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Q1) A stirred-tank blending system (V=2m³) initially is full of pure water and is being fed caustic solution at a constant flow rate, q = 0.4 m³/min with inlet concentration Ci=50 kg/m³. Later, the caustic solution is turned off and the feed flow rate returned to pure water. (a) Fid process transfer function (b) Determine the dynamic response of C(t) (c) How long does it take for C(t) to reach 90% of its final value?

Q1) A stirred-tank blending system (V=2m³) initially is full of pure water and is being fed caustic solution at a constant flow rate, q = 0.4 m³/min with inlet concentration Ci=50 kg/m³. Later, the caustic solution is turned off and the feed flow rate returned to pure water. (a) Fid process transfer function (b) Determine the dynamic response of C(t) (c) How long does it take for C(t) to reach 90% of its final value?

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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Q1) A stirred-tank blending system (V=2m³) initially is full of pure water and is being fed caustic solution at a constant flow rate, q = 0.4 m³/min with inlet concentration Ci=50 kg/m³. Later, the caustic solution is turned off and the feed flow rate returned to pure water. (a) Fid process transfer function (b) Determine the dynamic response of C(t) (c) How long does it take for C(t) to reach 90% of its final value? Q2) Find the perturbation model Fa(t)=f (ha(t), hv(t)) for the following correlation. The Normal conditions for the system are Fa= 32 1/min, ha = hb= 0.5m F(t) = k/[0.8{ha(t) + h½(t) + 1}]
Transcribed Image Text:Q1) A stirred-tank blending system (V=2m³) initially is full of pure water and is being fed caustic solution at a constant flow rate, q = 0.4 m³/min with inlet concentration Ci=50 kg/m³. Later, the caustic solution is turned off and the feed flow rate returned to pure water. (a) Fid process transfer function (b) Determine the dynamic response of C(t) (c) How long does it take for C(t) to reach 90% of its final value? Q2) Find the perturbation model Fa(t)=f (ha(t), hv(t)) for the following correlation. The Normal conditions for the system are Fa= 32 1/min, ha = hb= 0.5m F(t) = k/[0.8{ha(t) + h½(t) + 1}]
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