Piston Type Compressors

A. Compressor Cylinder

1. Piston

2. Rod

3. Cylinder

4. Valves

5. Packing

6. Miscellaneous

a. Clearance Pocket

b. Valve Unloaders

7. Lubrication System

8. Cooling System

B. Crosshead and Connecting Rod

C. Compressor Frame

D. Integral Compressor Units

A. Flow Description

B. Theory of Positive Displacement Compression

C. Effect of Change in Gas Volume on Pressure

D. Effect of Temperature on Gas Pressure

E. Actual Gas Volume

F. Compressor Cylinder Displacement

G. Volumetric Efficiency and Clearance

H. Compression Ratio

I. Pulsation

J. Rod Load

A. Speed Control

B. Control with Clearance Pockets

C. Control with Valve Unloaders

D. Recycle Control

E. Other Factors Affecting Control

A. Start-Up

1. Purging

B. Shutdown Procedure

C. Routine Operating Checks

A. Performance Analyzer

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