论文信息 - Enhancing forced convection heat transfer from multiple protruding heat sources simulating electronic components in a horizontal channel by passive cooling

Enhancing forced convection heat transfer from multiple protruding heat sources simulating electronic components in a horizontal channel by passive cooling

Abstract Experiments were conducted to study forced convection heat transfer in a small aspect ratio of multiple protruding heat sources in a horizontal channel with passive cooling. Perforated holes are arranged in the base of channel in a staggered manner in two rows between heat sources. Due to the increase of temperature between heaters, outside air is withdrawn naturally through the perforated holes. Effect of air entering through the perforated holes with different holes/open area ratios ( β =0.0147, 0.0260, 0.0409, 0.0589 and 0.8017) on heat transfer characteristics is examined. It was found that the heat transfer coefficient was enhanced for all values of holes/open area ratio. Results also show that holes with β =0.0409 gives the best thermal performance for 376 Re Gr =0.37×10 7 which are studied and the maximum enhancement in heat transfer is found to be 33.15% at Re =3428. The average Nusselt number and maximum dimensionless temperature are correlated as a function of the Richardson number ( Gr / Re 2 ) and the holes/open area ratio β .

G. Sultan | G. I. Sultan

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