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The effects of pressure pulsation attenuation devices on reciprocating compressors can dramatically affect unit performance, especially load, flow, pressure drops and safe operating map. An acoustical (pulsation) study is ordered after the unit has been sized and appropriate unloading hardware selected. Recommendations from the acoustical study typically include pulsation bottle designs, pipe layout designs, orifice plate sizes and locations, and in some cases, changes to unloading sequences. Many acoustical studies are based on detailed analysis of a select set of design operating points reviewed across the compressor’s specified speed range. The reality of compressor operations is that a compressor will operate at many points that are quite different from the selected design points. What really happens at these other operating points? Fortunately, today’s computers can model thousands of compressor operating points, including complete digital pulsation analysis, within hours. Thus, it is now possible to investigate a complete range of expected operating points prior to the unit actually being started. A complete acoustic review can identify areas in the operating map where high pulsations may still exist, to what extent flow and load are affected by the attenuation system, and how the effects of pulsations affect the safety of each load step. When end-users more fully understand how their compressor units will really perform, they are in a better position to optimize unit performance and increase station safety. Furthermore, if significant issues are identified early, then the packager, the pulsation analysis company, and the end-user can review alternative designs (hardware arrangements) or operating schemes.
Your Price $195.00
List Price $195.00