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Uniform Channel Micro Heat Exchangers

X. Yin
H. Bau
Journal / Anthology

Journal of Electronic Packaging
Year: 1997
Volume: 119
Page range: 89-94

The performance characteristics of micro heat exchangers of straight channels fabricated in a silicon wafer and operating with liquid nitrogen are evaluated theoretically. The three-dimensional conjugate temperature and flow fields are calculated numerically. The thermal resistance is computed as a function of various geometric parameters. The optimal dimensions which minimize the heat exchanger's thermal resistance are identified. Additionally, a simple, approximate, analytical model, adequate when the ratio of the solid and liquid thermal conductivities is large, is presented and used to predict the heat exchanger's optimal dimensions. The approximate model's predictions are compared with the numerical results.

*Science > Physics > Thermodynamics and Statistical Mechanics
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