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Innovative Design of Light-Weight Finned Heat Sinks for Air Cooling of Electronics by Natural Convection

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DOI: 10.23977/jeis.2020.51009 | Downloads: 22 | Views: 1444


Lian-Tuu Yeh 1


1 ASME Fellow, Thermal Consultant Dallas, Texas, USA

Corresponding Author

Lian-Tuu Yeh


For the tower or poled or even roof top mounted electronics, the heat sink weight is extremely important. This study describes the analysis and development of the light weight plain fin heat sink for cooling of electronics, especially for those outdoor wireless systems. A CFD analysis is performed to investigate the thermal performance of this finned heat sink at the vertical and horizontal positions under the passive cooling scheme, i.e. combined natural convection and radiation heat transfer. In addition, unlike most of previous work which is limited to either a uniform heating or uniform temperature at the base of the heat sink, the present investigation considers discrete heat sources with various power densities (heat loads) from electronics in contact with a section of the heat sink base. It should also be noted that all discussion, including the design, analysis and results can be applied to both the indoor and outdoor equipment. However, for any outdoor equipment, one must include the solar heating to the system into the design and analysis. It is found that the solar heating adds about 4 ºC to all parts of the system.


Electronics, Finned heat sink, Light-weight, Natural Convection, Outdoor, Telecommunications


Lian-Tuu Yeh. Innovative Design of Light-Weight Finned Heat Sinks for Air Cooling of Electronics by Natural Convection. Journal of Electronics and Information Science (2020) 5: 53-62. DOI:


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