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This book provides a practical introduction to dynamic and positive displacement compressors, including compressor performance, operation, and problem awareness. In reading this book readers will learn what is needed to select, operate, and troubleshoot compressors. Complete with real-life case histories, the book demonstrates investigative techniques for identifying and isolating various contributing causes, including design deficiencies, manufacturing defects, adverse environmental conditions, operating errors, and intentional or unintentional changes of the machinery process that usually precede failure.
Contents
Preface
Acknowledgements
Introduction
History
General Compressor Theory
Thermodynamics of Compression
Compressor Types
Dynamic Compressors
Axial Compressors
Centrifugal Compressors
Variations in Compressor Design
Positive Displacement Compressors
Blowers
Reciprocating Compressors
Preliminary Selection and Sizing
Screw Compressors
Screw Compressor Control
Effect of Operating Conditions
Effects of Temperature & Pressure
Effects of Compression Ratio
Effects of Specific Heat Ratio
Throughput Control
Speed Control
Suction Throttling Control
Discharge Valve Throttling Control
Recycle Valve Control
Variable Volume Pocket Control
Description of Surge
Surge & Stall
Surge Control
Minimum Flow Control
Maximum Pressure Control
Ratio Control
Vibration
Rotor Response
Sources of Vibration
Valve Requirements
alve Types
alve Trim
Instrument Requirements
Sensor Types
Speed of Response
Detectable Problems
Mechanical Problems
Electrical Problems
Performance Problems
Controlling Reciprocatng and Centrifugal Compressors in Identical Processes
Optimization & Revitalization of Existing Reciprocating Compression Assets
Piston Rod Run-out is a Key Criterion for Recip Compressors
Effect of Pulsation Bottle
Design on the Performance of a Modern
Low-speed Gas Transmission Compressor Piston
Resolution of a Compressor Valve Failure:
A Case Study
Appendix
A1 Compressor Manufacturers
A2 Comparison of Three Types of Compressors
B1 List of Symbols
B2 Glossary of Terms
B3 Conversion Factors
C Gas Processers Suppliers Association Select Curves & Charts
D Classification of Hazardous Atmospheres
E Air/Oil Cooler Specifications Check List
F Cylinder Displacement Curves
G Compressor Cylinder Lubrication
H Troubleshooting Chart
Typical Starting, Operating and Maintenance
Procedures for a Reciprocating Compressor
J Basic Motor Formulas and Calculations
Index