TITLE

Experimental Investigation of Fluid Flow and Heat Transfer in Circular Microchannels

AUTHOR(S)
Khan, Mohd Nadeem; Islam, Mohd; Hasan, M. M.
PUB. DATE
September 2011
SOURCE
International Review of Mechanical Engineering;Sep2011, Vol. 5 Issue 6, p1144
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Heat dissipation in high performance electronic components becomes a significant issue in efficiency promotion and stable operation. Microchannel Heat Exchanger plays the major role for heat dissipation from such high heat generating electronic components. In this connection an experimental investigation was conducted to explore the validity of classical correlations based on conventional sized channels for predicting the thermal behavior in single-phase water flow through circular microchannels. The microchannels under investigation have the hydraulic diameter of 279µm and 45 mm long. Test piece was made of stainless steel and the test section contained total seventy nine microchannels arranged in circumferential manner. The experiments were conducted with deionized water of Reynolds number ranging from approximately 300 to 3000. Pressure drop and flow rates were measured to analyze the flow characteristics. The results show good agreement between the classical correlations and the experimentally measured data in the turbulent region while in the laminar regime the experimental data have mismatch with the classical correlations. Suggesting that a conventional analysis approach can be employed in predicting heat transfer behavior in microchannels of the dimensions considered in this study.
ACCESSION #
76109724

 

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