A diffuse surface at 1600 K has the spectral, hemispherical emissivity shown as follows. 1. Determine the total hemispherical emissivity and the total emissive power. 2. At what wavelength will the spectral emissive power be a maximum?

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)
8th Edition
ISBN:9781305387102
Author:Kreith, Frank; Manglik, Raj M.
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Chapter11: Heat Transfer By Radiation
Section: Chapter Questions
Problem 11.3P: Determine the total average hemispherical emissivity and the emissive power of a surface that has a...
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Example 6
A diffuse surface at 1600 K has the spectral, hemispherical emissivity shown as follows.
1. Determine the total hemispherical emissivity and the total emissive power.
2. At what wavelength will the spectral emissive power be a maximum?
(Y) 3
1.0
0.8
0.4
E1
2
E2
λ (μm)
5
T = 1600 K
λ = 2 μm
λ = 5 μm
Transcribed Image Text:Example 6 A diffuse surface at 1600 K has the spectral, hemispherical emissivity shown as follows. 1. Determine the total hemispherical emissivity and the total emissive power. 2. At what wavelength will the spectral emissive power be a maximum? (Y) 3 1.0 0.8 0.4 E1 2 E2 λ (μm) 5 T = 1600 K λ = 2 μm λ = 5 μm
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