Palautusilmalähteet

Palautusilmalähteet, often translated as return air inlets or exhaust air grilles in English, are components of a building's ventilation system. Their primary function is to collect indoor air that has been circulated through the building and direct it back to the central air handling unit. This returned air is then typically filtered and mixed with fresh outdoor air before being re-conditioned and distributed back into the occupied spaces.

These inlets are strategically placed throughout a building, commonly in rooms, corridors, and common areas. They are designed to capture stale air, pollutants, and excess moisture, preventing their buildup and contributing to a healthier indoor environment. The size and placement of palautusilmalähteet are crucial for efficient air circulation and can impact the overall performance of the ventilation system.

In some systems, particularly those with heat recovery, the air drawn through the palautusilmalähteet is used to pre-heat or pre-cool incoming fresh air, thus saving energy. The design of these inlets can vary, ranging from simple grilles to more complex units that may incorporate sound attenuation or air filtering capabilities. Proper maintenance, including regular cleaning of the grilles and filters, is essential to ensure optimal performance and air quality.