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Recent content by Nansen

  1. Nansen

    PSV sizing blocked compressor outlet (Max flow through centrifugal compressor)

    Thank you all for your good suggestions, apprecitate it! As I do not have the diff head curves I will put in the discharge pressure curves in hysys and have it generate new curves for the higher suction pressure. If the results looks reasonable compared to the existing curves this should be an...
  2. Nansen

    PSV sizing blocked compressor outlet (Max flow through centrifugal compressor)

    Thank you for your replies! @TD2K: Unfortunately I do not have the differential head curve but I do have pressure ratio curve which I think will correspond to the head curve. If I understand you correctly you are indirectly saying that the pressure ratio curve is also valid for the increased...
  3. Nansen

    PSV sizing blocked compressor outlet (Max flow through centrifugal compressor)

    Hi everyone! I am validating a PSV downstream a 1st stage recompressor for blocked outlet. The compressor is normally operating with a suction pressire of 1.5 barg and MW = 43. I have the performance curves for this case and they are showing a maximum flow of 6000 Am³/h which corresponds to 20...
  4. Nansen

    Heat transfer from pipe/equipment steel wall to gas inside pipe/equipment

    Hi Morten, thank you for your reply! The spreadsheet is within the depressuring utility in Hysys. It is dynamic and the calculations are to be used for a shut down process section that is depressuring while a fire is engulfing the section. In the utility there are several inputs and factors...
  5. Nansen

    Heat transfer from pipe/equipment steel wall to gas inside pipe/equipment

    Hi all! I wish to calculate the heat transfer from a pipe/equipment wall heated by fire, into the gas inside the pipe/equipment. The heat input to -and temperature rise of the wall is calculated with standard radiation and convection equations. Compared to liquid filled sections the heat input...

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