A 3-m2 hot black surface at 80oC is losing heat to the surrounding air at 25oC by

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A 3-m2 hot black surface at 80oC is losing heat to the surrounding air at 25oC by convection with a convection heat transfer coefficient of 12 W/m2·oC, and by radiation to the surrounding surfaces at 158C. The total rate of heat loss from the surface is
(a) 1987 W
(b) 2239 W
(c) 2348 W
(d) 3451 W
(e) 3811 W
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Thermodynamics An Engineering Approach

ISBN: 978-0073398174

8th edition

Authors: Yunus A. Cengel, Michael A. Boles

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