摘要
针对深冷环路热管运行性能预测需求,基于组件内部工质分布、热力状态变化及流动传热特性,构建了具有辅回路的深冷环路热管瞬态数值模型,仿真分析了深冷环路热管在固定辅热载荷作用下的传热特性变化规律,对比实验结果验证了模型的可行性,得到了深冷环路热管稳态工作性能曲线和系统内部工质分布状态、热力学状态变化路径及系统压降等,指出文献关于液相回路必须具备足够过冷度的第三使役条件应正确表述为液相回路不能过热,即气、液两相共存的饱和状态同样满足第三使役条件的要求,并且更有利于系统的稳定运行。
To satisfy the needs of performance prediction of cryogenic loop heat pipes, a transient numerical model for cryogenic loop heat pipe with an auxiliary loop was constructed based on the working fluid distribution, thermal state variation, flow and heat transfer characteristic in key com-ponents of cryogenic loop heat pipes. The heat transfer performances with a fixed auxiliary heat load were simulated and analyzed. The simulation results were compared with that of the experiments to verify the reliability of the model. The distribution of the working fluid and its thermodynamic state, as well as the path of thermodynamic processes, were analyzed under the steady state operation. Ac-cording to the simulation results, it was pointed out that the correct statement of the third service-ability condition related to the liquid lines, which was usually expressed in the literature as that the working fluid should be sufficiently subcooled, was that the working fluid could not be superheated.It means that the coexistence of saturated liquid and vapor phases in liquid lines can also satisfy the requirements of the third serviceability condition and may be more conducive to the stable operation.
作者
何发龙
杜王芳
赵建福
陈跃勇
何江
张红星
苗建印
HE Falong1 , DU Wangfang1 , ZHAO Jianfu1, 3 , CHEN Yueyong2,4 , HE Jiang2,4 , ZHANG Hongxing2,4 , MIAO Jianyin2,4(1. CAS Key Laboratory of Microgravity, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China; 2. Beijing Key Laboratory of Space Thermal Control Technology, Beijing 100094, China;3. School of Engineering Science, University of the Chinese Academy of Sciences, Beijing 100049, China;4. Institute of Spacecraft System Engineering, China Academy of Space Technology, Beijing 100094, Chin)
出处
《载人航天》
CSCD
北大核心
2018年第4期512-519,共8页
Manned Spaceflight
基金
中国科学院前沿科学重点研究计划(QYZDY-SSW-JSC040)
关键词
深冷环路热管
数值仿真
传热性能
使役条件
cryogenic loop heat pipe
numerical simulation
heat transfer performance
the service-ability conditions
