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Que. A spherical vessel of 0.5 m outside diameter is insulated with 0.2 m thickness of insulation of thermal conductivity 0.04 W/m degree. The surface temperature of the vessel is – 195 degree Celsius and outside air is at 10 degree Celsius. Determine heat flow
a. – 47.93 W
b. – 57.93 W
c. – 67.93 W
d. – 77.93 W
Correct Answer:– 57.93 W
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