1. Benzene forms a falling film as it is collected from a slow well down a vertical rectangular wall with a width of 3m. a. Estimate viscosity of benzene. The wall is at 50°C and is open to the atmosphere (P-101,325 Pa). Use the following properties of benzene and physical constants. You can estimate V, specific volume, as equal to M/p. Value Units Property Avogadro's Number, N Planck's constant, h #/gmol m2 kg/s 6.022x103 6.62x1034 °C Boiling point, Tb Molecular weight, M Density, p 80.1 g/gmol kg/m 78.11 847 Kels b. The film is flowing at 0.004 Assuming laminar flow, what is the thickness of the film in millimeters? C. The above calculation assumes non-rippling laminar flow (Re <20). What is the Reynold's number at these conditions? Is laminar flow a good assumption? [Note: For a falling film, Re3(4 (w/W)/u)]
1. Benzene forms a falling film as it is collected from a slow well down a vertical rectangular wall with a width of 3m. a. Estimate viscosity of benzene. The wall is at 50°C and is open to the atmosphere (P-101,325 Pa). Use the following properties of benzene and physical constants. You can estimate V, specific volume, as equal to M/p. Value Units Property Avogadro's Number, N Planck's constant, h #/gmol m2 kg/s 6.022x103 6.62x1034 °C Boiling point, Tb Molecular weight, M Density, p 80.1 g/gmol kg/m 78.11 847 Kels b. The film is flowing at 0.004 Assuming laminar flow, what is the thickness of the film in millimeters? C. The above calculation assumes non-rippling laminar flow (Re <20). What is the Reynold's number at these conditions? Is laminar flow a good assumption? [Note: For a falling film, Re3(4 (w/W)/u)]
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
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![1. Benzene forms a falling film as it is collected from a slow well down a vertical rectangular wall
with a width of 3m.
a. Estimate viscosity of benzene. The wall is at 50°C and is open to the atmosphere
(P-101,325 Pa). Use the following properties of benzene and physical constants. You
can estimate V, specific volume, as equal to M/p.
Value
Units
Property
Avogadro's Number, N
Planck's constant, h
#/gmol
m2 kg/s
°C
6.022x1023
6.62x10 34
Boiling point, Tb
Molecular weight, M
Density, p
80.1
g/gmol
kg/m
78.11
847
Ko/s
b. The film is flowing at 0.004 s Assuming laminar flow, what is the thickness of the film
in millimeters?
c. The above calculation assumes non-rippling laminar flow (Re <20). What is the
Reynold's number at these conditions? Is laminar flow a good assumption? [Note: For a
falling film, Re-(4 (w/W)/u)]](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F47fcf177-91d9-4021-827e-e98af45126c8%2Ff0055601-0ed7-4b51-87bf-511ab6997046%2Fd9r5r39_processed.jpeg&w=3840&q=75)
Transcribed Image Text:1. Benzene forms a falling film as it is collected from a slow well down a vertical rectangular wall
with a width of 3m.
a. Estimate viscosity of benzene. The wall is at 50°C and is open to the atmosphere
(P-101,325 Pa). Use the following properties of benzene and physical constants. You
can estimate V, specific volume, as equal to M/p.
Value
Units
Property
Avogadro's Number, N
Planck's constant, h
#/gmol
m2 kg/s
°C
6.022x1023
6.62x10 34
Boiling point, Tb
Molecular weight, M
Density, p
80.1
g/gmol
kg/m
78.11
847
Ko/s
b. The film is flowing at 0.004 s Assuming laminar flow, what is the thickness of the film
in millimeters?
c. The above calculation assumes non-rippling laminar flow (Re <20). What is the
Reynold's number at these conditions? Is laminar flow a good assumption? [Note: For a
falling film, Re-(4 (w/W)/u)]
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