Homework Help is Here – Start Your Trial Now!
Engineering
Chemical Engineering
1. Reverse feed double-effect evaporator is used to concentrate a feed of 10% solids to 20%. The heat-transfer coefficients are U₁ = 300 and U₂ = 600 btu/hr-ft2-°F for each evaporator, each of which has a surface area of 800 ft².

1. Reverse feed double-effect evaporator is used to concentrate a feed of 10% solids to 20%. The heat-transfer coefficients are U₁ = 300 and U₂ = 600 btu/hr-ft2-°F for each evaporator, each of which has a surface area of 800 ft².

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
See similar textbooks
icon
Related questions
Question
Please answer completely and legibly.
1. Reverse feed double-effect evaporator is used to concentrate a feed of 10% solids to 20%. The heat-transfer coefficients are U₁ = 300 and U₂ = 600 btu/hr-ft2-°F for each evaporator, each of which has a surface area of 800 ft². Both the rise in boiling point and the heat of solution may be regarded as insignificant. The feed enters the 2nd evaporator at 100°F, and steam enters the first evaporator number 1 at 100 psi. The 2nd evaporator's vapor space is under 2 psia of pressure. Assume that liquid water has the same thermal capacity as all other liquid solutions. Determine the solution's feed rate (F) and product rate (L1) for a 20% solids solution. Initial assumptions for feed rate and inlet steam temperature are 1000 lbm/hr and 350°F.
Transcribed Image Text:1. Reverse feed double-effect evaporator is used to concentrate a feed of 10% solids to 20%. The heat-transfer coefficients are U₁ = 300 and U₂ = 600 btu/hr-ft2-°F for each evaporator, each of which has a surface area of 800 ft². Both the rise in boiling point and the heat of solution may be regarded as insignificant. The feed enters the 2nd evaporator at 100°F, and steam enters the first evaporator number 1 at 100 psi. The 2nd evaporator's vapor space is under 2 psia of pressure. Assume that liquid water has the same thermal capacity as all other liquid solutions. Determine the solution's feed rate (F) and product rate (L1) for a 20% solids solution. Initial assumptions for feed rate and inlet steam temperature are 1000 lbm/hr and 350°F.
Expert Solution
steps

Step by step

Solved in 4 steps with 3 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Recommended textbooks for you
Introduction to Chemical Engineering Thermodynami…
Introduction to Chemical Engineering Thermodynami…
Chemical Engineering
ISBN:
9781259696527
Author:
J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:
McGraw-Hill Education
Elementary Principles of Chemical Processes, Bind…
Elementary Principles of Chemical Processes, Bind…
Chemical Engineering
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY
Elements of Chemical Reaction Engineering (5th Ed…
Elements of Chemical Reaction Engineering (5th Ed…
Chemical Engineering
ISBN:
9780133887518
Author:
H. Scott Fogler
Publisher:
Prentice Hall
Process Dynamics and Control, 4e
Process Dynamics and Control, 4e
Chemical Engineering
ISBN:
9781119285915
Author:
Seborg
Publisher:
WILEY
Industrial Plastics: Theory and Applications
Industrial Plastics: Theory and Applications
Chemical Engineering
ISBN:
9781285061238
Author:
Lokensgard, Erik
Publisher:
Delmar Cengage Learning
Unit Operations of Chemical Engineering
Unit Operations of Chemical Engineering
Chemical Engineering
ISBN:
9780072848236
Author:
Warren McCabe, Julian C. Smith, Peter Harriott
Publisher:
McGraw-Hill Companies, The
SEE MORE TEXTBOOKS