Module 4: Heat transfer calculations, miscellaneous topics and carbon credit
Lecture 33: Heat flow in furnaces
Exercise -4
A furnace is losing heat into surrounding. The outside shell of a furnace has surface temperature The surrounding temperature is . The emissivity of surface is 0.8. Compare heat loss by radiation with that of convection .
The surrounding temperature is 
. The emissivity of surface is 0.8. Compare heat loss by radiation with that of convection .
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