B: A composite wall is consist of two blocks A and B. Wall A (ka- 75 W/m. °C and thickness La)contains uniform heat generation q = 1.5×106 W/m³ and isolated from the left side. Wall B(kb 150 W/m. °C and thickness L) has no generation and exposed from the right side tomoving water (To= 30 C and h=1000 W/m2). If the rate of heat flux transfer to water is75000 W/m², and the temperature at the interface between block A and B is 115 C, determine:1- The thickness of block A and B.2- The inner and outer surface temperature of the composite.

Given:The thermal conductivity of wall A is and wall B is .The heat generation in wall A is .The…

B: A composite wall is consist of two blocks A and B. Wall A (ka- 75 W/m. °C and thickness La) contains uniform heat generation q = 1.5×106 W/m³ and isolated from the left side. Wall B (kb 150 W/m. °C and thickness Lb) has no generation and exposed from the right side to moving water (T.= 30 C and h=1000 W/m2). If the rate of heat flux transfer to water is 75000 W/m², and the temperature at the interface between block A and B is 115 C, determine: 1- The thickness of block A and B. 2- The inner and outer surface temperature of the composite.

B: A composite wall is consist of two blocks A and B. Wall A (ka- 75 W/m. °C and thickness La) contains uniform heat generation q = 1.5×106 W/m³ and isolated from the left side. Wall B (kb 150 W/m. °C and thickness Lb) has no generation and exposed from the right side to moving water (T.= 30 C and h=1000 W/m2). If the rate of heat flux transfer to water is 75000 W/m², and the temperature at the interface between block A and B is 115 C, determine: 1- The thickness of block A and B. 2- The inner and outer surface temperature of the composite.

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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Concept explainers

Conduction and Convection

When energy travels from one object to another it is said to have undergone heat transfer. Heat transfer is nothing but the transfer of thermal energy or internal energy from one thing to another, like e.g., when a vessel with water, kept on top of a burner, heats up because of the flame underneath it.

Question

B: A composite wall is consist of two blocks A and B. Wall A (ka- 75 W/m. °C and thickness La)
contains uniform heat generation q = 1.5×106 W/m³ and isolated from the left side. Wall B
(kb 150 W/m. °C and thickness L) has no generation and exposed from the right side to
moving water (To= 30 C and h=1000 W/m2). If the rate of heat flux transfer to water is
75000 W/m², and the temperature at the interface between block A and B is 115 C, determine:
1- The thickness of block A and B.
2- The inner and outer surface temperature of the composite.

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