2-3 機械換気設備.pdf

Mechanical ventilation equipment is a system that replaces stale air in buildings with fresh outside air, and is mandatory in certain rooms under the Building Standards Act. Insufficient ventilation can lead to the accumulation of carbon dioxide and house dust, causing allergy symptoms and headaches. The Act requires planned ventilation suitable for the room's purpose, which is important for human health and the longevity of buildings. There are three types of ventilation methods: mechanical ventilation, natural ventilation, and a combination of both. Mechanical ventilation uses fans to forcibly exchange air, while natural ventilation relies on temperature differences and wind pressure to exchange air. The choice of ventilation method depends on the location and purpose of the room.