Ilmanvaihtolähde

Ilmanvaihtolähde refers to the source of fresh air in a building's ventilation system. In simpler terms, it's where the air that keeps your indoor environment healthy and comfortable comes from. This fresh air is crucial for diluting indoor pollutants, removing moisture, and providing the oxygen needed for occupants.

There are several types of ilmanvaihtolähde. The most basic is natural ventilation, which relies on wind pressure and temperature differences to draw fresh air in through openings like windows and doors. However, this method is often insufficient and difficult to control, especially in modern, tightly sealed buildings.

Mechanical ventilation systems employ fans to actively bring in fresh air. This can be done through a supply-only system, where fans push fresh air into the building, or a balanced system that uses both supply and exhaust fans to control airflow precisely. Often, the incoming air is pre-heated or pre-cooled to maintain comfortable indoor temperatures and can be filtered to remove dust and other particles.

Heat recovery ventilation (HRV) and energy recovery ventilation (ERV) systems are advanced forms of mechanical ventilation. They capture heat or both heat and moisture from the outgoing stale air and transfer it to the incoming fresh air, significantly reducing energy consumption for heating and cooling. The ilmanvaihtolähde in these systems is carefully designed to ensure efficient air exchange while minimizing energy loss. The location and design of the ilmanvaihtolähde are important for ensuring adequate fresh air supply and minimizing noise and drafts.