| last_indexed | 2024-04-09T14:13:18Z |
| publishDate | 2023-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Thermal Engineering |
| spelling | doaj.art-946b17a2986f4fe1af1a002d9912af872023-05-06T04:37:47ZengElsevierCase Studies in Thermal Engineering2214-157X2023-05-0145102899Numerical analysis of a novel miniature Joule-Thomson cryocoolerZhicheng Pan0Ruiping Zhang1Xiaoyong Li2Ling Wang3Taihe Huang4Xiaoqing Zhang5Jianye Chen6School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan, 430074, ChinaShanghai Institute of Space Propulsion, Shanghai, 201112, ChinaWuhan Globe Sensor Technology Co, Ltd, Wuhan, 430074, ChinaWuhan Globe Sensor Technology Co, Ltd, Wuhan, 430074, ChinaWuhan Globe Sensor Technology Co, Ltd, Wuhan, 430074, ChinaSchool of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan, 430074, ChinaSchool of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China; Corresponding author.In this paper, a novel miniature Joule-Thomson (J-T) cryocooler was proposed and its steady-state cooling characteristics were analyzed via CFD numerical simulation. The performance characteristics were assessed for nitrogen under different inlet pressure and temperature, as well as different orifice widths. The results have outlined the structural advantages of the cooler – its excellent cooling performance, small axial height and simple fabrication. Owing to the structural characteristics of the spiral channel and the centrifugal force and gas viscous force actions, the fluid formed vortexes and secondary flow on the axial shear plane. This improved the heat transfer between the incoming flow and backflow fluid. Therefore, the heat transfer increase will further reduce the cooler stable operating temperature, and the minimum temperature can reach 138.3 K when the inlet pressure is 10 MPa. Meanwhile, there is an optimal throttle orifice width δ value between 0.1 mm and 0.2 mm, the cryocooler can get maximum cooling capacity under minimum temperature. In addition, the inlet pressure increases with the decrease in the throttle orifice width and inlet temperature. The minimum cooler temperature is gradually reduced, extending the cooling duration time. On the other hand, should the minimum temperature and cooling duration time decrease, the mass flow rate will also increase.http://www.sciencedirect.com/science/article/pii/S2214157X23002058Joule-Thomson throttle coolingNumerical simulationPlate heat exchanger |
| spellingShingle | Zhicheng Pan Ruiping Zhang Xiaoyong Li Ling Wang Taihe Huang Xiaoqing Zhang Jianye Chen Numerical analysis of a novel miniature Joule-Thomson cryocooler Case Studies in Thermal Engineering Joule-Thomson throttle cooling Numerical simulation Plate heat exchanger |
| title | Numerical analysis of a novel miniature Joule-Thomson cryocooler |
| title_full | Numerical analysis of a novel miniature Joule-Thomson cryocooler |
| title_fullStr | Numerical analysis of a novel miniature Joule-Thomson cryocooler |
| title_full_unstemmed | Numerical analysis of a novel miniature Joule-Thomson cryocooler |
| title_short | Numerical analysis of a novel miniature Joule-Thomson cryocooler |
| title_sort | numerical analysis of a novel miniature joule thomson cryocooler |
| topic | Joule-Thomson throttle cooling Numerical simulation Plate heat exchanger |
| url | http://www.sciencedirect.com/science/article/pii/S2214157X23002058 |
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