Influences of mass flow rate on heat and mass transfer performances of water sublimator combined with fluid loop

作     者：Yuying WANG Jindong LI Xianwen NING Qi ZHONG Jianyin MIAO Lu WANG Wei LYU Chang LIU 

作者机构：Beijing Key Laboratory of Space Thermal Control TechnologyInstitute of Spacecraft System EngineeringChina Academy of Space Technology 

出 版 物：《Chinese Journal of Aeronautics》 (中国航空学报（英文版）)

年 卷 期：2019年第32卷第4期

页      面：888-894页

核心收录：

学科分类：08[工学] 082504[工学-人机与环境工程] 0825[工学-航空宇航科学与技术] 

基　　金：supports of the National Natural Science Foundation of China(No.11472040) the National Science Technology Major Project of China 

主　　题：Fluid loop Mass flow rate Sublimator Spacecraft Thermal control 

摘      要：For spacecraft working in vacuum environment, sublimator is an effective heat rejection approach to reject system s peak heat load, and supplement spacecraft radiation heat rejection. For a spacecraft active fluid loop thermal control system combined with sublimator, waste heat generated from multi-point distributed heat sources could be collected by the fluid loop efficiently. However, the heat and mass transfer performances of the sublimator combined with fluid loop have not been adequately studied in previous research, especially for the influences of the heat load. Since work fluid mass flow rate is the main factor affecting heat load of the fluid loop, this context experimentally studied influences of the fluid loop mass flow rate on sublimator start-up transient characteristics, including heat transfer performances, response time, and work stability. Results indicated that the fluid loop mass flow rate affected the sublimator heat and mass transfer performances obviously, but the heat rejection ability is not always increase with the increasing of the fluid loop mass flow rate. In addition, we obtained the condition to judge whether there is a positive correlation between heat rejection ability and fluid loop mass flow rate.