Air at 100°F and 2 atm is being passed over a shallow bed of naphthalene spheres that are 0.5 inch in diameter at a superficial velocity (V0) of 5 ft s^-1.The MW of naphthalene is 128.2 g mol^-1, and its diffusivity in air at these operating conditions is 0.033 cm^2 s^-1. The porosity of the bed is 0.40, and the total surface area of the naphthalene particles is 86.3 ft^2 for each 1 ft^3 of packed bed. The viscosity of air under these conditions is 0.0184 cP and the density of air is 0.0023 g cm^-3. The equilibrium concentration of naphthalene in the air under these conditions is 0.006 mol L^-1. Assuming the concentration of the naphthalene in the air stream is negligible, estimate the initial evaporation rate of the naphthalene in pounds per second from 1 ft^3 of bed.
Air at 100°F and 2 atm is being passed over a shallow bed of naphthalene spheres that are 0.5 inch in diameter at a superficial velocity (V0) of 5 ft s^-1.The MW of naphthalene is 128.2 g mol^-1, and its diffusivity in air at these operating conditions is 0.033 cm^2 s^-1. The porosity of the bed is 0.40, and the total surface area of the naphthalene particles is 86.3 ft^2 for each 1 ft^3 of packed bed. The viscosity of air under these conditions is 0.0184 cP and the density of air is 0.0023 g cm^-3. The equilibrium concentration of naphthalene in the air under these conditions is 0.006 mol L^-1. Assuming the concentration of the naphthalene in the air stream is negligible, estimate the initial evaporation rate of the naphthalene in pounds per second from 1 ft^3 of bed.
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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Air at 100°F and 2 atm is being passed over a shallow bed of naphthalene spheres that are
0.5 inch in diameter at a superficial velocity (V0) of 5 ft s^-1.The MW of naphthalene is 128.2 g mol^-1,
and its diffusivity in air at these operating conditions is 0.033 cm^2 s^-1. The porosity of the bed is 0.40, and the total surface area of the naphthalene particles is 86.3 ft^2 for each 1 ft^3 of packed bed. The viscosity of air under these conditions is 0.0184 cP and the density of air is 0.0023 g cm^-3. The equilibrium concentration of naphthalene in the air under these conditions is 0.006 mol L^-1. Assuming the concentration of the naphthalene in the air stream is
negligible, estimate the initial evaporation rate of the naphthalene in pounds per second from 1 ft^3 of bed.
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