Pump & System Interaction

[@oliveiralrm]

Excelent course, Thanks

[@paulleslie5855]

An important fact is that the BEP represent the point of operation whereby the flow stream approach the impeller has the most tangent trajectory. The further you depart from the BEP the fluid approach becomes rotational and recirculating becomes more prévenant. As the recirculating increases we approach the risk of cavitation becoming problematic. This will manifest as pump noise and vibration in addition to the consequence of high impact loading of the impeller at the position where any gaseous phase flow converts to liquid by virtue of the local pressure

[@paulleslie5855]

I like to try and establish a system operating pt slightly to the right of the BEP as when the pipe scales which’s normally but not always the case the friction head will increase and the operating point will move toward the BEP. That said I have also dealt with pipe ranges whereby the pipe range tests smoother with use but with water the latter is normally correct.

[@paulleslie5855]

Note plotting.a single operating pt is like a university#tudemt calculating flow resistance to decimal places. You always need to plot envolées for both the pump and system as the pump performance will vary over, time and due to variability between pumps of the same type and the system curve will definitely vary over time for various reasons. It would be nice if the plot capability could have an option for printing an envelope curve based on sensitivities applied to the unknowns. Note typically it,maybe be time to consider pump overhaul after a drop of 10% efficiency. Other system performance needs may alternately set the max tolerable wear pt for a pump.

[@lawyinghui7899]

Can you please explain how to interpret Vol. Flow Rate Jct Net and Vol. Flow Rate Thru Jct ?

[@dheyaalgallaf6060]

What if pump deliver to two destinations

[@hamzadriss1358]

Thank you so much