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Effect of heat source area on the thermal resistance of the wick columns vapor chambers

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Abstract

The results of the spreading thermal resistance, heat transfer and flow characteristics of the vapor chamber embedded with plate fin are investigated. The experiments are performed with the vapor chambers with wick plate and wick columns embedded plate fin. Parametric studies including different heat fluxes, heated surface areas, flow rate of coolants on the cooling performance in terms of the spreading thermal resistance and heat transfer characteristics are considered. A three-dimensional heat and mass transfer model for the vapor chamber with wick plate and wick columns are developed. The velocity and pressure distributions of liquid phase and vapor phase inside the vapor chamber obtained from the simulation are shown. By comparing the experimental results with numerical results, reasonable agreement is obtained. It can be found that the heat input and heat source area have significant effect on the decreasing of the boiling and condensation thermal resistances while they are slightly effect on the decreasing of the convective thermal resistance. Due to the wick plate and wick columns, the capillary force has significant effect on the working fluid circulation, evaporation rate and flow directions of the liquid and vapor phases inside the vapor chamber. The results of this study are of technological importance for the efficient design of cooling system of the personal computer or electronic devices to enhance cooling performance of the vapor chamber.

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Authors and Affiliations

  1. Thermo-Fluids and Heat Transfer Enhancement Lab. (TFHT), Department of Mechanical Engineering, Faculty of Engineering, Srinakharinwirot University, 63 Rangsit-Nakhornnayok Rd., Ongkharak, Nakhorn-Nayok, 26120, Thailand

    Songkran Wiriyasart & Paisarn Naphon

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  1. Songkran Wiriyasart
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  2. Paisarn Naphon
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Correspondence to Paisarn Naphon.

Additional information

Recommended by Associate Editor Dae Hee Lee

P. Naphon was born in Thailand on July 28, 1972. He received the Master D., and Dr.Ing. degrees in mechanical engineering from King Mongkut’s University of Technology Thonburi, Bangkok, Thailand, in 1998 and 2004, respectively. His areas of interest include heat transfer enhancement, heat pipe testing, modeling and simulation, electronic cooling and heat transfer enhancement. He has a temporary contract now with Srinakharinwirot University - Bangkok-Thailand.

S. Wiriyasart was born in Thailand on April 13, 1982. He received the Bachelor’s and Master’s degrees in mechanical engineering from Srinakharinwirot University, Bangkok, Thailand, in 2006, 2008, respectively. His areas of interest include heat transfer enhancement, heat pipe testing, modeling and simulation, electronic cooling. Now, he is the Ph.D. student in Mechanical Engineering, Srinakharinwirot University - Bangkok-Thailand.

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Wiriyasart, S., Naphon, P. Effect of heat source area on the thermal resistance of the wick columns vapor chambers. J Mech Sci Technol 30, 933–942 (2016). https://doi.org/10.1007/s12206-016-0147-0

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  • DOI: https://doi.org/10.1007/s12206-016-0147-0

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