An existing forced-circulation evaporator with a heat-transfer area of 232 m2 is to be used to concentrate 44 wt% NaOH to 65 wt% NaOH using steam at 3 atm gage (barometer reads 1 atm). The feed temperature will be 40oC and pressure in the vapor space of the evaporator will be 2.0 psia. The overall heat-transfer coefficient for the given conditions is estimated to be 2,000 W/m2 - oC. The density of the feed solution is 1,450 kg/m3 . Neglecting heat losses from the evaporator, determine the: (a) temperature of the solution in the evaporator in oC; (b) heating steam in kg/h; (c) m3 /h of feed; (d) kg/ h of concentrated NaOH solution; (e) rate of evaporation in kg/h.
An existing forced-circulation evaporator with a heat-transfer area of 232 m2 is to be used to concentrate 44 wt% NaOH to 65 wt% NaOH using steam at 3 atm gage (barometer reads 1 atm). The feed temperature will be 40oC and pressure in the vapor space of the evaporator will be 2.0 psia. The overall heat-transfer coefficient for the given conditions is estimated to be 2,000 W/m2 - oC. The density of the feed solution is 1,450 kg/m3 . Neglecting heat losses from the evaporator, determine the: (a) temperature of the solution in the evaporator in oC; (b) heating steam in kg/h; (c) m3 /h of feed; (d) kg/ h of concentrated NaOH solution; (e) rate of evaporation in kg/h.
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
Related questions
Question
An existing forced-circulation evaporator with a heat-transfer area of 232 m2 is to be used to concentrate 44 wt% NaOH to 65 wt% NaOH using steam at 3 atm gage (barometer reads 1 atm). The feed temperature will be 40oC and pressure in the vapor space of the evaporator will be 2.0 psia. The overall heat-transfer coefficient for the given conditions is estimated to be 2,000 W/m2 - oC. The density of the feed solution is 1,450 kg/m3 . Neglecting heat losses from the evaporator, determine the: (a) temperature of the solution in the evaporator in oC; (b) heating steam in kg/h; (c) m3 /h of feed; (d) kg/ h of concentrated NaOH solution; (e) rate of evaporation in kg/h.
Expert Solution
Trending now
This is a popular solution!
Step by step
Solved in 10 steps with 9 images
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemical-engineering and related others by exploring similar questions and additional content below.Recommended textbooks for you
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…
Chemical Engineering
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY
Elements of Chemical Reaction Engineering (5th Ed…
Chemical Engineering
ISBN:
9780133887518
Author:
H. Scott Fogler
Publisher:
Prentice Hall
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…
Chemical Engineering
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY
Elements of Chemical Reaction Engineering (5th Ed…
Chemical Engineering
ISBN:
9780133887518
Author:
H. Scott Fogler
Publisher:
Prentice Hall
Industrial Plastics: Theory and Applications
Chemical Engineering
ISBN:
9781285061238
Author:
Lokensgard, Erik
Publisher:
Delmar Cengage Learning
Unit Operations of Chemical Engineering
Chemical Engineering
ISBN:
9780072848236
Author:
Warren McCabe, Julian C. Smith, Peter Harriott
Publisher:
McGraw-Hill Companies, The