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Recent content by chendian

  1. chendian

    Compressed Air System - To identify dew point and suitable dryer

    To zeusfaber, Thanks for the feedback. Yes it should be lower than the ambient temp, but i unable to justify the most lowest limit i can go for as i need to consider the compression of 50 bar of the air, right? To georgeverghese, Thanks for the feedback. Noted but how can i get the...
  2. chendian

    Compressed Air System - To identify dew point and suitable dryer

    Hi, I'm working to identify and design of medium pressure compressed air system. I need to define the air quality requirement for the air compressor especially for the dew-point value and suitable dryer to be considered. I don't have any consumer requirement for air quality dew-point, thus i...
  3. chendian

    PD pump performance

    [thumbsup2] Tq
  4. chendian

    PD pump performance

    Thank you for the feedback. FYI, the medium transfer is fuel with viscosity about 20cSt at 20degC. With PD pump gear type, why this pump couldn't work if the NPSHa<NPSHr? Is it because of the cavitation will be occurred at the inlet pump? Or pressure loss in the pipeline resist the pump to...
  5. chendian

    PD pump performance

    Hye, I would like to seek any expert view. If i want to buy the positive displacement pump, do I need to provide the NPSHa value? And what is the impact to this pump performance if the NPSHr value is higher than NPSHa? Thank you.
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