Hassan M. Badr - Pumping Machinery Theory and Practice

1. Chapter 02
2. Chapter 05
3. Chapter 09

1. Chapter 01
2. Chapter 02
3. Chapter 03
4. Chapter 04
5. Chapter 05
6. Chapter 06
7. Chapter 07
8. Chapter 08
9. Chapter 09
10. Chapter 10

This edition first published 2015
2015, John Wiley & Sons, Ltd

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Library of Congress Cataloging-in-Publication Data

Badr, Hassan M.
Pumping machinery theory and practice / Hassan M. Badr, Wael H. Ahmed.
pagescm
Includes bibliographical references and index.

ISBN 978-1-118-93208-7 (hardback)
1.Pumping machinery.I.Ahmed, Wael H.II.Title.
TJ900.B193 2015
621.6dc23

2014031896

A catalogue record for this book is available from the British Library.

To my parents, my dear wife and my children

Energy consumption in pumping systems accounts for approximately 20% of the worlds electrical energy demand. Moreover, the operational cost of pumping machinery far outweighs their capital cost. Accordingly, engineers strive for optimum equipment performance for achieving economic operation. A thorough understanding of the components and principles of operation of these machines will provide an opportunity to dramatically reduce energy, operational and maintenance costs. Reducing energy consumption will also complement the current thrust towards protecting our environment.

This book is intended to be a basic reference on theoretical foundation and applications of various types of pumping machinery. In view of the great importance of pumps and compressors in almost every engineering system, this book presents the fundamental concepts underlying the flow processes taking place in these machines and the transformation of mechanical energy into fluid power. Special emphasis is given to basic theoretical formulation and design considerations of pumps and compressors in addition to improving problem-solving skills. This is achieved through the presentation of solved examples of applied nature using analytical means and/or basic engineering practices.

The book consists of ten chapters covering two main themes: the first smoothly introduces the essential terminology, basic principles, design considerations, and operational-type problems in pumping machinery. This part is supported by a good number of worked examples plus problems at the end of each chapter for the benefit of senior undergraduate students and junior engineers. This is considered a key feature of this book because other books in this area rarely provide enough worked problems and exercises. The second theme focuses on advanced topic such as two-phase flow pumping systems targeting practicing field engineers and introductory research scientists.

The authors wish to acknowledge their students encouragement to write this book. The idea was initiated by the first author after searching for a good textbook for an undergraduate course in pumping machinery that he has been teaching for over 20 years. The absence of a suitable textbook demanded the preparation of a set of course notes to help the students to a better understanding of the subject. The support received from King Fahd University of Petroleum & Minerals under Grant # IN111025 for the preparation of this textbook is greatly appreciated.

A	area
b	vane width
BP	brake power
C	speed of sound
Cc	contraction coefficient
CH	head coefficient
CP	power coefficient
CQ	flow coefficient
D	impeller diameter
f	friction coefficient
g	gravitational acceleration
h	enthalpy
hss	static suction head
hsd	static delivery head
hs	suction head
hd	delivery head
H	pump total head
	angular momentum
I	rotational enthalpy
k	specific heat ratio
K	loss coefficient for pipe fittings
L	length of connecting rod
	mass flow rate
M	Mach number
	moment
ns	specific speed in SI
Ns	specific speed in the American system
NPSH	net positive suction head
N	speed of rotation in rpm
p	pressure
po	stagnation pressure
pv	vapor pressure
P	power
Q	volume flow rate
r	crank radius
R	gas constant
S	suction specific speed