What thickness of urethane foam is required to reduce the

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The wall of a spherical tank of 1-m diameter contains an exothermic chemical reaction and is at 200oC when the ambient air temperature is 25oC. What thickness of urethane foam is required to reduce the exterior temperature to 40oC, assuming the convection coefficient is 20 W/m2K for both situations? What is the percentage reduction in heat rate achieved by using the insulation?

Reference no: EM13608074

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