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Recent content by ham5999

  1. ham5999

    Should compressor Np be adjusted for RPMs to compare to design?

    Hi folks, just wondering if perhaps I need to move this to a different forum (i.e. gas compression engineering)? Or perhaps my question needs rephrased or more info supplied? I have several surveys of this compressor at different RPMs and I'm just trying to understand if I can compare the...
  2. ham5999

    Should compressor Np be adjusted for RPMs to compare to design?

    I have calculated a polytropic efficiency for a centrifugal compressor at the set of conditions when the survey was conducted. I also have the design curve showing the predicted efficiency vs icfm. Latest survey: RPM = 8610 icfm = 14600 Np = 75.6 From Design Curve: RPM = 8800 icfm = 14600...
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