Accumulator Calculation

Estimate accumulator volume for energy storage, pressure pulsation control, or hydraulic shock absorption.

Hydraulic accumulator sizing calculation

Accumulator Sizing Utility

Enter Operating Data

Size a hydraulic accumulator from required fluid displacement or check the available displacement of a known accumulator volume.

Calculation Mode

Accumulator Type

Application

Thermodynamic Process

Pressure Range

Enter absolute pressure in bar for all three values, not gauge pressure. Add local atmospheric pressure to a gauge reading (approximately 1.01325 bar at sea level). This ideal-gas estimate does not account for temperature changes or real-gas effects; confirm final sizing with the manufacturer.

Precharge Pressure P₀ (bar absolute)

Minimum Working Pressure P₁ (bar absolute)

Maximum Working Pressure P₂ (bar absolute)

Required Fluid Displacement ΔV (L)

Safety Factor

Calculation Result

Required Total Volume V₀ -- L

Enter valid operating data and calculate.

Effective displacement -- L Polytropic exponent -- P₀ / P₁ --

Recommended Standard Size -- L

Includes the selected safety allowance.

Precharge state: --
Minimum working point: --
Maximum working point: --
Pressure ratio P₂ / P₁: --

Calculated values are preliminary. Confirm pressure rating, fluid compatibility, temperature, and cycle life with the accumulator manufacturer.

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