AnyGasCompressor

AnyGasCompressor calculates single-stage turbo-compressor compression for many pure gases. Thermodynamic properties come from a Helmholtz equation of state.

Precise numeric entry and full stream properties.

WHAT IT IS

A design point calculation — not a process simulator and not a machine map.

• Dry inlet gas (superheated / supercritical vapour)

• Isentropic efficiency η_s as input (η_s = Δh_s / Δh)

• Shaft power P = ṁ · Δh

• Polytropic efficiency η_p shown from the end states

• Pressure ratio π = p₂ / p₁

GASES

Always in the Gas menu:

• Air (dry)

• Nitrogen (N₂)

• Oxygen (O₂)

• Carbon dioxide (CO₂)

• Hydrogen (H₂)

• Methane (CH₄)

• Argon (Ar)

• Water / steam (H₂O)

• Ammonia (NH₃)

• Ethane (C₂H₆)

• Propane (C₃H₈)

• Propylene (C₃H₆)

• Ethylene (C₂H₄)

• Helium (He)

• Carbon monoxide (CO)

• n-Butane (n-C₄H₁₀)

• Isobutane (i-C₄H₁₀)

• Sulfur dioxide (SO₂)

• Chlorine (Cl₂)

• Hydrogen sulfide (H₂S)

Specialty gases (Info → show specialty gases):

• Nitrous oxide (N₂O)

• Sulfur hexafluoride (SF₆)

• Neon (Ne)

• Krypton (Kr)

• Xenon (Xe)

• 1-Butene (1-C₄H₈)

• Isobutene (i-C₄H₈)

• Hydrogen chloride (HCl)

• Ethylene oxide (C₂H₄O)

• Vinyl chloride (C₂H₃Cl)

Missing a gas? Further gases can be added on request if a suitable Helmholtz equation of state exists. Use the in-app message.

FEATURES

• Helmholtz equation of state

• Precise numeric input; landscape compact keypad

• Full states: h, s, v and volume flow at inlet and discharge

• Solve for power, mass flow or isentropic efficiency

• Wet/liquid inlet warning (lower p or raise t)

• Copy results to the clipboard

• Light and dark themes, German and English UI

HOW IT WORKS

• Choose the gas

• Enter inlet pressure, inlet temperature and discharge pressure (bar absolute, °C)

• Enter two of: mass flow, η_s, power — the third is calculated

• Check discharge temperature, Δh, π and η_p

DEFAULTS

1 bar a / 20 °C → 3.0 bar a, 10 kg/s, η_s = 80 %.

Exception: water at 1 bar is liquid at 20 °C — the app starts steam about 20 K above saturation (~120 °C).

UNITS

Pressure: bar absolute · Temperature: °C · Mass flow: kg/s · Power: kW · Efficiency: % · Volume flow: m³/s (actual, at local v)

IMPORTANT

Coded in good faith without warranty of correctness or completeness. Always check critical calculations. Stay within the limits of each gas equation of state.

MyEngineeringTools · myengineering@posteo.de