Pump Characteristics and Applications

Book Description

This hands-on reference offers a practical introduction to pumps and provides the tools necessary to select, size, operate, and maintain pumps properly. It highlights the interrelatedness of pump engineering from system and piping design to installation and startup. This updated second edition expands on many subjects introduced in the first edition and also provides new in-depth discussion of pump couplings, o-rings, motors, variable frequency drives, pump life-cycle cost, corrosion, and pump minimum flow. It discusses pump selection and system design, explains the latest developments in pump technology, examines computer software for system design and pump selection, and more.

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Know and Understand Centrifugal Pumps

Prologue

Very few industrial pumps come out of service and go into the maintenance shop because the volute casing or impeller split down the middle, or because the shaft fractured into four pieces. The majority of pumps go into the shop because the bearings or the mechanical seal failed. Most mechanics spend their time at work time greasing and changing bearings, changing pump packing, and mechanical seals. The mechanical engineers spend their time comparing the various claims of the pump manufacturers, trying desperately to relate the theory learned at the University with the reality of the industrial plant. Purchasing agents have to make costly decisions with inadequate information at their disposal. Process engineers and operators are charged with maintaining and increasing production. The focus of industrial plant maintenance has always been that the design is correct, and that the operation of the pumps in the system is as it should be. In this book, you will see that in the majority of occasions, this is not
true. Most of us in maintenance spend our valuable time, just changing parts, and in the best of cases, performing preventive maintenance, trying to diminish the time required to change those parts.
We almost never stop to consider what is causing the continual failure of this equipment. This book will help you to step away from the fireman approach, of putting out fires and chasing emergencies. This book is directed toward the understanding of industrial pumps and their systems. It won’t be a guide on how to correctly design pumps, nor how to rebuild and repair pumps. There are existing books and courses directed toward those themes. By understanding the real reasons for pump failure, analyzing those failures, and diagnosing pump behavior through interpretation of pressure gauges, you can achieve productive pump operation and contain maintenance costs. This book will serve as a guide to STOP repairing industrial pumps.

Bachus Company, Inc. | ISBN 1856174093 | English | PDF | Pages: 270 | 5.11 MB | RAR Compressed | No Password

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The CAD Guidebook: A Basic Manual for Understanding and Improving Computer-Aided Design

Explains how to alternate among, and become comfortable with, a wide range of CAD systems and construct appropriate design processes
Discusses how to predict hardware and software interactions and monitor CAD environments
Includes coverage of creating and analyzing 3-D CAD assemblies, surfaces, and components
Covers how to plan efficient approaches for part modeling, effectively utilize and allocate available resources, and translate models to alternate system formats

Covering how to implement, execute, adjust, and administer CAD systems, The CAD Guidebook presents fundamental principles and theories in the function, application, management, and design of 2- and 3-D CAD systems. It illustrates troubleshooting procedures and control techniques for enhanced system operation and development and includes an extensive glossary of key terms and concepts, and end-of-chapter review questions. The book is an essential reference for mechanical, manufacturing, industrial, software, computer, design, quality, and reliability engineers, and an excellent text for undergraduate and graduate students in these disciplines.

Table of Contents

Introduction
Computer Hardware Basics
Computer Software Basics
Drawings and 2-D Design
Two-Dimensional CAD
Managing Two-Dimensional CAD
Three-Dimensional CAD
Part Modeling
Surface Modeling
Assembly Modeling
Managing Three-Dimensional CAD. Glossary
Bibliography
Index

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Principles of Welding: Processes, Physics, Chemistry, and Metallurgy

Spite the critically important role welding plays in nearly every type of human endeavor, most books on this process either focus on basic technical issues and leave the science out, or vice versa. In Principles of Welding, industry expert and prolific technical speaker Robert W. Messler, Jr. takes an integrated approach--presenting a comprehensive, self-contained treatment of the welding process along with the underlying physics, chemistry, and metallurgy of weld formation.

Promising to become the standard text and reference in the field, this book provides an unprecedented broad coverage of the underlying physics and the mechanics of solidification--including peritectic and eutectic reactions--and emphasizes material continuity and bonding as a way to create a joint between materials of the same general class. The author supplements the book with hundreds of tables and illustrations, and correlates the science to welding practices in the real world.

Principles of Welding departs from existing books with its clear, unambiguous presentation, which is easily grasped even by undergraduate students, yet given at the advanced level required by experienced engineers.

Table of Contents

THE PROCESS AND PROCESSES OF WELDING.
Introduction to the Process of Welding.
Classifying Welding Processes.
Fusion Welding Processes.
Nonfusion Welding Processes.
THE PHYSICS OF WELDING.
Energy for Welding.
The Flow of Heat in Welds.
Thermally Induced Distortion and Residual Stresses During Welding.
The Physics of Welding Energy or Power Sources.
Molten Metal Transfer in Consumable Electrode Arc Welding.
Weld Pool Convection, Oscillation, and Evaporation.
THE CHEMISTRY OF WELDING.
Molten Metal and Weld Pool Reactions.
Weld Chemical Heterogeneity.
THE METALLURGY OF WELDING.
Weld Fusion Zone Solidification.
Eutectic, Peritectic, and Postsolidification Fusion Zone Transformations.
The Partially Melted Zone.
The Weld Heat-Affected Zone.
Weldability and Weld Testing

 

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Welded Joint Design

Written by a welding design specialist with 35 years of experience, Welded Joint Design provides a clear and concise explanation of how welded joints and structures are designed and the constraints welding may impose on the design. Thoroughly illustrated, this new edition includes descriptions of the mechanical properties of steel and other structural materials. It will be tremendously valuable to both students and practicing engineers in welding and design, as well as to civil, structural, mechanical and plant engineers who need to learn more about the design of welded products. UNIQUE FEATURES * Explores methods of stress calculation. * Briefly reviews various structural design philosophies and their influence on the choice of welding processes and procedures. * Includes the particular features of arc-welded joints and their effect on fatigue and fracture behavior. * Explains practical constraints on joint design and configuration in context of joint preparation and access.

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