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�������պ����ѧѧ�� 2009, Vol. 35 Issue (3) :280-283    DOI:
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Dynamical thermal analysis of microchannel cooling system for in-orbit nano-satellite
Liu Jia, Li Yunze, Wang Jun*
School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

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ժҪ ��������������ܶȲ������ߵķ�չ����,������һ�ֻ���΢���缼��(MEMS,Micro Electro Mechanical Systems)�ı�����������΢�۵���ȴϵͳ.ͨ������������,Ӧ�ü��ܲ������������ܹ���ӳ�ܿض�����ȴװ�ö�̬���Ե��¶���Ӧģ��;������ֵ�������������ij�������ڹ�������ܿռ�������Ӱ���µ��ⲿɢ������ڲ������豸�¶ȵı仯����.����������:Ӧ��MEMS������΢�۵���ȴϵͳ��������������ܶȵ���������ϵͳ����ȴ����;�ռ�����������������ڲ��ȹ��ʵı仯,��������ɢ�����¶ȵ�Ӱ���С;�ý�ģ����������㷨�Է������������ǵ��¶ȶ�̬�����Ǽ�㡢�����,��Ϊ��һ�������о��������ȿ��ơ��ȹ��������뼼���춨�������о�������Ӧ�û���.
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Abstract�� Considering the continually rising tendency of the power densities of nano-satellite, MEMS (micro electro mechanical systems)based pumped liquid microchannel cooling system was introduced. Dynamical thermal response model for the temperature changes of both the controlled object and the cooling device was built up by means of the lumped parameter method with reasonable analysis and logical simplification. Based on the nanosatellite inorbit case, the variation rule of the internal electronic equipment and external radiator surfaces were performed by the numerical simulation and calculation. Simulation results indicate that MEMS based on the microchannel cooling system can satisfy the cooling requirements of nano satellite thermal system with high heat flux; the external space heat flux has less affect to the radiator of nano satellite compared with the internal equipment; the modeling methods and algorithm is convenient and reasonable not only for the dynamical temperature calculation and the analysis of nano satellite, but also for the developing of advanced nano-satellite thermal control and thermal management theories and technologies.
Keywords�� nano-satellite   microchannel   cooling system   dynamics   modeling     
Received 2008-03-20;
Fund:

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About author: �� ��(1983-),Ů,����������,��ʿ��,liujia@ase.buaa.edu.cn.
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�� ��, ������, �� ��.������΢�۵���ȴϵͳ�ڹ춯̬�����Է���[J]  �������պ����ѧѧ��, 2009,V35(3): 280-283
Liu Jia, Li Yunze, Wang Jun.Dynamical thermal analysis of microchannel cooling system for in-orbit nano-satellite[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2009,V35(3): 280-283
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