Air changes per hour
Compare ventilation flow with room volume.
Your numbers
Air changes per hour
Even perfect mixing no guarantee say contaminants go comot. This no assess ventilation safety or infection risk.
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You fit keep up to three snapshots for this tab. Loading one go replace the present inputs.
Formula
Use ACH = Q/V. Q na measured airflow for m³/h and V na room volume for m³. ACH na air changes per hour; e na flow-to-volume ratio, e no guarantee contaminant removal.
Compare ventilation flow with room volume.
Example wey show the calculation
- Room volume (m³)
- 60
- Measured airflow (m³/h)
- 300
- Air changes per hour
- 5 1/h
- Ideal time to replace one room volume
- 12 minutes
Where e fit work and limits
Even perfect mixing no guarantee say contaminants go comot. This no assess ventilation safety or infection risk.
We check inputs for missing values and allowed ranges. Result wey pass the finite numeric range no go show. Rounding affect wetin display, while calculation use the model numeric precision.
Check your units and assumptions before you rely on result. Changing label no convert currency or physical unit.
Version of di formula: 2207f972d708 · Example don get check: