A heat flux gage of 4-mm diameter is positioned normal to
Chapter , Problem 13.16(choose chapter or problem)
A heat flux gage of 4-mm diameter is positioned normal to and 1 m from the 5-mm-diameter aperture of a blackbody furnace at 1000 K. The diffuse, gray cover shield ( 0.2) of the furnace has an outer diameter of 100 mm and its temperature is 350 K. The furnace and gage are located in a large room whose walls have an emissivity of 0.8 and are at 300 K. (a) What is the irradiation on the gage, Gg (W/m2 ), considering only emission from the aperture of the furnace? (b) What is the irradiation on the gage due to radiation from the cover and aperture?
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