PWL Calculator

L30 0dB

Reference case

1.318

18.08 kg/kmol

703 K

36 kg/s

5.7 Mpa

1.8 Mpa

L30 is the sound pressure level at 30 m, expressed in decibels

k is the ratio of the specific heats in the gas, dimensionless

M is the relative molecular mass of the gas

T is the gas temperature, expressed in K

qm is the mass flow through the valve, expressed in kg/s

P1 is the absolute static pressure upstream of the restriction (e.g. pressure relief valve nozzle)

P2 is the absolute static pressure downstream of the restriction