# Gas-charged accumulator sizing
# Scope: Polytropic gas accumulator volume swing at absolute pressures.
# Status: illustrative worked example; engineering review pending.
# Inputs are example values. Checks are editable example requirements, not standards.

gasVolume = 1 L
precharge = 5 MPa
lowPressure = 6 MPa
highPressure = 10 MPa
exponent = 1.4

lowGas := gasVolume*(precharge/lowPressure)^(1/exponent) [L]
highGas := gasVolume*(precharge/highPressure)^(1/exponent) [L]
delivery := lowGas-highGas [L]

check delivery target: delivery >= 0.2 L

scenario alternative: gasVolume = 0.8 L