Theoretical and numerical simulation study on heat and mass transfer mechanism of GM refrigerator cryopump
The cryopump relies on the cryocondensation mechanism to create a clean, high-vacuum environment. Studying the heat and mass transfer mechanism and enhancing the performance of the cryopump are important because its heat and mass transfer performance directly affects the quality of the vacuum enviro...
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| Format: | Article |
| Language: | English |
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AIP Publishing LLC
2024-12-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/5.0241400 |
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| author | Jiaqi Lang Xiuping Zhang Rujin Wang |
| author_facet | Jiaqi Lang Xiuping Zhang Rujin Wang |
| author_sort | Jiaqi Lang |
| collection | DOAJ |
| description | The cryopump relies on the cryocondensation mechanism to create a clean, high-vacuum environment. Studying the heat and mass transfer mechanism and enhancing the performance of the cryopump are important because its heat and mass transfer performance directly affects the quality of the vacuum environment. This study proposes a systematic method for analyzing the mechanism influencing spatial changes, particle motion characteristics, and heat and mass transfer. This study identifies the key factors affecting the heat and mass transfer and investigates the influence of various factors in the vacuum chamber, liquid-nitrogen cooling area, and liquid-helium cooling area on the mass transfer performance. Next, the main source of heat load and the influence of spatial layout on the heat load are determined and a method for reducing the heat load is introduced. A cryopump designed based on these conclusions delivered a 33% higher pumping speed, a 35% shorter cooling time, and a better vacuum performance than the traditional cryopump in a simulation analysis. This study can provide guidance for the development of advanced cryopumps and instruct the design and operation of cryovacuum systems. |
| format | Article |
| id | doaj-art-41d0f2b5e2b34663bcbb5c46714340f9 |
| institution | DOAJ |
| issn | 2158-3226 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | AIP Advances |
| spelling | doaj-art-41d0f2b5e2b34663bcbb5c46714340f92025-08-20T02:56:31ZengAIP Publishing LLCAIP Advances2158-32262024-12-011412125031125031-1410.1063/5.0241400Theoretical and numerical simulation study on heat and mass transfer mechanism of GM refrigerator cryopumpJiaqi Lang0Xiuping Zhang1Rujin Wang2Hefei General Machinery Research Institute Co., Ltd., Hefei 230000, ChinaHefei General Machinery Research Institute Co., Ltd., Hefei 230000, ChinaHefei General Machinery Research Institute Co., Ltd., Hefei 230000, ChinaThe cryopump relies on the cryocondensation mechanism to create a clean, high-vacuum environment. Studying the heat and mass transfer mechanism and enhancing the performance of the cryopump are important because its heat and mass transfer performance directly affects the quality of the vacuum environment. This study proposes a systematic method for analyzing the mechanism influencing spatial changes, particle motion characteristics, and heat and mass transfer. This study identifies the key factors affecting the heat and mass transfer and investigates the influence of various factors in the vacuum chamber, liquid-nitrogen cooling area, and liquid-helium cooling area on the mass transfer performance. Next, the main source of heat load and the influence of spatial layout on the heat load are determined and a method for reducing the heat load is introduced. A cryopump designed based on these conclusions delivered a 33% higher pumping speed, a 35% shorter cooling time, and a better vacuum performance than the traditional cryopump in a simulation analysis. This study can provide guidance for the development of advanced cryopumps and instruct the design and operation of cryovacuum systems.http://dx.doi.org/10.1063/5.0241400 |
| spellingShingle | Jiaqi Lang Xiuping Zhang Rujin Wang Theoretical and numerical simulation study on heat and mass transfer mechanism of GM refrigerator cryopump AIP Advances |
| title | Theoretical and numerical simulation study on heat and mass transfer mechanism of GM refrigerator cryopump |
| title_full | Theoretical and numerical simulation study on heat and mass transfer mechanism of GM refrigerator cryopump |
| title_fullStr | Theoretical and numerical simulation study on heat and mass transfer mechanism of GM refrigerator cryopump |
| title_full_unstemmed | Theoretical and numerical simulation study on heat and mass transfer mechanism of GM refrigerator cryopump |
| title_short | Theoretical and numerical simulation study on heat and mass transfer mechanism of GM refrigerator cryopump |
| title_sort | theoretical and numerical simulation study on heat and mass transfer mechanism of gm refrigerator cryopump |
| url | http://dx.doi.org/10.1063/5.0241400 |
| work_keys_str_mv | AT jiaqilang theoreticalandnumericalsimulationstudyonheatandmasstransfermechanismofgmrefrigeratorcryopump AT xiupingzhang theoreticalandnumericalsimulationstudyonheatandmasstransfermechanismofgmrefrigeratorcryopump AT rujinwang theoreticalandnumericalsimulationstudyonheatandmasstransfermechanismofgmrefrigeratorcryopump |