Since the Prandtl number and the heat capacity of air are nearly independent of temperature, Eq. (12.34)
Question:
Since the Prandtl number and the heat capacity of air are nearly independent of temperature, Eq. (12.34) seems to indicate that hi for air increases with μ0.2
(a) Explain this anomaly and determine the approximate dependence of hi on temperature, using hi ∝ Tn.
(b) How does hi for air vary with temperature if the linear velocity, rather than the mass velocity, is kept constant?
Eq. 12.34
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Related Book For
Unit Operations Of Chemical Engineering
ISBN: 9780072848236
7th Edition
Authors: Warren McCabe, Julian Smith, Peter Harriott
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