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MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
Professor
Phoniex University
Oct-2001 - Nov-2016
6.57  Consider cross flow of gas X over an object having a characteristic length of L = 0.1 m. For a Reynolds num- ber of 1 X 104, the average heat transfer coefficient is 25 W/m2 · K. The same object is then impregnated with liquid Y and subjected to the same flow conditions. Given the following thermophysical properties, what is the average convection mass transfer coefficient?
Â
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v (m2/s)           k (W/m · K)           a (m2/s)
Â
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Gas XÂ Â Â Â Â Â Â Â Â Â Â Â Â 21 X 10-6Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 0.030Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 29 X 10-6
Liquid YÂ Â Â Â Â Â 3.75 X 10-7Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 0.665Â Â Â Â Â Â Â Â Â Â Â Â Â 1.65 X 10-7
Vapor YÂ Â Â Â Â Â Â 4.25 X 10-5Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 0.023Â Â Â Â Â Â Â Â Â Â Â Â Â 4.55 X 10-5
Mixture of gas X–vapor Y:           Sc = 0.72
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