FLUID MECHANICS
LECTURE 10
Fluid Flow: Pumping
JR STOKES, CHEE2003
Pumping of Fluids
Aim: to be able to make elementary engineering estimates of the performance of
fluid machines
White: Ch 11
or
Potter et al Ch 12
Turbomachinery:
Add energy to the fluid:
CHEE3003 Problem Set 3 Solution
Question 1. a)
rG r H T r S
r S r H r G T
r G 298.15 i f Gi 86,550 1.5 228,572 16, 450 1.25 0 239,858 J/mol
i
r S
298.15 226, 400 239,858
298.15 45.13 J/mol.K (+ve, producing moles, OK)
b) Calculating a property, no a
Module 5 tutorial problems.
Note: questions marked with * can be worked through by the tutor at the
start of the tutorial class.
Tutorial and Homework Problems on Flow Regimes and Slip
Velocity
Tutorial and Homework Problems Flow regimes and slip velocity
2014 CHEE2003 Fluids and Particles
TUTORIAL Week 7
Module 3 Flow in Ducts
CHEE2003 Tutorial Problems
Module 3 Flow in Ducts
Tutorial 7 Non-Newtonian fluids and Compressibility / Gas Flow
Pipe flow and Non-Newtonian fluids
1. (a) Write down an equation for
2014 - CHEE2003 Portfolio 4
Content: Module 3 (Gas flow and NNFF) and Module 4 Particle
Characterisations
Weight of Assessment 4 = 5%
Total marks 50 (Part A, 14 marks; Part B, 16 marks; Part C, 20 marks)
Part A - From Tutorials and other relevant question
2014 CHEE2003 Fluids and Particles
TUTORIAL Week 7
Module 3 Flow in Ducts
CHEE2003 Tutorial Problems
Module 3 Flow in Ducts
Tutorial 7 Non-Newtonian fluids and Compressibility / Gas Flow
Pipe flow and Non-Newtonian fluids
1. (a) Write down an equation for
2014 CHEE2003 Fluids and Particles
TUTORIAL Week 4
Module 2 Macroscopic Balance
CHEE2003 Tutorial Problems
Module 2 Macroscopic Balances
Tutorial 4 Mechanical Form of Energy Equation
Mechanical Form of Energy Equation
1. An 89% efficient hydro turbine ope
CHEE3003, 2015
Quiz 1a Solution
Question 1 a) Calculating standard Gibbs free energy. No assumptions necessary.
PbO (s)
rG
750 K
Pb (l) + 1 2O2 (g)
1S
PbO (s)
3S
T = 750 K
4S
2S
Pb (l) + 1 2O2 (g)
T = 300 K
r G 750 K r H 750 K T r S 750 K
r H 750
CHEE3003, 2015
Quiz 1b Solution
Question 1. Assume: 1. Steady state 2. Negligible EK, EP 3. No work 4. Valve is adiabatic 5.
No reactions
Need to use appropriate system boundary:
Q=?
Cooler
System
Boundary
Pure, no reaction and at steady state N out N in
Hydraulic Grade Line and Energy Grade Line
EGL and HGL Slope downward in the
direction of flow due to head loss
HGL
g z
v2
EGL
g 2 g z
For Bernoulli situation
(inviscid flow),
EGL is constant
HGL and EGL will drop in
real situation due to frictiona
CHEE3003, 2015
Quiz 1a
Question 1 (10 marks) Lead oxide is being treated at a high temperature. One of the reactions under consideration is:
PbO (s) Pb (l) + O2 (g) rH(750 K) = 224.2 kJ/mol
Is the reaction spontaneous at 750 K under standard conditions? N
CHEE3003, 2015
Quiz 1c Solution
Question 1. Assume: 1. Steady state 2. Negligible EK, EP 3. No reactions 4. Adiabatic
compressor
Need to use appropriate system boundary:
Ws
T = 300 K
P = 10 bar
Z = 0.95
Q
Compressor and
coolers
T = 350 K
P = 100 bar
Z = 0
CHEE3003, 2015
Quiz 1d Solution
Question 1. Assume 1. Heat and entropy of reaction are constant with T
r G 900 r H 900 T r S 900
Assuming r H 900 r H 300 and r S 900 r S 300
r G 900 r H 300 T r S 300
r H 300 K i f H i 300 K f H CH2O f H CH3OH f H H2
2014 CHEE3003 Mid-Semester Exam Solution
Question 1. Calculating standard Gibbs free energy. No assumptions necessary.
C2 H 6S (g) + H 2 (g)
rG 1300 K
1S
C2 H 6 (g) + H 2S(g) T = 650 K
2S
4S
3S
C2 H 6S (g) + H 2 (g)
5S
C2 H 6 (g) + H 2S(g)
T = 300 K
r
CHEE3003, 2015
Quiz 1c
Question 1. (12 marks)
A process consisting of compression and cooling, is used to compress ethane, C2H6, from 300 K and 10 bar
to 350 K and 100 bar:
T = 300 K
P = 10 bar
Z = 0.95
V = 2.3710-3 m3/mol
T = 350 K
P = 100 bar
Z = 0.7
V
CHEE3003, 2015
Quiz 1b
Question 1. (12 marks)
Q=?
T = 500 K
P = 10 MPa
V = 3.510-4 m3/mol
HX
T = 400 K
P = 5 MPa
V = 5.310-4 m3/mol
For a stream on a process plant, it is proposed to reduce the pressure and cool this stream by using a valve and
then a coo
CHEE3003, 2015
Quiz 1d
Question 1. (10 marks) Formaldehyde can be produced by partial oxidation of methanol over a metal oxide
catalyst. A side reaction that also occurs is:
CH3OH (g) CH2O (g) + H2 (g)
Using only the following data, calculate if reaction
Semester One Mid-semester Examinations, 2015
CHEE3003 Chemical Thermodynamics
Venue
Seat Number
_
Student Number
|_|_|_|_|_|_|_|_|
Family Name
This exam paper must not be removed from the venue
_
_
First Name
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School of Chemical Engineering
EXAMINATION
S
2014 CHEE2003 Fluids and Particles
TUTORIAL Week 6
Module 3 Flow in Ducts
CHEE2003 Tutorial Problems
Module 3 Flow in Ducts
Solutions
Tutorial 6 Pumping
VISCOUS PIPE FLOW and Pumping
1. The present pumping rate of North Slope crude oil through the Alaska
Module 5: Particle-Fluid Interaction
Fluid/Particle
Interactions:
Flow Regimes Overview
Fluid/Particle
Interactions:
We are interested in the flow of fluid (liquid or
gas) past particles
What are the applications?
What flow regimes are there?
How do we ch
Portfolio 1 - Feedback from markers
Common Mistakes:
Using diameter not radius
Incorrect significant figures
Diagrams and assumptions for all problem solving questions!
Part A:
This part was marked very easily. If it looked like you knew what you were doi
2014 Portfolio 2 due Wed 27 Aug 13 12:30
2014 - CHEE2003 Fluids and Particles,
Portfolio Assessment 2
Module 2 Macroscopic Balances
Weight: 5%
Total marks 50 (part A, 12 marks; part B, 20 marks; part C, 18 marks)
Part A marking
Most students should get fu
2014 Portfolio 3 due Wed 10 Sep 14 12:30
2014 - CHEE2003 Fluids and Particles, Portfolio Assessment 2
Module 3 Internal Flows (excluding NNF and gases)
Weight: 5%
Total marks 100 (part A, 12 marks; part B, 20 marks; part C, 18 marks + bonus marks)
due Wed
2014 Portfolio 3 due Wed 10 Sep 14 12:30
2013 - CHEE2003 Fluids and Particles, Portfolio Assessment 2
Module 3 Internal Flows (excluding NNF and gases)
Weight: 5%
Total marks 100 (part A, 12 marks; part B, 20 marks; part C, 18 marks + bonus marks)
due Wed
2014 Portfolio 2 due Wed 27 Aug 13 12:30
2014 - CHEE2003 Fluids and Particles,
Portfolio Assessment 2
Module 2 Macroscopic Balances
Weight: 5%
Total marks 50 (part A, 12 marks; part B, 20 marks; part C, 18 marks)
Part A - Portfolio of Tutorial Questions (