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.

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter2: Steady Heat Conduction

Section: Chapter Questions

Problem 2.47P

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