Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/141457
Title: Thermal-hydraulic performance of a tapered microchannel
Authors: Cheng, Kai Xian
Chong, Yi Sheng
Ooi, Kim Tiow
Keywords: Engineering::Mechanical engineering
Issue Date: 2018
Source: Cheng, K. X., Chong, Y. S., & Ooi, K. T. (2018). Thermal-hydraulic performance of a tapered microchannel. International Communications in Heat and Mass Transfer, 94, 53-60. doi:10.1016/j.icheatmasstransfer.2018.03.008
Journal: International Communications in Heat and Mass Transfer
Abstract: Tapered microchannel is a channel configuration design (CCD) which has gained attention owing to the superior performance in promoting uniform temperature distribution in a microchannel. In this study, the thermal-hydraulic performance of four different tapered channels is evaluated against a straight microchannel. The average hydraulic diameter, conductive heat transfer in the substrate material and convective heat transfer area are kept constant for the microchannels. The experiment is conducted for steady-state convective heat transfer using distilled water as the working fluid for Reynolds number range of 1300–3400 and a constant heat flux of 53.0 W/cm2. Results show that highly-tapered microchannels promote early turbulence at lower Reynolds numbers with better heat transfer and much greater pressure drop. All the tapered microchannels possess a thermal-hydraulic performance index which is less than 1, implying that a tapered microchannel yields a lower heat transfer capability given the same pumping power as a straight microchannel.
URI: https://hdl.handle.net/10356/141457
ISSN: 0735-1933
DOI: 10.1016/j.icheatmasstransfer.2018.03.008
Rights: © 2018 Elsevier Ltd. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:MAE Journal Articles

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