# AIRExpander

> Turbo expander calc for dry air: power, mass flow & efficiency with sliders.

Canonical page: [https://chrome-stats.com/d/com.myengineering.airexpander](https://chrome-stats.com/d/com.myengineering.airexpander)

## Overview

- **ID:** `com.myengineering.airexpander`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** Christian Peter Kaiser
- **Category:** TOOLS
- **Downloads:** 43
- **Version:** 2.0
- **Last updated:** 2026-08-10
- **First published:** 2021-09-12
- **Publisher country:** DE
- **Size:** 44 MB
- **Data as of:** 2026-09-14
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.myengineering.airexpander)
- **Website:** [https://www.myengineering.tools/](https://www.myengineering.tools/)
- **Privacy policy:** [https://www.myengineering.tools/privacy](https://www.myengineering.tools/privacy)

## Description

AIRExpander calculates the expansion of dry standard air for turbo expanders — for engineering estimates, teaching, and quick “what if” checks on the go.<br><br>HOW IT WORKS<br>• Set inlet pressure, inlet temperature and exhaust pressure with sliders<br>• Choose what to solve for with the calculate icon: power, mass flow or isentropic efficiency<br>• The other two operating quantities stay inputs; results update live as you drag<br>• See exhaust temperature, volumetric flows and enthalpy drops at a glance<br><br>DESIGNED FOR ENGINEERS<br>• Free tier: slider-based input only — fast interactive exploration<br>• Clear highlight of the calculated quantity<br>• Light and dark themes (system / light / dark)<br>• Landscape layout with inlet and exhaust side by side<br>• German and English interface<br>• In-app help and legal notice<br><br>UNITS<br>• Pressure: bar absolute<br>• Temperature: °C<br>• Mass flow: kg/s<br>• Power: kW<br>• Efficiency: %<br>• Volume flow: m³/s<br>• Enthalpy drop: kJ/kg

## Rankings

- #2,310,422 — Overall

## Permissions and access

### Permissions

- `com.android.vending.CHECK_LICENSE`
- `com.myengineering.airexpander.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`

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Source: [Chrome-Stats](https://chrome-stats.com/d/com.myengineering.airexpander)