The thermal conductivity of a sheet of rigid extruded


The thermal conductivity of a sheet of rigid, extruded insulation is reported to be k = 0.029 W/m· K. The measured temperature difference across a 20-mm-thick sheet of the material is T1 - T2 = 10° C.

(a) What is the heat flux through a 2 m × 2 m sheet of the insulation?

(b) What is the rate of heat transfer through the sheet of insulation?

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Mechanical Engineering: The thermal conductivity of a sheet of rigid extruded
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