2. (a) i. Freshly painted flat panels are cured by placing them under a planer radiation source as shown in the diagram below. The panel and source may be approximated as blackbodies at temperatures of Tp = 227 °C and T, = 627 °C, respectively. The panel and source are of widths Wp= 300 mm and W, = 150 mm, very long (in the direction perpendicular to the paper). and are separated by a distance of L = 150mm. If the region between the panel and source is not enclosed, but is exposed to large surroundings at 27 °C, what is the rate at which electric power must be supplied to the radiation source per unit length? (a = 5.67 x 10* W/m² K*). Discuss the rational used to model the situation described in ure ii. question above and explain the assumptions made. sur 0.15 m Wp Figure Q 5(a) (b) i. Determine the shape factor F12, for the rectangles shown in the Figure Q 5(b) below. ii. Substantiate any additional areas used in the analysis. 1 m 0.5 m 2

2. (a) i. Freshly painted flat panels are cured by placing them under a planer radiation source as shown in the diagram below. The panel and source may be approximated as blackbodies at temperatures of Tp = 227 °C and T, = 627 °C, respectively. The panel and source are of widths Wp= 300 mm and W, = 150 mm, very long (in the direction perpendicular to the paper). and are separated by a distance of L = 150mm. If the region between the panel and source is not enclosed, but is exposed to large surroundings at 27 °C, what is the rate at which electric power must be supplied to the radiation source per unit length? (a = 5.67 x 10* W/m² K*). Discuss the rational used to model the situation described in ure ii. question above and explain the assumptions made. sur 0.15 m Wp Figure Q 5(a) (b) i. Determine the shape factor F12, for the rectangles shown in the Figure Q 5(b) below. ii. Substantiate any additional areas used in the analysis. 1 m 0.5 m 2

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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