Rerate Overview; Aerodynamic, Mechanical, Efficiency Considerations, Trends

Source: AIChE
  • Type:
    Conference Presentation
  • Conference Type:
    AIChE Spring Meeting and Global Congress on Process Safety
  • Presentation Date:
    April 27, 2015
  • Duration:
    30 minutes
  • Skill Level:
    Intermediate
  • PDHs:
    0.50

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This paper will take into consideration aerodynamic design, mechanical limitations, machine life assessment, and physical space limitations both inside the casing of the machine and on the compressor deck when a plant operator is considering new operating conditions for compressors and/or steam turbines.  It will help the operator determine whether it is more beneficial to rerate an existing machine, or replace it with a new drop-in machine. 

Additionally, the difference in the time it takes to install a rerate and the time it takes to install a new drop-in machine will be evaluated with an eye toward minimizing the duration of a plant turnaround.  The role of machine auxiliaries such as oil systems, buffer gas systems, injection systems, and control systems will also be explained.

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