液氧/液甲烷零蒸发共底贮存系统冷屏热均匀性能分析
The Thermal Uniformity Performance Analysis of the Cold Shield in the LOX/LCH4 Common Bulkhead and Zero Boil-off Storage System
张武杰 1许安易 2蒋文兵 2孙培杰 2李鹏 2苗蕊娇 1黄永华1
作者信息
- 1. 上海交通大学制冷与低温工程研究所,上海 200240
- 2. 上海宇航系统工程研究所,上海 201108
- 折叠
摘要
共底贮箱是低温推进剂贮箱的理想形式之一,其两侧低温推进剂的无损贮存是亟待解决的关键技术.本文结合已搭建的液氧/液甲烷零蒸发共底贮存实验装置,建立了零蒸发共底贮存系统冷屏仿真模型.针对非稳态流动传热过程中温度的位变与时变特性,提出了温度离散系数,其相比不均匀系数更适用于评价非稳态流动传热过程中冷屏的热均匀特性.结果表明,采用蛇形盘管的冷屏在非稳态过程中具有良好的热均匀性,冷屏最大温度离散系数为3.85％.
Abstract
The common bulkhead tank is one of the most efficient forms for cryogenic propellants,and the non-loss storage technology in the common bulkhead tank is the key issue.A cold shield model designed for the common bulkhead and zero boil-off storage is built based on the liquid oxy-gen/liquid methane common bulkhead and zero boil-off storage experiment system.The coefficient of temperature variation that considers the location variation characteristic and time variation charac-teristic of the temperature during the transient heat transfer and flow process is proposed.Compared with the nonuniformity coefficient,the coefficient of temperature variation is more suitable to eval-uate the thermal uniformity of the cold shield.The results show that the cold shield with coiler performs an excellent thermal uniformity,the maximum coefficient of temperature variation of the cold shield is 3.85％.
关键词
低温推进剂/共底贮箱/热均匀性/温度离散系数Key words
cryogenic propellants/common bulkhead tank/thermal uniformity/coefficient of tem-perature variation引用本文复制引用
出版年
2024
NETL
NSTL
万方数据