Consider steady-state heat conduction across the thickness in a plane wall of thickness 0.6 m. The wall has a normal area 1.5 m2 and is made up of material of thermal couductivity 0.4 W/m°C. There is no generation of thermal energy within the wall. The temperatures on the two sides are 800°C and 300°C. The thermal resistance of the wall is:

Consider steady-state heat conduction across the thickness in a plane

1.	Consider steady-state heat conduction across the thickness in a plane wall of thickness 0.6 m. The wall has a normal area 1.5 m2 and is made up of material of thermal couductivity 0.4 W/m°C. There is no generation of thermal energy within the wall. The temperatures on the two sides are 800°C and 300°C. The thermal resistance of the wall is:
A.	1.5 W/°C
B.	1 W/°C
C.	1.5 °C/W
D.	1 °C/W
Answer» E.

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