The emissivity of the surface is 08 determine the total

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Reference no: EM13606574

A 9-cm-diameter spherical ball whose surface is maintained at a temperature of 110^oC is suspended in the middle of the room at 20^oC. If the convection heat transfer coefficient is 15 W/m².C and the emissivity of the surface is 0.8, determine the total rate of heat transfer from the ball. At what temperature must the ball be maintained so that the heat transfer by radiation is 55% of the total heat transfer?

Reference no: EM13606574

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