Air at 20C flows over a 4-m-long and 3-m-wide surface of a plate whose temperature is 80C
Question:
Air at 20°C flows over a 4-m-long and 3-m-wide surface of a plate whose temperature is 80°C with a velocity of 5 m/s. The rate of heat transfer from the surface is
(a) 7383 W
(b) 8985 W
(c) 11,231 W
(d) 14,672 W
(e) 20,402 W
(For air, use k = 0.02735 W/m.K, Pr = 0.7228, v = 1.798 × 10-5 m2/s)
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Firstcalculate the Reynolds number to determine the flow regime Re vLv 5 4 1798e5 11142 Since R...View the full answer
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Related Book For
Heat And Mass Transfer Fundamentals And Applications
ISBN: 9780073398181
5th Edition
Authors: Yunus Cengel, Afshin Ghajar
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