Brochure

Preface
In the Department of Structural and Fluid Mechanics
we are happy to present the first English edition of the
book: ’The Centrifugal Pump’. We have written the book
because we want to share our knowledge of pump hy-
draulics, pump design and the basic pump terms which
we use in our daily work.
’The Centrifugal Pump’ is primarily meant as an inter-
nal book and is aimed at technicians who work with
development and construction of pump components.
Furthermore, the book aims at our future colleagues,
students at universities and engineering colleges, who
can use the book as a reference and source of inspira-
tion in their studies. Our intention has been to write
an introductory book that gives an overview of the hy-
draulic components in the pump and at the same time
enables technicians to see how changes in construc-
tion and operation influence the pump performance.
In chapter 1, we introduce the principle of the centrifu-
gal pump as well as its hydraulic components, and we
list the dierent types of pumps produced by Grundfos.
Chapter 2 describes how to read and understand the
pump performance based on the curves for head, pow-
er, eciency and NPSH.
In chapter 3 you can read about how to adjust the
pump’s performance when it is in operation in a system.
The theoretical basis for energy conversion in a centrifu-
gal pump is introduced in chapter 4, and we go through
how anity rules are used for scaling the performance
of pump impellers. In chapter 5, we describe the dier-
ent types of losses which occur in the pump, and how
the losses aect flow, head and power consumption. In
the book’s last chapter, chapter 6, we go trough the test
types which Grundfos continuously carries out on both
assembled pumps and pump components to ensure
that the pump has the desired performance.
The entire department has been involved in the devel-
opment of the book. Through a longer period of time we
have discussed the idea, the contents and the structure
and collected source material. The framework of the
Danish book was made after some intensive working
days at ‘Himmelbjerget’. The result of the department’s
engagement and eort through several years is the book
which you are holding.
We hope that you will find ‘The Centrifugal Pump’ use-
ful, and that you will use it as a book of reference in you
daily work.
Enjoy!
Christian Brix Jacobsen
Department Head, Structural and Fluid Mechanics, R&T
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