Journal of Enhanced Heat Transfer Theory and Application in High Performance Heat and Mass Transfer

ISSN for PRINT: 1065-5131

For Online Access

Best Paper Award Selection - Editorial Board Site

2007, Volume14

Issue 1

95 pages

DOI: 10.1615/JEnhHeatTransf.v14.i1

Issue price - $160.00

Ming-Xiang Liu
Department of Power Mechanical Engineering, National Tsing Hua University Hsinchu, Taiwan 300

Wen-Jenn Sheu
Department of Power Mechanical Engineering, National Tsing Hua University Hsinchu, Taiwan 300

Song-Bor Chiang
Energy & Environment Laboratories, Industrial Technology Research Institute, Hsinchu, Taiwan 310

Chi-chuan Wang
Industrial Technology Research Institute, Energy Resources Lab. Bldg. 64, Section 4, Chung Hsing Rd., Chutung 310, Hsinchu, Taiwan, R.O.C 31015

This study experimentally examines the influence of the inlet locations on the flow distributions of the multi-channel cold plate by means of particle image velocimetry (PIV). Flow visualization for a total of five inlet configurations (namely, U-, I-, J-, L-, and Z-arrangements) are reported in this study. For the U-arrangement, a higher inlet flow rate of the cold plate shows more pronounced maldistribution, and the flow distribution shows three maxima along the channels. The maximum velocity for the J-arrangement occurs at the first few channels from entry. This is attributed to the pressure variation along the inlet and outlet manifold subject to branching and collecting fluid flow. Both J- and Z-arrangements show a detectable flow recirculation at the first few channels, and this phenomenon becomes more pronounced with the rise of inlet flow rate. As a consequence, the pressure drop caused by this considerable recirculation exceeds that of the U-arrangement where the pressure drop is dominated by the impingement flow.

DOI: 10.1615/JEnhHeatTransf.v14.i1.40 Download article, 65-76 pages

Article price - $35.00

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