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�������պ����ѧѧ�� 2005, Vol. 31 Issue (02) :116-120    DOI:
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1. �������պ����ѧ ���տ�ѧ�빤��ѧԺ, ���� 100083;
2. �й��ռ似���о�Ժ,���� 100086
Experimental investigation on temperature oscillation of loop heat pipes
Zhang Hongxing1, Lin Guiping1, Ding Ting2, Shao Xingguo2*
1. School of Aeronautic Science and Technology, Beijing University of Aeronautics and Astronautics, Beijing 100083, China;
2. China Academy of Space Technology, Beijing 100086, China

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Abstract�� The phenomenon of temperature oscillation in loop heat pipes was described and explained. Test results indicate that temperature oscillation frequently occurred at very low and very high heat loads. At low start-up heat loads evaporation inside the primary wick was easy to occur when the evaporator, including vapor grooves and evaporator core, were flooded with liquid. Evaporation inside the wick will lead to the temperature oscillation at the condenser inlet. Start-ups with temperature oscillation at the condenser inlet will shift the steady state operating temperatures higher than normal. While at high heat loads, vapor can not be condensed absolutely in condenser for its limit ability to reject heat and temperature oscillation will occur at the condenser outlet, which can be avoided by increasing the working fluid charge mass.
Keywords�� loop heat pipe   temperature oscillation   reverse flow   start-up     
Received 2004-06-20;
Fund:

����863����������Ŀ(2002AA741051)

About author: �ź���(1980-),��,����������,��ʿ��, redlincoco@hotmail.com.
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�ź���, �ֹ�ƽ, ��͡, ���˹�.��·�ȹ��¶Ȳ��������ʵ�����[J]  �������պ����ѧѧ��, 2005,V31(02): 116-120
Zhang Hongxing, Lin Guiping, Ding Ting, Shao Xingguo.Experimental investigation on temperature oscillation of loop heat pipes[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2005,V31(02): 116-120
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http://bhxb.buaa.edu.cn//CN/     ��     http://bhxb.buaa.edu.cn//CN/Y2005/V31/I02/116
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