Comparative Research on Ventilation Characteristics of Scattering and Sample Room from Chinese Spallation Neutron Source

Shengqiang Wei, Yiping Lu, Wei Yang, Yubin Ke, Haibiao Zheng, Lingbo Zhu, Jianfei Tong, Longwei Mei, Shinian Fu and Congju Yao
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Shengqiang Wei: Department of Mechanical and Power Engineering, Harbin University of Science and Technology, Harbin 150080, China
Yiping Lu: Department of Mechanical and Power Engineering, Harbin University of Science and Technology, Harbin 150080, China
Wei Yang: Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
Yubin Ke: Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
Haibiao Zheng: Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
Lingbo Zhu: Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
Jianfei Tong: Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
Longwei Mei: Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
Shinian Fu: Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
Congju Yao: Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China

Energies, 2022, vol. 15, issue 11, 1-16

Abstract: Ventilation design of the scattering room and sample room in the Chinese Spallation Neutron Source (CSNS) is of great significance to maintain good indoor air quality and ensure the health of radiation workers. Based on the computational fluid dynamics (CFD) theory, the three-dimensional models of the scattering and sample rooms were established and fourteen layout schemes were simulated. Subsequently, the best schemes were selected among three typical layout schemes. On this basis, the paper presents research about the influence of changing the height of the outlet on the ventilation quality. The results show that the trend of numerical simulation is consistent with experimental data, which verifies the reliability of the numerical method. The change of the exhaust port position has an apparent influence on indoor ventilation, which reduces the air age by 4–27%. When the position of the outlet descends 0.5 m, the air age decreases by 2–11%, and this study provides guidance and suggestions for the design of the scattering and sample rooms.

Keywords: computational fluid dynamics; scattering room; ventilating design; air age; non-uniformity coefficient (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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