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• Given the following for a simple, countercurrent exchanger: • Hot fluid inlet = 225,F Cold fluid inlet = 75,F • Uo = 70 btu/ft2-F Ao = 26 ft2 • Cmin = 2600 btu/hr-F Cmax = 8200 btu/hr-F What is heat capacity rate ratio, Cr, btu/hr-F? What is the exchanger NTU? What is the exchanger effectiveness, e? What is the actual heat duty, btu/hr? Given the following for a simple, cocurrent exchanger: tube outside diameter, Do = 0.75 inches tube inside diameter, Di = 0.62 inches inside heat transfer coefficient, hi = 472 btu/ft2-hr-F outside heat transfer coefficient, ho = 614 btu/ft2-hr-F outside fouling factor, hfo = 584 btu/ft2-hr-F tube wall thermal conductivity, 26 = btu/hr-ft-F What is the tube wall log mean diameter, Dlm in inches? What is the overall heat transfer coefficient, Uo in btu/ft2-hr-F?

• Given the following for a simple, countercurrent exchanger: • Hot fluid inlet = 225,F Cold fluid inlet = 75,F • Uo = 70 btu/ft2-F Ao = 26 ft2 • Cmin = 2600 btu/hr-F Cmax = 8200 btu/hr-F What is heat capacity rate ratio, Cr, btu/hr-F? What is the exchanger NTU? What is the exchanger effectiveness, e? What is the actual heat duty, btu/hr? Given the following for a simple, cocurrent exchanger: tube outside diameter, Do = 0.75 inches tube inside diameter, Di = 0.62 inches inside heat transfer coefficient, hi = 472 btu/ft2-hr-F outside heat transfer coefficient, ho = 614 btu/ft2-hr-F outside fouling factor, hfo = 584 btu/ft2-hr-F tube wall thermal conductivity, 26 = btu/hr-ft-F What is the tube wall log mean diameter, Dlm in inches? What is the overall heat transfer coefficient, Uo in btu/ft2-hr-F?

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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• Given the following for a simple, countercurrent exchanger: • Hot fluid inlet = 225,F Cold fluid inlet = 75,F • Uo = 70 btu/ft2-F Ao = 26 ft2 • Cmin = 2600 btu/hr-F Cmax = 8200 btu/hr-F What is heat capacity rate ratio, Cr, btu/hr-F? What is the exchanger NTU? What is the exchanger effectiveness, e? What is the actual heat duty, btu/hr?
Transcribed Image Text:• Given the following for a simple, countercurrent exchanger: • Hot fluid inlet = 225,F Cold fluid inlet = 75,F • Uo = 70 btu/ft2-F Ao = 26 ft2 • Cmin = 2600 btu/hr-F Cmax = 8200 btu/hr-F What is heat capacity rate ratio, Cr, btu/hr-F? What is the exchanger NTU? What is the exchanger effectiveness, e? What is the actual heat duty, btu/hr?
Given the following for a simple, cocurrent exchanger: tube outside diameter, Do = 0.75 inches tube inside diameter, Di = 0.62 inches inside heat transfer coefficient, hi = 472 btu/ft2-hr-F outside heat transfer coefficient, ho = 614 btu/ft2-hr-F outside fouling factor, hfo = 584 btu/ft2-hr-F tube wall thermal conductivity, 26 = btu/hr-ft-F What is the tube wall log mean diameter, Dlm in inches? What is the overall heat transfer coefficient, Uo in btu/ft2-hr-F?
Transcribed Image Text:Given the following for a simple, cocurrent exchanger: tube outside diameter, Do = 0.75 inches tube inside diameter, Di = 0.62 inches inside heat transfer coefficient, hi = 472 btu/ft2-hr-F outside heat transfer coefficient, ho = 614 btu/ft2-hr-F outside fouling factor, hfo = 584 btu/ft2-hr-F tube wall thermal conductivity, 26 = btu/hr-ft-F What is the tube wall log mean diameter, Dlm in inches? What is the overall heat transfer coefficient, Uo in btu/ft2-hr-F?
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