Equimolar Counter Diffusion in Arnold Cell The Arnold cell, as shown in the figure, is maintained at 25oC and 1 atm. Under the conditions, the saturated humidity of water in air is 0.0189 lb H2O/lb dry air and the diffusivity of water vapor in air is 0.22 cm2/s. a) Find the initial evaporation rate of water, in the unit of centimeter per second of surface velocity. (Ans: 4.8 �10-7 cm/s)
Equimolar Counter Diffusion in Arnold Cell The Arnold cell, as shown in the figure, is maintained at 25oC and 1 atm. Under the conditions, the saturated humidity of water in air is 0.0189 lb H2O/lb dry air and the diffusivity of water vapor in air is 0.22 cm2/s. a) Find the initial evaporation rate of water, in the unit of centimeter per second of surface velocity. (Ans: 4.8 �10-7 cm/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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Equimolar Counter Diffusion in Arnold Cell
The Arnold cell, as shown in the figure, is maintained at 25oC and 1 atm. Under the conditions, the saturated humidity of water in air is 0.0189 lb H2O/lb dry air and the diffusivity of water vapor in air is 0.22 cm2/s.
a) Find the initial evaporation rate of water, in the unit of centimeter per second of surface velocity. (Ans: 4.8 �10-7 cm/s)
Transcribed Image Text:Problem 1. Equimolar Counte
Dry air
10 cm
1 mm
i.d.
H₂O
P = 1 atm
T-25 °C
T
at
0.
0.
a
b
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