Study of the equivalent thermal conductivity in the evaporation area of a flat micro heat pipe

Cornel Suciu; Adriana Tolos (Furnică); Radu Dumitru Pentiuc

doi:10.1117/12.2323408

31 December 2018 Study of the equivalent thermal conductivity in the evaporation area of a flat micro heat pipe

Cornel Suciu, Adriana Tolos (Furnică), Radu Dumitru Pentiuc

Proceedings Volume 10977, Advanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies IX; 109771V (2018) https://doi.org/10.1117/12.2323408
Event: Advanced Topics in Optoelectronics, Microelectronics and Nanotechnologies IX, 2018, Constanta, Romania

Abstract

Due to the continuous miniaturization of new generation electronic equipment the lack of space is a factor that imposes important constraints on the cooling equipment. This requirement, combined with the ever increasing amount of heat generated by electronic components, led to the development of new cooling devices such as micro heat pipes with micro and nano-channels, that make use of various work liquids.

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.

Citation Download Citation

Cornel Suciu, Adriana Tolos (Furnică), and Radu Dumitru Pentiuc "Study of the equivalent thermal conductivity in the evaporation area of a flat micro heat pipe", Proc. SPIE 10977, Advanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies IX, 109771V (31 December 2018); https://doi.org/10.1117/12.2323408

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