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(a) Two surfaces, A and B has a temperature of 4500 K and different spectral emissivity as shown in Figure 3.1. By assuming Stefan Boltzmann constant is 5.67 x 10* W/m-K', determine: i. the average emissivity for each surface, ii. emissive power for each surface, wavelength of surface A at which spectral emissive power will be a maximum, and

(a) Two surfaces, A and B has a temperature of 4500 K and different spectral emissivity as shown in Figure 3.1. By assuming Stefan Boltzmann constant is 5.67 x 10* W/m-K', determine: i. the average emissivity for each surface, ii. emissive power for each surface, wavelength of surface A at which spectral emissive power will be a maximum, and

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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(a) Two surfaces, A and B has a temperature of 4500 K and different spectral emissivity as shown in Figure 3.1. By assuming Stefan Boltzmann constant is 5.67 x 10* W/m²-K', determine: i. the average emissivity for each surface, emissive power for each surface, iii. wavelength of surface A at which spectral emissive power will be a maximum, and iv. which surface is more suitable as a solar absorber? Justify your answer. 0.7 0.6 0.2 0.2 0.1 0.1 A. um A. um (a) (b) Figure 3.1 Variation of spectral; (a) Surface A, (b) Surface B
Transcribed Image Text:(a) Two surfaces, A and B has a temperature of 4500 K and different spectral emissivity as shown in Figure 3.1. By assuming Stefan Boltzmann constant is 5.67 x 10* W/m²-K', determine: i. the average emissivity for each surface, emissive power for each surface, iii. wavelength of surface A at which spectral emissive power will be a maximum, and iv. which surface is more suitable as a solar absorber? Justify your answer. 0.7 0.6 0.2 0.2 0.1 0.1 A. um A. um (a) (b) Figure 3.1 Variation of spectral; (a) Surface A, (b) Surface B
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