摘要
本文针对登月航天器激光载荷热控要求设计了一种基于相变材料的热控装置,使用ANSYS有限元分析软件对该装置的力学性能进行了理论研究,并搭建实验装置,对该热控装置在振动条件以及热真空条件下的力学特性进行了实验研究,结果表明在本文实验范围内,相变材料热控装置的壳体不会发生塑性形变和泄露。同时,对其升温特性进行了实验研究,分别探讨了不同加热功率以及重力对相变材料升温特性的影响,实验结果表明,相变材料固液共存阶段比单相阶段的升温速率慢、历时长且吸收的热量多,同时相变材料在发生相变时引起的自然对流对换热的整体效果影响可以忽略。
The temperature control equipment using phase change material was designed for the laser distance detector in the space craft landing on the moon. ANSYS was used to analyze the mechanical property of the equipment theoretically. The experimental apparatus was constructed to obtain the mechanical property experimentally under different vibration conditions and different temperature and vacuum conditions. The effects of gravity and heating power on temperature variation characteristics of the equipment were investigated experimentally. The experimental results revealed that temperature rises slower as the phase change material stays at two phase state rather than single phase; during the two phase state, the heat absorbed by the material is much more than the heat absorbed at single state; and the lasting time is much longer during two phase state than that of single state. In addition, the effect of natural convection on heat transfer performance could be neglected during phase change.
引文
[1]闵桂荣,郭舜.航天器热控制[M].北京:科学出版社,1998:320‐357
[2]王磊,菅鲁京.相变材料在航天器上的应用[J].航天器环境工程,2013,30(5):522‐528
[3]Fixler S Z.Satellite thermal control using phase‐change materials[J].Journal of Spacecraft,1966,3(9):1362‐1368
[4]Biswas D R.Thermal energy storage using sodium sulfate decahydrate and water[J].Solar Energy,1977,19(1):99‐102
[5]Birur G C,Johnson K R,Novak K S,et al.Thermal control of mars lander and rover batteries and electronics using loop heat pipe and phase change material thermal storage technologies[C]30th International Conference on Environmental Systems.Toulouse,France,2000‐07‐10;
[6]Birur G,Novak K.Novel thermal control approaches for mars rovers,NASA 2006‐0032392[R];
[7]Pauken M,Sunada E,Novak K,et al.Development testing of a paraffin‐actuated heat switch for mars rover applications,NASA 2002‐01‐2273[R]
[8]Zalba B,Marin J M,Caberza L F.Review on thermal energy storage with phase change:materials,heat transfer analysis and application[J].Applied Thermal Engineering,2003,23(3):251‐283
[9]Farid M M,Khudhair A M,Razack S A K.A review on phase change energy storage materials and application[J].Energy Conversion and Management,2004,45(9‐10):1597‐1615
[10]Sharma A,Tyagi V V,Chen C R.Review on thermal energy storage with phase change materials and application[J].Renewable and Sustainable Energy Reviews,2009,13(2):318‐345
[11]Liu M,Saman W,Bruno F.Review on storage materials and thermal performance enhancement techniques for high temperature phase change thermal storage systems[J].Renewable and Sustainable Energy Reviews,2012,16(4):2118‐2132