Question 2The composite wall of an oven consists of three materials, two of whichare of known thermal conductivity, ka = 20 W/m•K and kc = 50 W/m•K,and known thickness, LA = 0.30 m and Lc = 0.15 m. The third material, B,which is sandwiched between materials A and C, is of known thickness, LB= 0.15 m, but unknown thermal conductivity ke.Under steady-state operating conditions, measurements reveal an outersurface temperature of T0= 20°C, an inner surface temperature of T; =600° C, and an oven air temperature of T= 800C. The inside convectioncoefficient h is known to be 25 W/m2 •K.a) Sketch the equivalent thermal resistance of the circuitb) What is the value of kg?Ts0Ts, iS,0kAkckBAirTo hLALBLc

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Question 2 The composite wall of an oven consists of three materials, two of which are of known thermal conductivity, ka = 20 W/m•K and ke = 50 W/m•K, and known thickness, La = 0.30 m and Lc = 0.15 m. The third material, B. which is sandwiched between materials A and C, is of known thickness, LB = 0.15 m, but unknown thermal conductivity kg. Under steady-state operating conditions, measurements reveal an outer surface temperature of T0= 20°C , an inner surface temperature of T; = 600° C, and an oven air temperature of T= 800C. The inside convection coefficient h is known to be 25 W/m² •K. a) Sketch the equivalent thermal resistance of the circuit b) What is the value of kg? T KA kc kB Air T, h LA Lc

Question 2 The composite wall of an oven consists of three materials, two of which are of known thermal conductivity, ka = 20 W/m•K and ke = 50 W/m•K, and known thickness, La = 0.30 m and Lc = 0.15 m. The third material, B. which is sandwiched between materials A and C, is of known thickness, LB = 0.15 m, but unknown thermal conductivity kg. Under steady-state operating conditions, measurements reveal an outer surface temperature of T0= 20°C , an inner surface temperature of T; = 600° C, and an oven air temperature of T= 800C. The inside convection coefficient h is known to be 25 W/m² •K. a) Sketch the equivalent thermal resistance of the circuit b) What is the value of kg? T KA kc kB Air T, h LA Lc

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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