The wall of a spherical tank of 1-m diameter contains an exothermic chemical reaction and is at
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The wall of a spherical tank of 1-m diameter contains an exothermic chemical reaction and is at 200°C when the ambient air temperature is 25°C. What thickness of urethane foam is required to reduce the exterior temperature to 40°C, assuming the convection coefficient is 20 W/m2 ∙ K for both situations? What is the percentage reduction in heat rate achieved by using the insulation?
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Related Book For 
Fundamentals of Heat and Mass Transfer
ISBN: 978-0471457282
6th Edition
Authors: Incropera, Dewitt, Bergman, Lavine
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