A 3-m2 hot black surface at 80degc is losing heat to the, Ask an Expert

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A 3-m2 hot black surface at 80°C is losing heat to the surrounding air at 25°C by convection with a convection heat transfer coefficient of 12 W/m2.°C, and by radiation to the surrounding surfaces at 15°C. Determine the total rate of heat loss from the surface.

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