The temperature distribution across a wall 0.25 m thick at a certain instant of time is T(x) = a + bx+cx², where T is in degrees Celsius and x is in meters, a = 200 C, b = -200 C/m, and c = 30 C/m². The wall has a thermal conductivity of 2.5 W/m.K. (a) Determine the heat flux into and out of the wall (q"in and q'out). (b) If the cold surface is exposed to a fluid at 100 C, what is the convection coefficient h? C- Degree Celsius 200°C h= q" In Choose.... q'out= Choose... Choose... box K = 2.5 w/m.k T(x)-200-200 x +30x² q" Out 142.7 C 11 =0.25 m Fluid Too = 100°C h

The temperature distribution across a wall 0.25 m thick at a certain instant of time is T(x) = a + bx+cx², where T is in degrees Celsius and x is in meters, a = 200 C, b = -200 C/m, and c = 30 C/m². The wall has a thermal conductivity of 2.5 W/m.K. (a) Determine the heat flux into and out of the wall (q"in and q'out). (b) If the cold surface is exposed to a fluid at 100 C, what is the convection coefficient h? C- Degree Celsius 200°C h= q" In Choose.... q'out= Choose... Choose... box K = 2.5 w/m.k T(x)-200-200 x +30x² q" Out 142.7 C 11 =0.25 m Fluid Too = 100°C h

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

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Question

The temperature distribution across a wall 0.25 m thick at a certain instant of time is T(x) = a + bx + cx², where T is in degrees Celsius and x is
in meters, a = 200 C, b = -200 C/m, and c = 30 C/m². The wall has a thermal conductivity of 2.5 W/m.K. (a) Determine the heat flux into and
out of the wall (q"in and q'out). (b) If the cold surface is exposed to a fluid at 100 C, what is the convection coefficient h?
- Degree Celsius
200°C
q" In-
q'in
q'out=
h =
Choose...
Choose....
Choose...
L₂x
K = 2.5 W/m.k
T(x)-200-200 x +30x²
q" Out
142.7 C
11
L=0.25 m
Fluid
Too = 100 °C
h

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