In order to study the fundamental physical mechanisms of fluid flow and heat transfer in microchannels, many effects should be taken into account. The effect of axial heat conduction on heat transfer in microchannels is one of the hottest topics. Experimental investigation was carried out to analyze heat transfer characteristics of methanol flowing through microchannel heat sink, which consists of 10 parallel triangular microchannels. Experimental results show that the temperature distribution on the heated wall do not change linearly along the channel, which mainly caused by the axial heat conduction in the wall. The ratio of the power due to the axial heat flux to the Joule heating in the heater, and the axial heat conduction number were used to evaluate the heat conduction effect in the wall. Many factors play important roles in the axial heat conduction, including geometric configuration, material of the wall, and Reynolds number. The experimental study reveals that the axial heat conduction effect is gradually strengthened as the Reynolds number decreases.
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ASME 2008 First International Conference on Micro/Nanoscale Heat Transfer
June 6–9, 2008
Tainan, Taiwan
Conference Sponsors:
- Nanotechnology Institute
ISBN:
0-7918-4292-4
PROCEEDINGS PAPER
Effect of Axial Heat Conduction on Heat Transfer in Triangular Silicon Microchannels
Yunhua Gan,
Yunhua Gan
South China University of Technology, Guangzhou, Guangdong, China
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Zeliang Yang,
Zeliang Yang
South China University of Technology, Guangzhou, Guangdong, China
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Cheng Yang,
Cheng Yang
South China University of Technology, Guangzhou, Guangdong, China
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Shuangfeng Wang
Shuangfeng Wang
South China University of Technology, Guangzhou, Guangdong, China
Search for other works by this author on:
Yunhua Gan
South China University of Technology, Guangzhou, Guangdong, China
Zeliang Yang
South China University of Technology, Guangzhou, Guangdong, China
Cheng Yang
South China University of Technology, Guangzhou, Guangdong, China
Shuangfeng Wang
South China University of Technology, Guangzhou, Guangdong, China
Paper No:
MNHT2008-52107, pp. 859-865; 7 pages
Published Online:
June 22, 2009
Citation
Gan, Y, Yang, Z, Yang, C, & Wang, S. "Effect of Axial Heat Conduction on Heat Transfer in Triangular Silicon Microchannels." Proceedings of the ASME 2008 First International Conference on Micro/Nanoscale Heat Transfer. ASME 2008 First International Conference on Micro/Nanoscale Heat Transfer, Parts A and B. Tainan, Taiwan. June 6–9, 2008. pp. 859-865. ASME. https://doi.org/10.1115/MNHT2008-52107
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