ال جان ورق Q: A paint baking oven consists of a long, triangular duct in which a heated surface is maintained at 1200 K and another surface is insulated. Painted panels, which are maintained at 500 K, occupy the third surface. The triangle is of width W-1 m on a side, and the heated and insulated surfaces have an emissivity of 0.8. The emissivity of the panels is 0.4. During steady-state operation, at what rate must energy be supplied to the heated side per unit length of the duct to maintain its temperature at 1200 K? What is the temperature of the insulated surface? Equilateral triangle x=08 TR 7₁ - 1200 K 40.8 Waim-A T₂ = 500 K 6=0.4

Elements Of Electromagnetics
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Author:Sadiku, Matthew N. O.
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%VA II. Q
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Q:A paint baking oven consists of a long, triangular duct in which a heated surface is maintained
at 1200 K and another surface is insulated. Painted panels, which are maintained at 500 K, occupy
the third surface. The triangle is of width W-1 m on a side, and the heated and insulated surfaces
have an emissivity of 0.8. The emissivity of the panels is 0.4. During steady-state operation, at
what rate must energy be supplied to the heated side per unit length of the duct to maintain its
temperature at 1200 K? What is the temperature of the insulated surface?
Equilateral
triangle
Ex=0.8
To
T₁-1200 K
=0.8
the
|||
E
Wim
استان ضرر
T₁= 500 K
4₂-0.4
۳:۱۱
O
Transcribed Image Text:%VA II. Q > Q:A paint baking oven consists of a long, triangular duct in which a heated surface is maintained at 1200 K and another surface is insulated. Painted panels, which are maintained at 500 K, occupy the third surface. The triangle is of width W-1 m on a side, and the heated and insulated surfaces have an emissivity of 0.8. The emissivity of the panels is 0.4. During steady-state operation, at what rate must energy be supplied to the heated side per unit length of the duct to maintain its temperature at 1200 K? What is the temperature of the insulated surface? Equilateral triangle Ex=0.8 To T₁-1200 K =0.8 the ||| E Wim استان ضرر T₁= 500 K 4₂-0.4 ۳:۱۱ O
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