The presence of a small amount of air may cause a significant reduction in the heat rate
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The presence of a small amount of air may cause a significant reduction in the heat rate to a water-cooled steam condenser surface. For a clean surface with pure steam and the prescribed conditions, the condensate rate is 0.020 kg/m2 ? s. With the presence of stagnant air in the steam, the condensate surface temperature drops from 28 to 24?C and the condensate rate is reduced by a factor of 2. For the air-steam mixture, determine the partial pressure of air as a function of distance from the condensate film.
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28 Pure steam Steam and 24 20 Condensate Condensate (3.4
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KNOWN Clean surface with pure steam has condensate rate of 0020 kgms for the prescribed conditions W...View the full answer
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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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