It is required to insulate a kitchen oven with corkboard (k = 0.043 W/(m K)) so that the heat losses from the oven does not exceed 400 W/m2 when the outer surface of the oven is at 225°C and the outer surface of the insulation is at 40°C. The thickness of insulation required is nearly

It is required to insulate a kitchen oven with corkboard (k = 0.043 W

1.	It is required to insulate a kitchen oven with corkboard (k = 0.043 W/(m K)) so that the heat losses from the oven does not exceed 400 W/m2 when the outer surface of the oven is at 225°C and the outer surface of the insulation is at 40°C. The thickness of insulation required is nearly
A.	1 cm
B.	2 cm
C.	3 cm
D.	4 cm
Answer» C. 3 cm

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It is required to insulate a kitchen oven with corkboard (k = 0.043 W/(m K)) so that the heat losses from the oven does not exceed 400 W/m2 when the outer surface of the oven is at 225°C and the outer surface of the insulation is at 40°C. The thickness of insulation required is nearly

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