Dear All,
Could you help me with one concern regarding positive displacement pump flowrate/ curve as follows:
- Pump type: Positive displacement
- Existing: Pump is designed at 30m3/hr and 800 kPa diff pressure.
- Revamping: System friction loss at 30m/hr is 950kPaG. From new pump curve (at new viscosity), pump diff pressure at 30 m3/hr is 1050kpa.
Question: With new viscosity, pump transfer rate is still 30 m3/hr or the transfer rate (> 30m3/hr) is corresponded with pressure (950 - 1050 kPa) as per pump curve.
It is understood that pump is not changed (no change of area, speed, etc.), thus there is no change of pump rate. However, I can't explain it with pump curve.
Could you kindly correct me?
Thank you very much for your advice.