FieldengThermal & HVAC
ACH from Airflow
Air changes per hour from measured airflow and room volume. Inverse of THERM-09.
Thermal & HVAC
Air changes per hour from measured airflow and room volume. Inverse of THERM-09.
App id: THERM-10. Reference version 1.0.
How to fill it
Fill the inputs. The tool shows the outputs.
On the tool screen, Calc is the working sheet. Presets stores values you reuse. Reference is the formula, assumptions, and provenance below.
Formula
ACH = V̇ / VolumeInputs
| Name | Unit |
|---|---|
| Airflow (camera) | ft3/min |
| Room volume | ft3 |
Outputs
| Name | Unit |
|---|---|
| Air changes (hero result) | ACH |
Diagnose
This tool does not attach diagnose observations.
Assumptions
- Volume is the occupied space you intend to turn over.
Provenance
- Pair with a traverse or hood reading.