From working pressure range, gas pre-charge pressure and oil volume change, size a bladder accumulator under isothermal or adiabatic assumptions for shock absorption, leakage make-up or auxiliary power.
皮囊式蓄能器容积计算，支持等温（慢速）与绝热（快速）过程
| Item | Formula / Note | Source / Standard |
|---|---|---|
| Polytropic gas process | p · V^n = constant, with n = 1 isothermal and n = kappa adiabatic | Boyle R. (1662), New Experiments Physico-Mechanicall; adiabatic relation |
| Isothermal relation | For slow charging and discharging, p1 · V1 = p2 · V2 applies | Boyle R. (1662), New Experiments Physico-Mechanicall |
| Usable volume | Usable volume ΔV = V1 - V2, the gas volume difference between the two working pressures | ISO 5598:2020, Fluid power systems and components - Vocabulary |
| Pre-charge pressure | Gas pre-charge is chosen from the minimum working pressure; too low reduces usable volume | ISO 5598:2020, Fluid power systems and components - Vocabulary |
蓄能器容量计算工具用于皮囊式蓄能器容积选型。根据充气压力、最低与最高工作压力、所需排油量，按等温过程（慢速补油保压）或绝热过程（快速排油应急）计算蓄能器所需总容积，并给出含安全余量的推荐容积。