4 A 20 cm thick slab of aluminums (k = 230 W/mK) is placed in contact w ith a 15 cm thick stainless-steel plate (k=15 W/mK). Due to roughness, 40 percent of the area is in direct contact and the gap (0.0002 m) is filled with air (k = 0.032 W/mK). The differ ence in temperature betw een the two outside surfaces of the plate is 200°C Estimate (i) the heat flow rate, (i) the contact resistance, and (iii) the drop in temperature at the interface. %3D Al Air 06 1m Steel

4 A 20 cm thick slab of aluminums (k = 230 W/mK) is placed in contact w ith a 15 cm thick stainless-steel plate (k=15 W/mK). Due to roughness, 40 percent of the area is in direct contact and the gap (0.0002 m) is filled with air (k = 0.032 W/mK). The differ ence in temperature betw een the two outside surfaces of the plate is 200°C Estimate (i) the heat flow rate, (i) the contact resistance, and (iii) the drop in temperature at the interface. %3D Al Air 06 1m Steel

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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