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Effect of Heat Pipe Figure of Merit on an Evaporating Thin Film

Jasvanth, VS and Ambirajan, Amrit and Kumar, Dinesh and Arakeri, Jaywant H (2013) Effect of Heat Pipe Figure of Merit on an Evaporating Thin Film. In: JOURNAL OF THERMOPHYSICS AND HEAT TRANSFER, 27 (4). pp. 633-640.

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Official URL: http://dx.doi.org/10.2514/1.T3980

Abstract

The performance of a two-phase heat transport device such as the loop heat pipe is influenced by the evaporative heat transfer coefficient in the evaporator. From previous experiments with loop heat pipes, it has been observed that fluids with a high heat pipe figure of merit have a high heat transfer coefficient. Considering an evaporating extended thin film, this paper theoretically corroborates this experimental observation by deriving a direct link between the evaporative heat flux at the interface and the fluid figures of merit (namely interline heat flow parameter and heat pipe figure of merit) in the thin film. Numerical experiments with different working fluids clearly show that a fluid with high figure of merit also has a high cumulative heat transfer in the microregion encompassing the evaporating thin film. Thus, a loop heat pipe or heat pipe that uses a working fluid with a high interline heat flow parameter and heat pipe figure of merit will lead to a high evaporative heat transfer coefficient.

Item Type: Journal Article
Additional Information: copyright for this article belongs to the ST AERONAUTICS ASTRONAUTICS, USA
Department/Centre: Division of Mechanical Sciences > Mechanical Engineering
Depositing User: Id for Latest eprints
Date Deposited: 16 Mar 2014 11:25
Last Modified: 16 Mar 2014 11:25
URI: http://eprints.iisc.ac.in/id/eprint/48656

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