Category Archives for Reciprocating Compressors

Reciprocating Compressors – Fugitive Emissions Control

One of the growing environmental concerns for both new and existing reciprocating compressor installations is fugitive emissions. Fugitive emissions are the leakage of volatile organic compounds (VOCs) into the atmosphere. The local environmental regulations should be checked at the beginning … Continue reading

23. September 2009 by Jack
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Reciprocating Compressors – Industry Standard Specifications

Reciprocating compressors are generally classified as either low-speed (integral) compressors or high-speed (separable) compressors. API has provided a standard and specification for each type of compressor to help the user and the facility engineer provide reliable compressor installations. API Standard … Continue reading

23. September 2009 by Jack
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Reciprocating Compressors – Foundation Design

Satisafactory compressor installations many times depend on how well the foundation or support structure was designed. An inadequate foundation design can result in equipment damage due to excessive vibration. The money saved by cutting corners on foundation design effort may … Continue reading

23. September 2009 by Jack
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Reciprocating Compressors – Pipe Sizing

Because of the reciprocating action of the piston, care must be exercised to size the piping to minimize acoustical pulsations and mechanical vibrations. As a rule of thumb, suction and discharge lines should be sized for a maximum actual velocity … Continue reading

23. September 2009 by Jack
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Reciprocating Compressors – Cylinder/Packing Lubrication System

The flow required to lubricate the packing and cylinders is quite small, and the pressure necessary to inject the lubricant at these locations is quite high. Therefore, small plunger pump (force-feed lubricators) systerns are used. The force-feed lubricators are usually … Continue reading

23. September 2009 by Jack
Categories: Cooling and Lubricating System | Tags: | Leave a comment

Reciprocating Compressors – Frame Lubrication System

The frame lubrication system circulates oil to the frame bearings, connecting rod bearings, crosshead shoes, and can also supply oil to the packing and cylinder lubrication system. Splash lubrication systems are the least expensive and are used in small air … Continue reading

23. September 2009 by Jack
Categories: Cooling and Lubricating System | Tags: | Leave a comment

Reciprocating Compressors – Cylinder Cooling

Traditional compressor cylinder designs require cooling water jackets to promote uniform distribution of heat created by gas compression and friction. Some of the perceived advantages of water-cooled cylinders are reduced suction gas preheat, better cylinder lubrication, prolonged parts life, and … Continue reading

23. September 2009 by Jack
Categories: Cooling and Lubricating System | Tags: | Leave a comment

Reciprocating Compressors – Rod Load

The allowable rod load depends on rod diameter and material, and will be quoted by the manufacturer. The actual load can be calculated from the following equations if the geometry is known: The calculations shown above provide the gas load … Continue reading

23. September 2009 by Jack
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Reciprocating Compressors – Compressor Flexibility

To enhance compressor flexibility it is desirable to design into the compressor the capability of operating at other than the original design conditions. If it is desired to provide flexibility to operate at lower suction pressures: * Add the ability … Continue reading

23. September 2009 by Jack
Categories: Cylinder Sizing | Tags: | Leave a comment

Reciprocating Compressors – Cylinder Throughput Capacity

Using a known piston displacement and efficiency, the gas throughput can be calculated from:

23. September 2009 by Jack
Categories: Cylinder Sizing | Tags: | Leave a comment

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