Experimental Investigation on Pressure Drops of Purge Gas Helium in Packed Pebble Beds for Nuclear Fusion Blanket
The flow characteristics of purge gas helium in the pebble bed of the tritium breeding blanket are important in analyzing the tritium purging process and optimizing the design of the solid breeder blanket. Therefore, the flow characteristics of helium gas in randomly packed pebble beds are investiga...
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| Format: | Article |
| Language: | English |
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MDPI AG
2024-03-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/17/6/1309 |
| _version_ | 1797241284170088448 |
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| author | Hao Cheng Baoping Gong Bing Zhou Juemin Yan Long Wang Long Zhang Yongjin Feng Xiaoyu Wang |
| author_facet | Hao Cheng Baoping Gong Bing Zhou Juemin Yan Long Wang Long Zhang Yongjin Feng Xiaoyu Wang |
| author_sort | Hao Cheng |
| collection | DOAJ |
| description | The flow characteristics of purge gas helium in the pebble bed of the tritium breeding blanket are important in analyzing the tritium purging process and optimizing the design of the solid breeder blanket. Therefore, the flow characteristics of helium gas in randomly packed pebble beds are investigated experimentally with a focus on the analysis of the pressure loss distribution. The results show that gas velocity, bed dimension, and pebble diameters have an obvious influence on the helium flow characteristics in pebble beds. With the increase in the inlet helium gas velocity, the pressure drop gradient of helium in the pebble bed gradually increased. With increases in the pebble bed dimension, the pressure drop gradient of helium in the pebble bed gradually increased. With the increase in the pebble diameter, the pressure drop gradient gradually decreased. In addition, the effect of temperature on the pressure drop of helium in the pebble bed was also preliminarily investigated. The pressure drop gradient of the helium through the pebble bed obviously increased with the increase in the helium and the bed temperature. The experimentally obtained pressure loss characteristics can be used for the validation of the simulation of a blanket pebble bed and as input parameters in the thermo-hydraulic analysis of solid-tritium breeder blankets. |
| first_indexed | 2024-04-24T18:20:53Z |
| format | Article |
| id | doaj.art-048430fb0460403e927b2862d7791e94 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-24T18:20:53Z |
| publishDate | 2024-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-048430fb0460403e927b2862d7791e942024-03-27T13:35:24ZengMDPI AGEnergies1996-10732024-03-01176130910.3390/en17061309Experimental Investigation on Pressure Drops of Purge Gas Helium in Packed Pebble Beds for Nuclear Fusion BlanketHao Cheng0Baoping Gong1Bing Zhou2Juemin Yan3Long Wang4Long Zhang5Yongjin Feng6Xiaoyu Wang7Southwestern Institute of Physics, Chengdu 610041, ChinaSouthwestern Institute of Physics, Chengdu 610041, ChinaSouthwestern Institute of Physics, Chengdu 610041, ChinaSouthwestern Institute of Physics, Chengdu 610041, ChinaSouthwestern Institute of Physics, Chengdu 610041, ChinaSouthwestern Institute of Physics, Chengdu 610041, ChinaNuclear Power Institute of China, Chengdu 610041, ChinaSouthwestern Institute of Physics, Chengdu 610041, ChinaThe flow characteristics of purge gas helium in the pebble bed of the tritium breeding blanket are important in analyzing the tritium purging process and optimizing the design of the solid breeder blanket. Therefore, the flow characteristics of helium gas in randomly packed pebble beds are investigated experimentally with a focus on the analysis of the pressure loss distribution. The results show that gas velocity, bed dimension, and pebble diameters have an obvious influence on the helium flow characteristics in pebble beds. With the increase in the inlet helium gas velocity, the pressure drop gradient of helium in the pebble bed gradually increased. With increases in the pebble bed dimension, the pressure drop gradient of helium in the pebble bed gradually increased. With the increase in the pebble diameter, the pressure drop gradient gradually decreased. In addition, the effect of temperature on the pressure drop of helium in the pebble bed was also preliminarily investigated. The pressure drop gradient of the helium through the pebble bed obviously increased with the increase in the helium and the bed temperature. The experimentally obtained pressure loss characteristics can be used for the validation of the simulation of a blanket pebble bed and as input parameters in the thermo-hydraulic analysis of solid-tritium breeder blankets.https://www.mdpi.com/1996-1073/17/6/1309pressure dropsflow resistanceheliumpebble bedpacking factor |
| spellingShingle | Hao Cheng Baoping Gong Bing Zhou Juemin Yan Long Wang Long Zhang Yongjin Feng Xiaoyu Wang Experimental Investigation on Pressure Drops of Purge Gas Helium in Packed Pebble Beds for Nuclear Fusion Blanket Energies pressure drops flow resistance helium pebble bed packing factor |
| title | Experimental Investigation on Pressure Drops of Purge Gas Helium in Packed Pebble Beds for Nuclear Fusion Blanket |
| title_full | Experimental Investigation on Pressure Drops of Purge Gas Helium in Packed Pebble Beds for Nuclear Fusion Blanket |
| title_fullStr | Experimental Investigation on Pressure Drops of Purge Gas Helium in Packed Pebble Beds for Nuclear Fusion Blanket |
| title_full_unstemmed | Experimental Investigation on Pressure Drops of Purge Gas Helium in Packed Pebble Beds for Nuclear Fusion Blanket |
| title_short | Experimental Investigation on Pressure Drops of Purge Gas Helium in Packed Pebble Beds for Nuclear Fusion Blanket |
| title_sort | experimental investigation on pressure drops of purge gas helium in packed pebble beds for nuclear fusion blanket |
| topic | pressure drops flow resistance helium pebble bed packing factor |
| url | https://www.mdpi.com/1996-1073/17/6/1309 |
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