By comparison to classical solutions, where certain heat elimination processes require substantial energetic input, the cooling solutions offered by heat exchangers with heat pipes offer a great advantage in the sense that they can transfer important heat fluxes by aid of a working fluid hermetically enclosed in a constant volume chamber. The present work aims to model some of the state parameters that define phase changes taking place during heat transfer within flat micro heat pipes (FMHPs) that use acetone as a working fluid. Modeling results for the equivalent thermal conductivity in the vaporization region of the FMHP are presented. It was found that FMHP design must take into account the phase changes of the liquid by report to the heat flux and the overall length, as these parameters have an important influence on the FMHP efficiency. |
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Liquids
Capillaries
Mathematical modeling
Microfluidics
Heat flux
Lithium
Thermal modeling