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A HEAT TRANSFER ANALYSIS FROM A POROUS PLATE WITH TRANSPIRATION COOLING

   Kilic, Mustafa

Present study is focused on improving heat transfer from a porous plate by cooling of air with transpiration cooling. Effects of Reynolds number of the air channel flow and particle diameter on cooling effectiveness of porous plate and efficiency of system were investigated experimentally. It was observed that increasing Reynolds number of 15.2% causes a decrease of 6.9% on cooling efficiency of the system and a decrease of 8.6% on cooling effectiveness of porous plate. Decreasing particle diameter causes a significant decrease on surface temperature and an increase on cooling effectiveness of porous plate. Difference of cooling effectiveness of porous plate from d(p) = 40-200 mu m is 12%. Verification of this study was also shown by comparing experimental results of this study with literature.

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