const GAS_CONSTANT_SI = 8.31446261815324 # Exact since May20, 2019; https://en.wikipedia.org/wiki/Gas_constant
const PA_IN_BAR = 1e5               # Сколько паскалей в баре
const BOLTZMANN_SI = 1.380649e-23 # Exact since May 20, 2019; https://en.wikipedia.org/wiki/Boltzmann_constant
const C3_TC = 369.85 # propane critical temperature (K)
const C3_VC = 2e-4 # propane critical volume (m³ / mol)
const C3_ZC = 0.27626 # propane critical Z-factor (dimensionless)
const C3_OMEGA = 0.1524 # propane acentric factor
