A thin-walled, uninsulated O.3-m-diameter duct is used to route chilled air at 0.05 kg/s through the attic
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A thin-walled, uninsulated O.3-m-diameter duct is used to route chilled air at 0.05 kg/s through the attic of a large commercial building. The attic air is at 37°C, and natural circulation provides a convection coefficient of 2 W/m2 ∙ K at the outer surface of the duct. If chilled air enters a 15-m-Iong duct at 7°C, what is its exit temperature and the rate of heat gain? Properties of the chilled air may be evaluated at an assumed average temperature of 300 K.
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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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