Sisääntuloilma

Sisääntuloilma refers to the fresh air that is brought into a building from the outside. This air is essential for maintaining good indoor air quality, providing occupants with oxygen, and diluting indoor pollutants such as carbon dioxide, volatile organic compounds, and odors. Proper ventilation systems are designed to control the amount of sisääntuloilma entering a building, ensuring it is sufficient for healthy living and working conditions.

The quality of sisääntuloilma is a significant factor in overall indoor air quality. Outdoor air can contain various contaminants, including particulate matter, pollen, industrial emissions, and vehicle exhaust. Therefore, filtration systems are often incorporated into ventilation units to remove these airborne particles before the air is supplied indoors. In some cases, heating or cooling may also be applied to the sisääntuloilma to regulate the indoor temperature and improve comfort.

The provision of adequate sisääntuloilma is a key principle in building design and management, impacting occupant health, comfort, and productivity. Building codes and standards typically specify minimum requirements for the rate of sisääntuloilma per person or per unit of floor area. Insufficient sisääntuloilma can lead to a buildup of indoor pollutants, resulting in symptoms often referred to as "sick building syndrome," characterized by headaches, fatigue, and respiratory irritation. Conversely, excessive amounts of unconditioned sisääntuloilma can lead to discomfort and increased energy consumption for heating or cooling.