摘要
就台山中微子探测器(JUNO-TAO)所需的低温恒温器进行设计,该恒温器高2 m、φ2 m、工作温度-50℃、内部φ1.8 m的球体范围温差±0.5℃,恒温器以低温硅油为载冷剂、制冷机为冷源,采用单层不锈钢罐体和聚氨酯复合发泡绝热技术。首先建立以φ1.8 m球体为主要组成部分的物理模型,运用Steady-State Thermal和Fluent软件模拟计算,分别得到液体闪烁体(LS)处于20℃、-30℃和-50℃时球体范围内的温度分布情况,分析结果可得液闪处于-50℃的方案运行简单,安全可靠。
Silicon photomultiplier of Taishan Antineutrino Observatory(JUNO-TAO) requires a cryostat, whose height is 2 m, and the diameter is 2 m, operating temperature is-50 ℃. Temperature difference range of the internal sphere with a diameter of 1.8 m is ±0.5 ℃. The cryostat uses cryogenic silicone oil as the coolant and the refrigerator as the cold source. It adopts single-layer stainless steel tank and polyurethane composite foam insulation technology. Physical model of 1.8 m sphere was established, and the Steady-State Thermal and Fluent software were used to simulated. Then the temperature distribution of the liquid scintillator(LS) in the range of sphere at 20 ℃,-30 ℃and-50 ℃. The results show that the solution with LS at-50 ℃ is simple, safe and reliable.
作者
孙丽婷
岳献芳
曹俊
王立
谢宗泰
刘旭洋
朱自安
王美芬
Sun Liting;Yue Xianfang;Cao Jun;Wang Li;Xie Zongtai;Liu Xuyang;Zhu Zian;Wang Meifeng(School of Energy and Environment, University of Science and Technology Beijing, Beijing 100083, China;Institute of High Energy Physics, Chinese Academy of Science, Beijing 100049, China;University of Chinese Academy of Sciences, Beijing 100049, China)
出处
《低温工程》
CAS
CSCD
北大核心
2019年第5期70-74,共5页
Cryogenics
基金
中国科学院战略性先导科技专项(XDA10000000)
关键词
低温恒温器
稳态工况
温度场分布
cryostat steady
state working condition
temperature field distribution