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Investigation of the enhancement effect of heat transfer using micro channel

Xia, Liang; Chan, Yue

Authors

Liang Xia liang.xia@nottingham.edu.cn

Yue Chan



Abstract

This paper reports an investigation of the enhanced heat transfer effect in micro sized channels. In particular, a simulation model has been established using computational fluid dynamics (CFD) platform, i.e., Fluent to investigate such micro effect. Here, hot fluid flow is squeezed into the micro channel and the heat is gradually transferred into the cold surface boundaries, i.e., top and bottom surfaces of the channel having rectangular cross-sections. The area of inlet is varied to investigate and identify the enhanced heat absorption arising from the size effect and it is found that heat transfer rate per unit effective heat transfer area is greater if the inlet area becomes smaller. Lower pressure drop can also be deduced if smaller radii channels are considered. Least but not last, a new design of heat exchanger is proposed based on these extra micro-effects.

Journal Article Type Article
Publication Date Aug 28, 2015
Journal Energy Procedia
Print ISSN 1876-6102
Electronic ISSN 1876-6102
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 75
APA6 Citation Xia, L., & Chan, Y. (2015). Investigation of the enhancement effect of heat transfer using micro channel. Energy Procedia, 75, https://doi.org/10.1016/j.egypro.2015.07.234
DOI https://doi.org/10.1016/j.egypro.2015.07.234
Keywords micro channel heat transfer; heat transfer enhancement; reduction in pressure loss; micro channel heat exchanger
Publisher URL http://www.sciencedirect.com/science/article/pii/S1876610215010024?via%3Dihub
Copyright Statement Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by-nc-nd/4.0

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by-nc-nd/4.0



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