The refrigeration professional who selects and operates compressors should have a clear understanding of how…
Performance Analysis of Reciprocating Compressors and Engines
Performance analysis is employed in several Company locations as one of several available methods of predictive maintenance. Performance analysis is a program involving several elements, which can include:
• Analysis of power-cylinder pressure versus time,
• Analysis of compressor-cylinder pressure versus time, or volume,
• Analysis of vibration caused by mechanical events,
• Analysis of computed values, such as horsepower, and/or
• Analysis of power-cylinder ignition.
The concept of predictive maintenance is being successfully used throughout the industry to reduce maintenance expense. The essential philosophy behind a predictive maintenance program is a concentrated effort to gather pertinent data on a periodic basis. Data acquisition is covered later on in this section.
The advantages of a predictive maintenance program include:
• Elimination of catastrophic damage, thereby avoiding very high expense.
• Avoiding equipment (and plant) downtime.
• Performing only necessary maintenance.
• Avoiding disassembly of healthy machinery (periodic “overhauls,” for example) and exposing it to risks of maintenance errors.
• Allowing reliable machinery to continue operation.
• Optimizing fuel consumption.
The following is information summarized from two programs: one at a producing facility, the other at a large refinery.
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