An opaque surface with the prescribed spectral, hemispherical reflectivity distribution is subjected to the spectral irradiation shown Assume that p₁ = 0.5 and G₁ = 650 W/m²-μm. 1.0 P₁ 5 10 15 λ (um) (a) Determine the total irradiation on the surface, in W/m². G = i W/m² (b) Determine the radiant flux that is absorbed by the surface, in W/m². Gabs W/m² (c) What is the total, hemispherical absorptivity of this surface? a = i G₂(W/m² μm) G₁ 5 10 15 20 λ (μη)

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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An opaque surface with the prescribed spectral, hemispherical reflectivity distribution is subjected to the spectral irradiation shown.
Assume that p₁ = 0.5 and G₁ = 650 W/m²-μm.
G₁
1.0
P₁
0 5
10
15
λ(um)
(a) Determine the total irradiation on the surface, in W/m².
G =
W/m²
(b) Determine the radiant flux that is absorbed by the surface, in W/m².
Gabs = i
W/m²
(c) What is the total, hemispherical absorptivity of this surface?
α = i
G₂(W/m².μm)
5
10
15
20
λ (um)
Transcribed Image Text:An opaque surface with the prescribed spectral, hemispherical reflectivity distribution is subjected to the spectral irradiation shown. Assume that p₁ = 0.5 and G₁ = 650 W/m²-μm. G₁ 1.0 P₁ 0 5 10 15 λ(um) (a) Determine the total irradiation on the surface, in W/m². G = W/m² (b) Determine the radiant flux that is absorbed by the surface, in W/m². Gabs = i W/m² (c) What is the total, hemispherical absorptivity of this surface? α = i G₂(W/m².μm) 5 10 15 20 λ (um)
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