Category Archives for Cylinder Sizing

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
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Reciprocating Compressors – Cylinder Throughput Capacity

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

23. September 2009 by Jack
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Reciprocating Compressors – Volumetric Efficiency

The flow rate is not directly equal to the piston displacement. Volumetric efficiency is the ratio of actual volumetric flow at inlet temperature and pressure conditions to piston displacement. It is given by: where Ev = stage volumetric efficiency, % … Continue reading

22. September 2009 by Jack
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Reciprocating Compressors – Piston Displacement

The actual volume of the cylinder that is swept by the piston per minute is piston displacement. It can be calculated from: Single acting cylinder (head end displacement) Single acting cylinder (crank end displacement) Double acting cylinder (sum of head … Continue reading

22. September 2009 by Jack
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Reciprocating Compressors – Cylinder Sizing

Typically, in specifying a unit, the suction and discharge pressures, capacity (MMscfd), inlet temperature, and gas properties are given. The actual sizing of the cylinders is left to the manufacturer from his specific combinations of standard cylinders, pistons, and liners. … Continue reading

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