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Centrifugal Pumps (Hardcover)
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Centrifugal Pumps (Hardcover)
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Originally puublished in 1915. PREFACE: The extensive use and
increasing popularity of centrifugal pumping machinery make it
necessary for many to become familiar with this subject in all its
phases. In this book an effort has been made to cover the following
ground To illustrate and explain all the essential features of
construction of modern centrifugal pumps, to present a clear and
intelligible theory which shall be entirely general in its nature,
to explain by this theory the pump characteristics and connect the
theory with the actual facts, to present a thorough discussion of
the factors affecting efficiency, to considerthe characteristics of
varioustypes ofpumps and their suitability for different services,
to compare centrifu- gal with displacement pumps, and to present
various general laws and factors leading to a better appreciation
of the field of service of such pumps and a better means of
selecting the proper combinations. While this is not primarily a
book on design, it is believed that a thorough study of the
foregoing will be of value to prospective designers, and in
addition the methods of design of centrifugal pumps are outlined.
The material in this book is based upon a study of the performances
of 123 turbine and 51 volute centrifugal pumps made by 17 and 12
different companies respectively. The field covered by them ranged
from 1 to 11 stages, heads from 7 to 1843 ft., capacities from 108
to 132,000 gal. per minute, speeds from 62 to 20,000 r.p.m., and
efficiencies from 30 to 87 per cent. A considerable portion of the
work is also founded upon the anal- ysis of tests made by the
author upon a volute pump and a turbine pump for both of which all
information regardingdimensions and other quantities was
obtainable. With the turbine pump an extensive and accurate series
of tests was made at various speeds from 700 to 2,000 r.p.m. Both
of these pumps were regular commercial pumps of good design, not
freak pumps built for experimental purposes only. The author has
drawn upon trade catalogues and several books and papers for much
of his material, due credit for which is given in the text, but it
is believed that a very great deal of the following treatise will
be found to be new. The common usage regarding terms employed has
been followed as far as possible, but in cases where there were no
precedents or where the usage was illogical and confusing, new
terms have been created. It is hoped that eventually some of these
things may become standardized. The book has been so written as to
serve the needs of the practising engineer who wishes to obtain a
grasp of this subject. By the insertion of problems and questions
it is believed that it will be found equally well adapted for use
as a text. Contents include: PREFACE v CHAPTER I INTRODUCTION 1
Definition Classification Reaction turbine vs. turbine pump
Historical development Conditions of use Pump size Rated head and
discharge...
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