What do different occupancies in a building require with regards to air exchange rates?

The requirement for different air exchange rates based on usage is crucial in maintaining optimal indoor air quality in various types of occupancies within a building. Each occupancy type—such as offices, residential spaces, commercial areas, and laboratories—has unique characteristics and needs that influence how indoor air is circulated and refreshed.

For instance, areas with higher levels of human activity or certain processes that emit pollutants, like kitchens or printing facilities, necessitate greater air exchange to dilute and remove contaminants effectively. In contrast, spaces with lower occupancy levels, or where less airborne contaminants are produced, might not require as high an air exchange rate.

Tailoring air exchange rates to specific uses allows for improved indoor air quality, better energy efficiency, and compliance with health and safety regulations. This concept is also supported by various standards and guidelines, which recommend specific air exchange rates for different types of spaces based on their intended uses.

Overall, understanding the impact of occupancy on air exchange needs is fundamental for professionals in indoor air quality management to ensure healthful environments.