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A flat plate is maintained at 400 degrees C and it is well insulated around the...

A flat plate is maintained at 400 degrees C and it is well insulated around the sides and bottom. The plate experiences 800 w/m^2 of irradiation from its surroundings. The surrounding air is at 40 degrees C. The surrounding 40C air provides a convection coefficient of 15 w/m^2K. The plate surface has an emissivity of 0.9 and an absorptivity (for all irradiation) of 0.7.   What is the net heat transfer.

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400 c 613 of G - hAT Is 400-40) sx 360 - 560 Net hea

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