Present investigation analyzes the issue of entropy generation in a uniformly heated microchannel heat sink (MCHS). Analytical approach used to solve forced convection problem across MCHS, is porous medium model based on modified Darcy equation for fluid flow and two-equation model for heat transfer between solid and fluid phases. Furthermore, closed form solution of velocity distribution is employed to capture z-direction velocity gradient of flow, which plays a salient role on entropy generation through fluid flow. Analytical expressions for total and thermal entropy generation number (stems from heat transfer), and Bejan number are derived and cast into dimensionless form using velocity and temperature distributions. Besides, entropy generation characteristics in MCHS and the impact of various influential parameters on entropy production have been investigated. Finally, In order to examine the accuracy of analysis, the results of thermal evaluation are compared to one of the previous investigations conducted for thermal optimization of MCHS.
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ASME 4th International Conference on Nanochannels, Microchannels, and Minichannels
June 19–21, 2006
Limerick, Ireland
Conference Sponsors:
- Nanotechnology Institute
ISBN:
0-7918-4760-8
PROCEEDINGS PAPER
Analysis of Microchannel Heat Sink Performance for Electronics Cooling Based on Thermodynamics
Hessamoddin Abbassi,
Hessamoddin Abbassi
K.N.Toosi University of Technology, Tehran, Iran
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Mohammad H. Saidi,
Mohammad H. Saidi
Sharif University of Technology, Tehran, Iran
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Pouya Zageneh Kazemi
Pouya Zageneh Kazemi
McMaster University, Hamilton, Ontario, Canada
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Hessamoddin Abbassi
K.N.Toosi University of Technology, Tehran, Iran
Mohammad H. Saidi
Sharif University of Technology, Tehran, Iran
Pouya Zageneh Kazemi
McMaster University, Hamilton, Ontario, Canada
Paper No:
ICNMM2006-96245, pp. 355-362; 8 pages
Published Online:
September 15, 2008
Citation
Abbassi, H, Saidi, MH, & Kazemi, PZ. "Analysis of Microchannel Heat Sink Performance for Electronics Cooling Based on Thermodynamics." Proceedings of the ASME 4th International Conference on Nanochannels, Microchannels, and Minichannels. ASME 4th International Conference on Nanochannels, Microchannels, and Minichannels, Parts A and B. Limerick, Ireland. June 19–21, 2006. pp. 355-362. ASME. https://doi.org/10.1115/ICNMM2006-96245
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