A loaf of bread having a surface temperature of 373 K is being baked in an oven whose walls and the air rate at 477.4 K. The bread moves continuously through the large oven on an open chain belt conveyor. The emissivity of the bread is estimated as 0.85 and the loaf can be assumed a rectangular solid 114.3 mm high x 114.3 mm wide x 330 mm long. Calculate the radiation heat transfer rate to the bread, assuming that this is small compared to the oven and neglecting natural convection heat transfer.

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