A solution of sugar in water is to be concentrated from 5 wt % sugar to 20 % sugar. The solution is at about 45°C when it is fed continuously to a bubble column. Air at 45°C with a dew point of 4°C is bubbled through the column and emerges saturated. The humidification of the air may be considered adiabatic. Use the psychrometric chart to solve the following problems: Air, saturated with water 5 wt% Sugar solution Bubble column 20 wt% Sugar solution Air T = 45°C T dew point = 4°C а. What are the absolute humidities of the entering and exiting air? b. How many kilograms of dry air must be fed per kilogram of the entering sugar solution? What is the corresponding volume of the entering wet air?
A solution of sugar in water is to be concentrated from 5 wt % sugar to 20 % sugar. The solution is at about 45°C when it is fed continuously to a bubble column. Air at 45°C with a dew point of 4°C is bubbled through the column and emerges saturated. The humidification of the air may be considered adiabatic. Use the psychrometric chart to solve the following problems: Air, saturated with water 5 wt% Sugar solution Bubble column 20 wt% Sugar solution Air T = 45°C T dew point = 4°C а. What are the absolute humidities of the entering and exiting air? b. How many kilograms of dry air must be fed per kilogram of the entering sugar solution? What is the corresponding volume of the entering wet air?
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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![A solution of sugar in water is to be concentrated from 5 wt % sugar to 20 % sugar. The solution
is at about 45°C when it is fed continuously to a bubble column. Air at 45°C with a dew point of 4°C is
bubbled through the column and emerges saturated. The humidification of the air may be considered
adiabatic. Use the psychrometric chart to solve the following problems:
Air, saturated with water
5 wt% Sugar solution
Bubble
column
20 wt% Sugar solution
Air
T = 45°C
I dew point = 4°C
а.
What are the absolute humidities of the entering and exiting air?
b. How many kilograms of dry air must be fed per kilogram of the entering sugar solution? What is
the corresponding volume of the entering wet air?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F200f277e-3742-44cf-9429-5b8f9825a112%2F6a38b11e-4dec-4165-996e-db5d2d0f6a91%2Fq6oms4b_processed.png&w=3840&q=75)
Transcribed Image Text:A solution of sugar in water is to be concentrated from 5 wt % sugar to 20 % sugar. The solution
is at about 45°C when it is fed continuously to a bubble column. Air at 45°C with a dew point of 4°C is
bubbled through the column and emerges saturated. The humidification of the air may be considered
adiabatic. Use the psychrometric chart to solve the following problems:
Air, saturated with water
5 wt% Sugar solution
Bubble
column
20 wt% Sugar solution
Air
T = 45°C
I dew point = 4°C
а.
What are the absolute humidities of the entering and exiting air?
b. How many kilograms of dry air must be fed per kilogram of the entering sugar solution? What is
the corresponding volume of the entering wet air?
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