Hot gases at 280°C flow on one side of a metal plate of 10mm thickness and air at 35°C flows on the other side. The heat ransfer coefficient of the gases is 31.5 W/m²-K and that of the air is 32 W/m²-K. Calculate the over-all transfer coefficient. A. 15.82 W/m²-K B. 16.82 W/m²-K C. 14.82 W/m²-k D. 17.82 W/m²-K

Introduction to Chemical Engineering Thermodynamics
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Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
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Hot gases at 280°C flow on one side of a metal plate of 10mm thickness and air at 35°C flows on the other side. The heat ransfer coefficient of the gases is 31.5 W/m²-K and that of the air is 32 W/m²-K. Calculate the over-all transfer coefficient.

A. 15.82 W/m²-K
B. 16.82 W/m²-K
C. 14.82 W/m²-k
D. 17.82 W/m²-K

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