1. Consider one-dimensional conduction in a plane composite wall of two materials, A and B. The wall of material A has uniform heat generation q 2x106 W/m³, kA 100 W/m.K and thickness = 100 W/m.K and thickness LA = 100 mm. The wall material B has no generation with kB LB = 10mm. The inner surface of material A is well insulated, while the outer surface of material B is cooled by a water stream with T = 20 C and h =1000 W/m².K (a) What is the temperature at the cooled surface ( hint: apply an energy balance for the walls A+B)? (b) What is the temperature at the interface between A and B? (c) What is the temperature at the insulated surface of A?
1. Consider one-dimensional conduction in a plane composite wall of two materials, A and B. The wall of material A has uniform heat generation q 2x106 W/m³, kA 100 W/m.K and thickness = 100 W/m.K and thickness LA = 100 mm. The wall material B has no generation with kB LB = 10mm. The inner surface of material A is well insulated, while the outer surface of material B is cooled by a water stream with T = 20 C and h =1000 W/m².K (a) What is the temperature at the cooled surface ( hint: apply an energy balance for the walls A+B)? (b) What is the temperature at the interface between A and B? (c) What is the temperature at the insulated surface of A?
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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Parts A-C solve carefully and label them ( use image below)
Transcribed Image Text:1. Consider one-dimensional conduction in a plane composite wall of two materials, A and B. The wall
of material A has uniform heat generation q
= 2x106 W/m³, ka
100 W/m.K and thickness
LA
100 mm. The wall material B has no generation with kB
= 100 W/m.K and thickness
LB
= 10mm. The inner surface of material A is well insulated, while the outer surface of material B is
cooled by a water stream with T= 20 C and h=1000 W/m².K
(a) What is the temperature at the cooled surface ( hint: apply an energy balance for the walls A+B)?
(b) What is the temperature at the interface between A and B?
(c) What is the temperature at the insulated surface of A?
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