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Theoretical Studies of Hard Filling in Loop Heat Pipes

Adoni, Abhijit A and Ambirajan, Amrit and Jasvanth, VS and Kumar, D Nagesh and Dutta, Pradip (2010) Theoretical Studies of Hard Filling in Loop Heat Pipes. In: Journal of Thermophysics and Heat Transfer, 24 (1). pp. 173-183.

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Official URL: http://www.aiaa.org/content.cfm?pageid=322&lupubid...

Abstract

Loop heat pipe is a passive two-phase heat transport device that is gaining importance as a part of spacecraft thermal control systems and also in applications (such as in avionic cooling and submarines). Hard fill of a loop heat pipe occurs when the compensation chamber is full of liquid. A theoretical study is undertaken to investigate the issues underlying the loop beat pipe hard-fill phenomenon. The results of the study suggest that the mass of charge and the presence of a bayonet have significant impact on the loop heat pipe operation. With a largern mass of charge, a loop heat pipe hard fills at a lower heat load. As the heat load increases, there is a steep rise in the loop heat pipe operating temperature. In a loop heat pipe with a saturated compensation chamber, and also in a hard-filled loop heat pipe without a bayonet, the temperature of the compensation chamber and that of the liquid core are nearly equal. When a loop heat pipe with a bayonet hard fills, the compensation chamber and the evaporator core temperatures are different.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to American Institute of Aeronautics and Astronautics.
Department/Centre: Division of Mechanical Sciences > Mechanical Engineering
Date Deposited: 12 Mar 2010 09:35
Last Modified: 29 Jun 2011 06:11
URI: http://eprints.iisc.ernet.in/id/eprint/25788

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