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We have a project to replace pumps motor starters by VFDs in waste water pumping stations, and want to estimate potential electrical economy (in kwh)(i.e. pumps will run at slower rates but for longer periods, instead of running full speed for short periods). There is no flow control valve installed.
I know a lot of factors must be taken into consideration: motors specs, average daily pumped water volume for the station vs pumps capacity, static head, pumping curves, minimum speed allowed to prevent cavitation, etc...
Any advise or link to suggest?
I know a lot of factors must be taken into consideration: motors specs, average daily pumped water volume for the station vs pumps capacity, static head, pumping curves, minimum speed allowed to prevent cavitation, etc...
Any advise or link to suggest?