Water in the bottom of a narrow metal tube is held at constant temperature of 20oC. The total pressure of air (assumed dry) is 101.325kPa at temperature of 20oC. Water evaporates and diffuses through the air in the tube and diffusion path of 0.5 ft long. Calculate the rate of evaporation in lbmole/hr-ft2 and kgmole/m2-s taking the diffusivity of water vapor at 20oC and 1 atm pressure is 0.25 x 10-4 m2/s.
Water in the bottom of a narrow metal tube is held at constant temperature of 20oC. The total pressure of air (assumed dry) is 101.325kPa at temperature of 20oC. Water evaporates and diffuses through the air in the tube and diffusion path of 0.5 ft long. Calculate the rate of evaporation in lbmole/hr-ft2 and kgmole/m2-s taking the diffusivity of water vapor at 20oC and 1 atm pressure is 0.25 x 10-4 m2/s.
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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Water in the bottom of a narrow metal tube is held at constant temperature of 20oC. The total pressure of air (assumed dry) is 101.325kPa at temperature of 20oC. Water evaporates and diffuses through the air in the tube and diffusion path of 0.5 ft long. Calculate the rate of evaporation in lbmole/hr-ft2 and kgmole/m2-s taking the diffusivity of water vapor at 20oC and 1 atm pressure is 0.25 x 10-4 m2/s.
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