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|Title: ||Analysis of loop heat pipe performance under varying wick load|
|Authors: ||Reis, A|
Miguel, A. F.
|Keywords: ||heat pipe performance|
|Issue Date: ||Aug-2005|
|Citation: ||A. H. Reis, A. F. Miguel, M. Aydin. Analysis of loop heat pipe performance under varying wick load. Journal of Mechanical Engineering 51 (2005) 451-455|
|Abstract: ||Loop heat pipes (LHP) are heat transfer devices used to enhance cooling of small spaces and basically consist of sealed
tubes connecting a heat source, the evaporator, whose major part is a porous wick, with a condenser that operates as
heat sink. In this paper we analyse the effect of curvature of the liquid vapor interface upon the vapor pressure within
wick pores. We show how this effect affects start-up by requiring a difference between wick and condenser temperatures as higher as wick pore width becomes smaller. We analysed also transient operation and found that idealy LHP are self-adjusting systems that tend to stable operation. We present a formula to describe the transient regime. The
analysis provides also optimization of wick pore width for maximum heat transfer. Optimal pore width is shown to vary with temperature difference between wick and condenser. It is envisaged how this feature may help in LHP design.|
|Appears in Collections:||FIS - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica|
CGE - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica
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