1. 西安交通大学能源与动力工程学院,西安,710049
2. 兰州物理研究所真空低温技术与物理国家重点实验室,兰州,730000
网络首发:2009-08-10,
纸质出版:2009
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张周卫 1, 2, 厉彦忠 1, 等. 空间低温冷屏蔽系统及表面温度分布研究[J]. 西安交通大学学报, 2009,43(8):116-124.
Cryogenic Cold Shield System in Space with Surface Temperature Distribution[J]. 2009, 43(8): 116-124.
提出一种“空间冷屏蔽系统”模型
通过空间深冷剂的相变制冷可使空间飞行器表面温度低于100 K
30 min内使表面红外辐射强度低于0.5 W/m
2
; 进而建立三维气液分离储液模型
并对分层储液结构进行单元传热数值模拟
分析单元模型的不同传热边界条件
将换热经验关联式应用于稳态传热数值模拟过程
从而获得冷屏表面温度及热流随液位变化的分布规律; 然后建立单元实验模型并进行实验分析.模拟计算及实验结果表明:当分层储液高度小于100 mm时
实验温度梯度与数值模拟结果相似; 实验系统的表面温度在地面15 min以内、空间30 min以内可以满足低温红外辐射特征要求; 太阳能辐射强度和毛细材料对表面温度分布的均匀性及液氮维持时间有一定的影响.
A technique about spatial cold shield system with phase-change refrigeration by the cryogens is presented to lower the surface temperature of a spacecraft under 100 K
furthermore to lower the infrared radiation on the spacecraft under 0.5 W/m
2
in 30 minutes
then a 3-D layered reservoir model is established for the simulation of heat transfer. In this simulation process
the empirical equations are substituted to boundary conditions of stable heat-transfer relations to simulate the surface temperature and heat flux changing with the liquid level. Then an experimental unit model is constructed for process analysis. The simulation and experiment results show that the experimental temperature gradients are similar to the simulation results before the exhaustion of liquid nitrogen when liquid level of layered reservoir is less than 100 mm; surface tempe
rature of the system meets the requirement of infrared radiation in 15 min on the ground and 30 min in the space; solar radiation and capillary material influence the uniformity of surface temperature and holding time of liquid nitrogen to some degree.
赵庆荣,武松涛.EAST托卡马克装置主机装配工艺分析[J].机械设计与制造, 2008(3): 140-141.
ZHAO Qingrong, WU Songtao. The analysis of EAST tokamak device assembly technology [J]. Machinery Design & Manufacture, 2008(3): 140-141.
谢韩,王小明,廖子英.EAST托卡马克装置冷屏的真空要求与受热分析[J].真空与低温, 2006, 12(3): 157-161.
XIE Han, WANG Xiaoming, LIAO Ziying. The analysis of vacuum and heat load for thermal shield of EAST tokamak [J]. Vacuum and Cryogenics, 2006, 12(3): 157-161.
谢韩,廖子英.EAST托卡马克装置外冷屏的热负荷分析[J].低温与超导, 2004, 32(1): 59-61.
XIE Han, LIAO Ziying. Analysis of thermal load for EAST tokamak cryostat thermal shield design [J]. Cryogenics and Superconductivity, 2004, 32(1): 59-61.
周杭生,许安邦.空间模拟设备GM制冷机组合式冷屏设计[J].真空与低温, 2008, 14(2): 119-125.
ZHOU Hangsheng, XU Anbang. Space simulation facility design of the built-up refrigerated screen of the GM refrigerator [J]. Vacuum and Cryogenics, 2008, 14(2): 119-125.
李炜,施锦,丁怀况.EBIT装置低温系统的设计与实验研究[J].低温与超导, 2005, 33(1): 1-4.
LI Wei, SHI Jing, DING Huaikuang. Design and experiment research of cryogenic system for EBIT [J]. Cryogenics and Superconductivity, 2005, 33(1): 1-4.
于涛,刘敏.辐射器冷屏辐射热分析[J].航天器环境工程, 2005, 22(6): 157-161.
YU Tao, LIU Min. Thermal analysis of radiator cooling plate [J]. Spacecraft Environment Engineering, 2005, 22(6): 157-161.
HABERBUSCH M S, STOCHL R J, CULLER A J. Thermally optimized zero boil-off densified cryogen storage system for space [J].Cryogenics, 2004, 44: 485-491.
张周卫,鱼剑琳,厉彦忠.低温冷屏蔽系统单元模型数值模拟[J].石油化工设备, 2008, 37(5): 26-32.
ZHANG Zhouwei, YU Jianlin, LI Yanzhong. Numerical simulation on unit model of cryogenic cold shield system [J]. Petro-Chemical Equipment, 2008, 37(5): 26-32.
张周卫,陈光奇,厉彦忠,等.低温冷屏蔽系统流场数值模拟研究[J].石油化工设备, 2009, 38(1): 14-21.
ZHANG Zhouwei, CHEN Guangqi, LI Yanzhong, et al. Numerical simulation on flow field of cryogenic cold shield system[J]. Petro-Chemical Equipment, 2009, 38(1): 14-21.
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