Heat exchangers are used to create a thermal exchange between exhausted stale air and incoming clean/fresh air, without any contact between the 2 air flows avoiding risks of contamination. In summary, the incoming air is preheated or cooled by the exhausted air without any cross between the 2 air flows thanks to a waterproof core.
The new preheated fresh air can be used for heating the building or for industrial process that requires heating like an oven in a bakery or in a printing company.
As heating buildings and processes generate costs and GHG emissions, using the energy at its full potential is a significant advantage.
