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  1. PSucher

    Screw compressor for CO2

    There are MANY diferent brands of process oil flooded screw compressors: Howden, Mycom, Aerzen, GHH, Kobelco, Tamrotor to name a few. Only a couple have a "compound" machine (Mycom & Kobelco). Kobelco & Mycom offer factory direct packaging of their unit (noting that packaing costs...
  2. PSucher

    liquid carry over to compressor

    Be careful when turning a centrifugal comrpessor into a pump. We all know they are not designed for such service. The liquid is a larger mas flow and as such you could greating affect your power draw. Erosion will always occur as the liquid partical in a centrifugal compressor will never...
  3. PSucher

    Air Cooled vs. Water Cooled condenser tonnage...are they equal???

    Depending on where the "Design" loading of your compressors are, you may be able to switch. You probably know that the evap coolers lower the condensing temperature of the refrigerant. If you use straight air-cooled HX (no evap), then you lessen the "tonnage" (you have...
  4. PSucher

    Compressor type for CO2

    As stated before, economics is a play. My company can do this with a recip and that is typically used for this application (looks like acid gas injection). A centrifugal is not practical with the number of stages. IF you want to break it up into two machines, we may put a screw compressor on...
  5. PSucher

    Recip Compressors

    Mark, Yes, positive displacement compressor will give you the same volume (displacment), and I think that you can apply the N2 machine to CO2 service for the compression application keeping in mind the following: 1) Temperature: N2 has a k-value (Cp/Cv) of 1.4, while CO2 is closer to 1.3...

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