A spherical vessel of 0.5 m outside diameter is insulated with 0.2 m t – McqOptions

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1.	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
Answer» C. 67.93 W

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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 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 per m<sup>2</sup> based on inside area