Pressurized Tank vs. VFD Pump
Pressurized Tank vs. VFD Pump
(OP)
I have a project where we are doing some energy savings measures.
the site has a pump set at 90psi that supplies pressurized tank at 60psi which then delivers to the building. the pumps are originally constant speed.
we are thinking of adding VFD on the pumps but the facility people were frightened to death.
any support on that?
the site has a pump set at 90psi that supplies pressurized tank at 60psi which then delivers to the building. the pumps are originally constant speed.
we are thinking of adding VFD on the pumps but the facility people were frightened to death.
any support on that?





RE: Pressurized Tank vs. VFD Pump
RE: Pressurized Tank vs. VFD Pump
thread407-174752
RE: Pressurized Tank vs. VFD Pump
the pumps are 60 HP each and currently they are constant speed/flow. savings from adding VFD on the speed/flow would bring in good savings.
i was asking about the booster pump system vs the prssurized tank systems in domestic water.
Thanks again
RE: Pressurized Tank vs. VFD Pump
In general a vfd will save you money IF the amount of water the pump produces varies. If the pump runs 24-7 at capacity, the only saving would be the increased power factor. To figure it out, I know yaskawa offerings a energy calculator on its website I think ABB to.
Also you need to consider local code. Is you pressurized storage part of you fire protection suppy?