中空玻璃微球低温液体球罐绝热性能研究  

Study on the adiabatic performance of cryogenic liquid spherical tank with insulating glass microspheres

作　　者：党战伟[1,2] 苏厚德 朱巧家[1,2] 缪平 雒淑娟 Dang Zhanwei;Su Houde;Zhu Qiaoja;Miao Ping;uo Shujuan(Lanpec Technologies Limited,Lanzhou 730070,China;Lanpec Technologies Limited,Shanghai 201518,China;Sinopec Engineering Co.,Limited,Guangzhou 510620,China)

机构地区：[1]甘肃蓝科石化高新装备股份有限公司,兰州730070 [2]上海蓝滨石化设备有限责任公司,上海201518 [3]中石化广州工程有限公司,广州510620

出　　处：《低温与超导》2024年第11期97-102,共6页Cryogenics and Superconductivity

基　　金：甘肃省科技重大专项计划项目(22ZD6GA026)资助。

摘　　要：中空玻璃微球因其较优的绝热性能、较低的维护成本被认为是适用于大型液氢球罐的绝热材料。由于相关实验数据的缺乏,本文利用建造的1 m3液氢试验球罐,在初始充装率为50%和90%的情况下进行液氮蒸发率测试,测得液氮静态蒸发率分别为2.19%和2.53%。由实验结果推算中空玻璃微球绝热层表观导热系数为1.19×10^(-3)W/(m·K),利用理论公式计算该值为1.85×10^(-3)W/(m·K)。预测了某25 m^(3)中空玻璃微球绝热液氢球罐的蒸发率为0.81%。Insulating glass microspheres were considered to be the thermal-insulating materials for large liquid hydrogen spherical tanks because of their excellent thermal-insulating performance and low maintenance cost. Based on a liqiud hydrogen spherical tank with 1 m~3 for test, while liquid nitrogen(LN_(2)) was filled to 50% and 80%, the static evaporation rates of LN_(2) were measured at 2.19% and 2.53% respectively. The apparent thermal conductivity of the insulation layer with the insulating glass microsphere is 1.19×10^(-3) W/(m·K) by experiment and 1.85×10^(-3) W/(m·K) by the theoretical formula. The evaporation rate of the liquid hydrogen tank with insulating glass microsphere and 25 m^(3)was predicted to be 0.81%.

关 键 词：低温液体储存 中空玻璃微球 蒸发率 表观导热系数 

分 类 号：TB658[一般工业技术—制冷工程]