sisälämmönvaihtimen
Sisälämmönvaihdin is a Finnish term that translates to "indoor heat exchanger" or "domestic heat exchanger." It refers to a device used in building ventilation systems, particularly in heat recovery ventilation (HRV) or energy recovery ventilation (ERV) units. The primary function of a sisälämmönvaihdin is to transfer heat between the outgoing stale air from inside a building and the incoming fresh outdoor air.
In a typical setup, stale, warm air from the interior of the building is drawn through one
This process preheats the incoming fresh air, reducing the energy demand on the building's primary heating