Answered: What limitations of the BP and SR…

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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Question

What limitations of the BP and SR methods are overcome by the NR methods?

Expert Solution

Step 1

In the Bubble Point (BP) method, the stage temperatures are calculated using the bubble point equation for that stage.

In Sum-Rates (SR) method, the temperature of the stage which is the dominant variable is calculated by solving energy balance equations for the stage.

Step 2

Limitation of the BP method is that this method usually gives the best results for the ideal or systems which are nearly ideal, having narrow-boiling range. For this method, the temperature of the stage must be affected majorly by the composition of the stage rather than the latent of vaporization for that stage.

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