Gas Mixing Calculator — Hazem ElMancy

Component Composition

Component	Formula	Mole %	MW (g/mol)	Tc (K)	Pc (bar)	ω —	LHV (MJ/Nm³)
TOTAL			—

Operating Conditions & EoS

Model:

Temperature

Pressure

Pitzer (simplified Lee-Kesler): Z⁰ + ω·Z¹. Valid for Pr < 10, Tr > 0.7. Switch to PR or SRK for accurate real-gas properties.

Vapor Fraction & Phase State Rachford-Rice flash (PR/SRK Ki)

Enter composition and conditions to calculate phase state.

Mixture Properties Pitzer

Molecular Weight—g/mol

Specific Gravity (rel. air)——

Density @ conditions—kg/m³

Density @ Nm³ (0 °C, 1 atm)—kg/Nm³

Compressibility Factor (Z)——

Pseudo-critical Tc—K

Pseudo-critical Pc—bar

Acentric Factor (ω)——

Mixture Cp (ideal)—kJ/(kg·K)

Cp/Cv (γ) — ideal gas——

Speed of Sound—m/s

Dynamic Viscosity—cP

Joule-Thomson Coeff.—K/bar

LHV (molar basis)—MJ/Nm³

LHV (mass basis)—MJ/kg

Wobbe Index—MJ/Nm³

Calculation Trace

Composition Profile

Gas Mixing Calculator

Mixture MW, real-gas density, Z-factor, phase-state screening, LHV/Wobbe, viscosity and acoustic velocity

Screening-level property calculation. Not a substitute for HYSYS / UniSim / REFPROP / project property-package validation.

Molecular Weight

—g/mol

Z-Factor

——

Density

—kg/m³

Phase State

—

Mixture Properties

Phase / Flash Summary

PR/SRK vapor fraction uses Wilson Ki + Rachford-Rice screening. Cubic EoS uses classical mixing rules with kij = 0.

Composition

Component	Formula	Mole %	MW	Tc, K	Pc, bar	ω	LHV, MJ/Nm³

Warnings / Limitations

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