A flat wall is exposed to an environmental temperature of 38C The wall is covered with a layer of insulation 2 5 cm thick whose thermal conductivity is 1 4 W m C, and the temperature of the wall on the inside of the insulation is 315C The wall loses heat to the environment by convection Compute the value of the convection heat transfer coefficient that must be maintained on the outer surface of the insulation to ensure that the outer surface temperature does not exceed 41C

Question: A flat wall is exposed to an environmental temperature of 38C. The wall is covered with a layer of insulation 2.5 cm thick whose thermal

A flat wall is exposed to an environmental temperature of 38ºC. The wall is covered with a layer of insulation 2.5 cm thick whose thermal conductivity is 1.4 W/m· ºC, and the temperature of the wall on the inside of the insulation is 315ºC. The wall loses heat to the environment by convection. Compute the value of the convection heat-transfer coefficient that must be maintained on the outer surface of the insulation to ensure that the outer-surface temperature does not exceed 41ºC.

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