Results 181 to 190 of about 7,339 (224)

Measurements of heat transfer in microchannel heat sinks

International Communications in Heat and Mass Transfer, 2000
Abstract The paper presents new experimental measurements for pressure drop and heat transfer coefficient in microchannel heat sinks. Tests were performed with devices fabricated using standard Silicon 100 wafers. Two different channel patterns were studied.
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Enhanced Microchannel Heat Sinks Using Oblique Fins

ASME 2009 InterPACK Conference, Volume 2, 2009
Oblique fins created in a microchannel heat sink can serve to modulate the flow, resulting in local and global heat transfer enhancement. Numerical analysis of laminar flow and heat transfer in such modified microchannel heat sink showed that significant enhancement of heat transfer can be achieved with negligible pressure drop penalty. The breakage of
Yong-Jiun Lee, Poh-Seng Lee, Siaw-Kiang Chou   +2 more
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Forced convection heat transfer in microchannel heat sinks

International Journal of Heat and Mass Transfer, 2007
Abstract This paper presents an analysis of forced convection heat transfer in microchannel heat sinks for electronic system cooling. In view of the small dimensions of the microstructures, the microchannel is modeled as a fluid-saturated porous medium. Numerical solutions are obtained based on the Forchheimer–Brinkman-extended Darcy equation for the
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Microchannel integrated heat sinks in silicon technology

Conference Record of 1998 IEEE Industry Applications Conference. Thirty-Third IAS Annual Meeting (Cat. No.98CH36242), 2002
The use of microchannels in silicon substrates as a forced liquid cooling device for power integrated circuits is investigated. Thermal dissipation characteristics are calculated for several microchannels geometry. An optimised structure is proposed and its technological realisation is described.
C. Perret, C. Schaeffer, J. Boussey
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Flow Boiling in a Microchannel Heat Sink

Heat Transfer, Part A, 2005
Flow boiling heat transfer in a microchannel heat sink is experimentally investigated. The microchannels considered are 275 μm wide and 636 μm deep, and the experiments are conducted at inlet water temperatures in the range of 66 to 95°C and mass fluxes of 341 to 936 kg/m2s.
Dong Liu, Suresh V. Garimella
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Heat sink optimization with application to microchannels

IEEE Transactions on Components, Hybrids, and Manufacturing Technology, 1992
The equations governing the fluid dynamics and combined conduction/convection heat transfer in a heat sink are presented in dimensionless form for both laminar and turbulent flow. A scheme presented for solving these equations permits the determination of heat sink dimensions that display the lowest thermal resistance between the hottest portion of the
R.W. Knight, D.J. Hall, J.S. Goodling, R.C. Jaeger   +3 more
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Optimization design of microchannel cooling heat sink

International Journal of Numerical Methods for Heat & Fluid Flow, 2007
PurposeThis paper sets out to optimize the shape and size of microchannels cooling heat sink, which has been widely used to cool electronic chip for its high heat transfer coefficient and compact structure.Design/methodology/approachSequential Quadratic Programming (SQP) method is used to optimize the cross‐section sizes of microchannels. Finite volume
Baodong Shao, Zhaowei Sun, Lifeng Wang
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Heat Transfer of a Double Layer Microchannel Heat Sink

Applied Mechanics and Materials, 2013
A numerical study is conducted to predict the effects of physical parameters of a double layer microchannel heat sink on heat transfer. The physical parameters investigated are the channel height and channel width for different flow orientation at the upper and lower channels.
Wong Kok Cheong, Fashli Nazhirin bin Ahmad Muezzin   +1 more
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Heat transfer of Al2O3 nanofluids in microchannel heat sink

AIP Conference Proceedings, 2017
Microchannel heat sink creates an innovative cooling technology to remove large amount of heat from small area. Recently, nanotechnology gain interest to explore the microchannel cooling benefits of nanofluids as working fluid. The objective of this study is to investigate the effect of heat transfer to Al2O3 nanofluids after used as working fluid in ...
A. A. Razali, A. Sadikin, S. A. Ibrahim
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Heat transfer in rectangular microchannels heat sink using nanofluids

International Communications in Heat and Mass Transfer, 2010
Abstract The effect of using nanofluids on heat transfer and fluid flow characteristics in rectangular shaped microchannel heat sink (MCHS) is numerically investigated for Reynolds number range of 100–1000. In this study, the MCHS performance using alumina–water (Al2O3-H2O) nanofluid with volume fraction ranged from 1% to 5% was used as a coolant is ...
H.A. Mohammed, P. Gunnasegaran, N.H. Shuaib   +2 more
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