hw09 - NCSU-MAE310 HW09 HOMEWORK#9 Provide a clear concise...

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NCSU-MAE310 HW09 H OMEWORK #9 Provide a clear concise solution for each of the following radiative heat transfer problems. For all problems, assume steady heat transfer in a non-participating medium. 1. A long V groove 10 mm deep is machined on a block that is maintained at 1000 K.   10 mm 20 The groove surfaces are diffuse-gray with an emissivity of 0.6. (a)Determine the radiant flux leaving the groove to its surroundings. (b) The effective emissivity ε e of a cavity is defined as the ratio of the radiant power leaving the cavity to that from a blackbody having the area of the cavity opening and a temperature of the inner surfaces of the cavity. Determine the effective emissivity of the cavity. {Answer: ε effective =0.814} 2. A long, hemicylindrical shaped furnace with 1-m radius is used to heat treat sheet metal products and is comprised of three zones. The heating zone (1) is constructed from a ceramic plate of emissivity 0.85 and is operated at 1600 K by gas burners. The load zone
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hw09 - NCSU-MAE310 HW09 HOMEWORK#9 Provide a clear concise...

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