How does the SolarVenti work from a technical point of view?
The system is free to run and is not connected to the main electricity supply. It is supplied with electricity via a solar cell. When the sun shines it warms up the air in the absorber and the integrated solar cell produces electricity for the built-in fan which blows the heated air into the house. Fresh air from outside is sucked / pulled in through a perforated back plate and a 2 mm layer of felt. The air velocity is so low that only extremely small amounts of dust, pollen etc. are drawn into the system. When the system is running, air flow remains inside the panel. When the system is switched off, it cools itself down even if there is bright sunshine. The heat rises inside the solar panel and exits via the felt and the back plate (open construction).
