(b) Air at 37.8 C and pressure of 101.3 kPa flows past a sphere of naphthalene. The diameter of the sphere is 22.4 mm. The diffusivity of naphthalene in air at 37.8 C is 8.12×10*° m²/s and the vapor pressure of naphthalene is 70 Pa. The velocity of the air is 0.48 m/s. Assume naphthalene is dilute in air (ybm = 1). Given that the viscosity of air at 37.8 C is 1.90 × 10° Pa.s and the density is 1.137 kg/m. Calculate the mass-transfer coefficient (kc) and the flux (NA).
(b) Air at 37.8 C and pressure of 101.3 kPa flows past a sphere of naphthalene. The diameter of the sphere is 22.4 mm. The diffusivity of naphthalene in air at 37.8 C is 8.12×10*° m²/s and the vapor pressure of naphthalene is 70 Pa. The velocity of the air is 0.48 m/s. Assume naphthalene is dilute in air (ybm = 1). Given that the viscosity of air at 37.8 C is 1.90 × 10° Pa.s and the density is 1.137 kg/m. Calculate the mass-transfer coefficient (kc) and the flux (NA).
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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Transcribed Image Text:(b)
Air at 37.8 C and pressure of 101.3 kPa flows past a sphere of naphthalene.
The diameter of the sphere is 22.4 mm. The diffusivity of naphthalene in air at
37.8 C is 8.12×10*° m²/s and the vapor pressure of naphthalene is 70 Pa. The
velocity of the air is 0.48 m/s. Assume naphthalene is dilute in air (ybm = 1).
Given that the viscosity of air at 37.8 C is 1.90 × 10° Pa.s and the density is
1.137 kg/m. Calculate the mass-transfer coefficient (kc) and the flux (NA).
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