How do I calculate Hydraulic Accumulator Sizing?

To calculate Hydraulic Accumulator Sizing: Enter Useful volume required, Maximum system pressure, Minimum working pressure and other values. Click Calculate. INDUGRID computes the result instantly using the formula: V_acc = V_useful × (P_max/P_min)^(1/n) / (1 − (P_min/P_max)^(1/n)) [n=1.4 adiabatic]. No registration required.

What units does the Hydraulic Accumulator Sizing calculator use?

The Hydraulic Accumulator Sizing calculator uses the following units: litre, bar. SI units are used by default.

Is the Hydraulic Accumulator Sizing calculator free?

Yes. The INDUGRID Hydraulic Accumulator Sizing calculator is completely free, requires no account or login, and works on desktop and mobile browsers.

Hydraulics

Hydraulic Accumulator Sizing

Calculate the required accumulator volume for energy storage, pulsation damping or emergency operation.

Units:

in LinkedIn

💡Accumulators are used for energy storage (peak demand), emergency operation (fail-safe), shock damping and leakage compensation. Pre-charge pressure (N₂) should be 0.6–0.9× minimum system pressure. Never use oxygen — explosion risk!

V_acc = V_useful × (P_max/P_min)^(1/n) / (1 − (P_min/P_max)^(1/n)) [n=1.4 adiabatic]

Input

Useful volume required iVolume of oil that needs to be stored or released in litres.

litre

Maximum system pressure iMaximum system pressure (charge pressure) in bar.

bar

Minimum working pressure iMinimum acceptable working pressure in bar — below this the system does not function.

bar

Gas pre-charge pressure iNitrogen pre-charge pressure in bar. Typically 0.6–0.9 × P_min.

bar

Result

Required accumulator volume [litre] —

Recommended standard size [litre] —

Pre-charge check —

Pressure ratio P_max/P_min —