Airing: airing system
In the plus energy settlement there is also controlled living space airing after an unusual principle. Instead of separate ones, one outlet simply Inhaleing and exhaling.
Similar with rotation heat exchangeris also here won back aerial heat.
Context description: waste air exchange heat recovery
sun solar plusenergy house sunhouse solarhouse plusenergyhouse houses sunhouses solarhouses plusenergyhouses settlement sunsettlement solarsettlement plusenergysettlement settlements sunsettlements solarsettlements plusenergysettlements village sunvillage solarvillage plusenergyvillage villages sunvillages solarvillages plusenergyvillages building sunbuilding solarbuilding plusenergybuilding buildings sunbuildings solarbuildings plusenergybuildings German Germany Freiburg high resolution Photo Photos pic pics picture pictures JPG JPEG