Centrifugal and axial compressor control / Gregory K. McMillan.

Format:

Book

Author/Creator:

McMillan, Gregory K., 1946-

Language:

English

Subjects (All):

Compressors--Automatic control.

Compressors.

Physical Description:

1 online resource (174 p.)

Edition:

1st ed.

Place of Publication:

[New York, N.Y.] (222 East 46th Street, New York, NY 10017) : Momentum Press, 2010.

Language Note:

English

Summary:

The efficiency and onstream time of axial and centrifugal compressors is important for many production units and utility systems. Surge, in particular, can cause system downtime and increase energy use. The flow reversals every few seconds cause severe vibrations that can damage compressor seals and shafts reducing compressor efficiency. And the loss of forward flow often initiates shutdowns of production lines. This book provides a comprehensive view of compressor surge and stall based on first principles and case histories. The process and installation conditions that affect the surge curve and the severity of surge are detailed along with the dynamics of the surge cycle. Solutions are offered to reduce the occurrence and consequences of surge.

Contents:

List of figures

List of tables

Section 1. Introduction to the student

Contents

Audience and prerequisites

Learning objectives

Definition of terms

Section 2. Description of compressors

General types

Centrifugal compressors

Axial compressors

Questions

Section 3. Description of surge

Surge versus stall

Static instability

Dynamic instability

Characteristics of surge

Consequences of surge

Section 4. Effect of operating conditions

Surge curve plotting method

Suction pressure

Suction temperature

Molecular weight

Specific heat ratio

Compression ratio

Speed

Vane position

Section 5. Throughput control

Discharge throttling

Suction throttling

Guide vane positioning

Speed control

Section 6. Surge control

Minimum flow control

Maximum pressure control

Ratio control

Open-loop backup

Manual and process override control

Section 7. Instrument requirements

Controller

Control valves

Speed measurement

Flow measurement

Temperature measurement

Vibration and thrust measurements

Section 8. Disturbances

Throughput control

Surge control

Section 9. Throughput and surge control interaction

Severity

Decoupling

Section 10. Multiple compressor control

Series compressor control

Parallel compressor control

Section 11. Computer monitoring

Frequency analysis

Compressor mapping

Section 12. Startup

Tuning

Commissioning

Appendix A: Answers to questions

Appendix B: ACSL dynamic simulation program for surge

Appendix C: Application example

References.

Notes:

Description based upon print version of record.

Includes bibliographical references (p. 159-160) and index.

Title from PDF t.p. (viewed on June 23, 2010).

ISBN:

9781283895576

1283895579

9781606501740

1606501747

OCLC:

730903249