Answered: The rate-based model requires component…

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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The rate-based model requires component mass-transfer coefficients, interfacial areas, and heat-transfer coefficients. How are the latter obtained?

Expert Solution

Step 1: Rate based Model description

The temperature difference is driving force for heat flow similarly, concentration difference is the driving force for diffusion of materials in a mixture then mass transfer coefficient act as heat transfer coefficient and the interface between chemical components become flexible and moving boundary.
The advantage of heat transfer is that thermal transport properties can be easily compared with basic transport properties like density or heat capacity. Hence, calculations become generalized and predictive.
For a given good correlation of heat transfer coefficients and accurate physical measurement of equipment, prediction of the performance of a heat exchanger is possible.
Similarly, a good correlation of film coefficients and equipment measurements like passes or packing size may help predict the performance of a tray or depth of a packing

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