Consider a small surface of area A₁ = 7 x 10m², which emits diffusely with a total, hemispherical emissive power of E₁ = 3 × 10%; W m² ከ1 n2 02 = 30° A2 to 12 = 0.6m
Consider a small surface of area A₁ = 7 x 10m², which emits diffusely with a total, hemispherical emissive power of E₁ = 3 × 10%; W m² ከ1 n2 02 = 30° A2 to 12 = 0.6m
Elements Of Electromagnetics
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ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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Transcribed Image Text:3. Consider a small surface of area A₁ = 7 x 10-4m², which emits diffusely with a total,
W
m²
hemispherical emissive power of E₁
n₁
0₁
A₁
= 3 x 104.
60%
n2
0₂ = 30°
(b) What is the irradiation G2 on A₂?
A₂
r2 = 0.6m
Fig.3. Surface irradiation between two surfaces
(a) At what rate is this emission intercepted by a small surface of area A₁ = 3 × 10-4m²,
which is oriented as shown?
(c) For zenith angles of and 0₂ = 0,30, and 60°, plot G2 as a function of the separation
distance for 0.3 ≤ ₂ ≤ 1.2
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