The air exchange rate is measured using various methods, including:
1. Tracer Gas Method: A tracer gas is released into the space, and its concentration is measured over time to calculate the air exchange rate. 2. Carbon Dioxide Levels: In some cases, the CO2 levels are monitored as a proxy for estimating the air exchange rate, particularly in occupational health settings. 3. Mechanical Ventilation Data: For mechanically ventilated spaces, the air exchange rate can be calculated based on the capacity of the ventilation system and the volume of the space.
