Hydraulic Reservoir Size Calculator by GPM
A first-pass hydraulic reservoir size comes from pump flow in GPM or L/min, target residence time and the usable oil fraction of the tank.
hydraulic reservoir size calculator gpm hydraulic tank size calculator gpm hydraulic tank volume calculator pump flow
Residence-time rule
usable oil volume = pump flow * residence time
Headspace allowance
tank volume = usable oil volume / usable fraction
Design follow-up
Reservoir volume is only a first screen. Final tanks still need heat rejection, deaeration, suction head, baffles, expansion space and return-line velocity checks.
Related pages
- Pipe pressure drop calculator - Darcy-Weisbach loss, head and velocity from flow and pipe ID.
- Pipe size by flow velocity - pick a first-pass pipe ID from flow and target velocity.
- Pump flow and HP calculator - pump displacement, pressure, flow, kW and horsepower.
- Pump NPSH calculator - available suction head and NPSH margin.