Follow the standard energy balance steps to determine the water condensed and the heat removed from a humid air stream. The feed stream contains 12 wt% water (balance is air), has a temperature of 250°C and a pressure of 1 atm. The exit gas stream is at 1 atm and 25°C. The exit vapor composition should be determined from the psychrometric chart (saturated). The heat of vaporization of water at 25°C is 44.0 kJ/mol. a. Draw a picture and label appropriately (Basis: 1 kg/s feed). b. Perform a degree of freedom analysis. c. Write appropriate equations. d. Complete all material balances. e. Specify reference states.

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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f. Construct and fill out enthalpy table. Define variables for unknown enthalpies.
ĤIn (kJ/mol)
Species/Phase
H₂O (v)
Air (g)
H₂O (1)
min (kg/s)
g. Determine unknown enthalpies.
h. Determine Q. Please give your answer in kW.
mout (kg/s)
Ĥ Out (kJ/mol)
Transcribed Image Text:f. Construct and fill out enthalpy table. Define variables for unknown enthalpies. ĤIn (kJ/mol) Species/Phase H₂O (v) Air (g) H₂O (1) min (kg/s) g. Determine unknown enthalpies. h. Determine Q. Please give your answer in kW. mout (kg/s) Ĥ Out (kJ/mol)
Follow the standard energy balance steps to determine the water condensed and the heat removed
from a humid air stream. The feed stream contains 12 wt% water (balance is air), has a
temperature of 250°C and a pressure of 1 atm. The exit gas stream is at 1 atm and 25°C. The
exit vapor composition should be determined from the psychrometric chart (saturated). The heat
of vaporization of water at 25°C is 44.0 kJ/mol.
Draw a picture and label appropriately (Basis: 1 kg/s feed).
a.
b. Perform a degree of freedom analysis.
c. Write appropriate equations.
d. Complete all material balances.
e. Specify reference states.
Transcribed Image Text:Follow the standard energy balance steps to determine the water condensed and the heat removed from a humid air stream. The feed stream contains 12 wt% water (balance is air), has a temperature of 250°C and a pressure of 1 atm. The exit gas stream is at 1 atm and 25°C. The exit vapor composition should be determined from the psychrometric chart (saturated). The heat of vaporization of water at 25°C is 44.0 kJ/mol. Draw a picture and label appropriately (Basis: 1 kg/s feed). a. b. Perform a degree of freedom analysis. c. Write appropriate equations. d. Complete all material balances. e. Specify reference states.
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