Effect of microchannel heat sink configuration on the thermal performance and pumping power

[Display omitted] •Up to 50% reduction in thermal resistance in new MCHS configurations.•Lower base plate temperature and temperature gradients in new MCHS.•The temperature uniformity on the base is improved due to better coolant distribution. This paper presents a computational modeling of ten diff...

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Bibliographic Details
Published in:International journal of heat and mass transfer 2019-10, Vol.141, p.845-854
Main Authors: Vasilev, M.P., Abiev, R.Sh, Kumar, R.
Format: Article
Language:English
Subjects:
Base plate temperature gradient
Computational fluid dynamics
Configuration management
Configurations
Coolant distribution
Heat sinks
Liquid flow
Longitude
Micro heat sink
Microchannel
Microchannels
Pumping
Temperature distribution
Temperature gradients
Temperature uniformity
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Summary:[Display omitted] •Up to 50% reduction in thermal resistance in new MCHS configurations.•Lower base plate temperature and temperature gradients in new MCHS.•The temperature uniformity on the base is improved due to better coolant distribution. This paper presents a computational modeling of ten different configurations of microchannel heat sink (MCHS) with single phase liquid flow in order to compare their performance with the conventional MCHS. New configurations with a longitudinal and transverse arrangement of microchannels relative to the base plate, different number of coolant passages, cocurrent and countercurrent coolant supply were studied to obtain maximum thermal performance and uniform temperature distribution. The formation of the developing flow zones in a number of new configurations allowed to achieve higher Nusselt numbers and low thermal resistances at the same pumping power in comparison with conventional MCHS. The proposed methods of coolant supply make it possible to reduce the temperature gradients and improve the temperature uniformity on the base due to better distribution of coolant.
ISSN:0017-9310
1879-2189
DOI:10.1016/j.ijheatmasstransfer.2019.07.031