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Two streams with densities of around 900 kg/(m ^3) each are blended in a stirred-tank process with a continuous liquid holdup of 2m^ 3. During mixing, there is no change in density. (a) Assume the process has been running for a while with flow rates of 500 kg per minute for the first feed and 200 kg per minute for the second, with feed compositions (mass fractions) of x_1 = 0.4 and x_2 = 0.75. What is the value of (x) in steady state? (B) Assume that w_1 abruptly changes from 500 min and stays at the new value. Plot an expression for x(t) after determining it. (C) Repetition of section (b) in the event that w2 (instead of underlining w_1) abruptly switches from kg/min and stays put.

Two streams with densities of around 900 kg/(m ^3) each are blended in a stirred-tank process with a continuous liquid holdup of 2m^ 3. During mixing, there is no change in density. (a) Assume the process has been running for a while with flow rates of 500 kg per minute for the first feed and 200 kg per minute for the second, with feed compositions (mass fractions) of x_1 = 0.4 and x_2 = 0.75. What is the value of (x) in steady state? (B) Assume that w_1 abruptly changes from 500 min and stays at the new value. Plot an expression for x(t) after determining it. (C) Repetition of section (b) in the event that w2 (instead of underlining w_1) abruptly switches from kg/min and stays put.

Introduction to Chemical Engineering Thermodynamics
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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Two streams with densities of around 900 kg/(m ^3) each are blended in a stirred-tank process with a continuous liquid holdup of 2m^ 3. During mixing, there is no change in density.

(a) Assume the process has been running for a while with flow rates of 500 kg per minute for the first feed and 200 kg per minute for the second, with feed compositions (mass fractions) of x_1 = 0.4 and x_2 = 0.75. What is the value of (x) in steady state? 

(B) Assume that w_1 abruptly changes from 500 min and stays at the new value. Plot an expression for x(t) after determining it.

(C) Repetition of section (b) in the event that w2 (instead of underlining w_1) abruptly switches from kg/min and stays put.

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