AIRExpander

Christian Peter Kaiser

About this app

AIRExpander calculates the expansion of dry standard air for turbo expanders — for engineering estimates, teaching, and quick “what if” checks on the go.

HOW IT WORKS
• Set inlet pressure, inlet temperature and exhaust pressure with sliders
• Choose what to solve for with the calculate icon: power, mass flow or isentropic efficiency
• The other two operating quantities stay inputs; results update live as you drag
• See exhaust temperature, volumetric flows and enthalpy drops at a glance

DESIGNED FOR ENGINEERS
• Free tier: slider-based input only — fast interactive exploration
• Clear highlight of the calculated quantity
• Light and dark themes (system / light / dark)
• Landscape layout with inlet and exhaust side by side
• German and English interface
• In-app help and legal notice

UNITS
• Pressure: bar absolute
• Temperature: °C
• Mass flow: kg/s
• Power: kW
• Efficiency: %
• Volume flow: m³/s
• Enthalpy drop: kJ/kg

What’s new

AIRExpander 2.0 — modern refresh
• New Material Design interface (light & dark)
• Same dry-air expander calculation as before
• Tap the calculate icon to solve for power, mass flow or efficiency
• Live updates while you move the sliders