Gas-charged accumulator volume from usable oil volume and pressure band using the isothermal (n = 1) Boyle’s law.
Formula
$$ V_0 = \frac{\Delta V}{\frac{P_0}{P_1} - \frac{P_0}{P_2}} $$
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| $V_0$ | Gas-side accumulator size | L | result |
| $ΔV$ | Usable oil volume over the pressure band | L | duty cycle |
| $P_0$ | Nitrogen pre-charge pressure | bar | set at commissioning |
| $P_1$ | Min working (accumulator empty) | bar | system limit |
| $P_2$ | Max working (fully charged) | bar | system limit |
Sources
- ISO 4413 - Hydraulic fluid power systems.