A heat flux gage of 4-mm diameter is positioned nor-mal to
Chapter 13, Problem 13.16(choose chapter or problem)
A heat flux gage of 4-mm diameter is positioned nor-mal to and 1 m from the 5-mm-diameter aperture of ablackbody furnace at 1000 K. The diffuse, gray covershield (??0.2) of the furnace has an outer diameterof 100 mm and its temperature is 350 K. The furnaceand gage are located in a large room whose walls havean 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 ofthe furnace?(b) What is the irradiation on the gage due to radia-tion from the cover and aperture?
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