Question-AnswerCategory: Food Engineeringa-flat-wall-is-exposed-to-an-environmental-temperature-of-38c-the-wall-is-covered-with-a-layer-of-insulation-2-5cm-thick-whose-thermal-conductivity-is-1-8w-m-k-and-the-temperature-of-the
Sumit asked 1 year ago

A flat wall is exposed to an environmental temperature of 38°C. The wall is covered with a layer of insulation 2.5cm thick whose thermal conductivity is 1.8W/(m K), and the temperature of the wall on the inside of the insulation is 320°C. The wall loses heat to the environment by convection. Compute the value of the convection heat-transfer coeffi cient that must be maintained on the outer surface of the insulation to ensure that the outer surface temperature does not exceed 40°C.

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