A thin electronic circuit board, 0.1 m by 0.1 m in size, is to be cooled in
Question:
A thin electronic circuit board, 0.1 m by 0.1 m in size, is to be cooled in air at 25?C. The board is placed in a vertical position and the back side is well insulated. If the heat dissipation is uniform at 200 W/m2, determine the average temperature of the surface of the board cover.GIVENVertical circuit board in airBack is well insulatedBoard dimensions (L x H) = 0.1 m x 0.1 mAir temperature (T??) = 25?CUniform heat dissipation rate (qG /A) = 200 W/m2ASSUMPTIONSAmbient air is stillThe board has reached steady stateRadiation isnegligible
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Since the fluid properties must be evaluated at the average of the surface and ambient temperatures ...View the full answer
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Related Book For 
Principles of heat transfer
ISBN: 978-0495667704
7th Edition
Authors: Frank Kreith, Raj M. Manglik, Mark S. Bohn
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