Ilmankierron
Ilmankierron is a Finnish term that translates as "air circulation" and commonly denotes the movement and exchange of air in indoor spaces or systems. The concept covers both natural processes, driven by temperature and pressure differences, and mechanical systems that control airflow for ventilation, thermal comfort and pollutant removal.
In buildings, effective ilmankierron is critical for indoor air quality (IAQ), occupant health and energy performance.
Types of ilmankierron include natural ventilation (windows, vents, stack and wind effects), mechanical ventilation (supply, exhaust
Assessment and regulation of ilmankierron rely on measurements like airflow rates, ACH and indoor CO2 levels,
In sum, ilmankierron is a central element of building design and operation, affecting comfort, health and energy