Wildfire Knowledge Graph · Smoke & Indoor Air
Working definition
Reuse of indoor air through an HVAC or filtration system rather than replacing it entirely with outdoor air.
In plain language
Reuse of indoor air through an HVAC or filtration system rather than replacing it entirely with outdoor air.
Why it matters
Recirculation is useful because it separates one specific part of wildfire behaviour, exposure, operations or evidence from nearby concepts that can otherwise be mixed together.