I am doing active solar power for my science project and am making a solar air heater.
It's an example of active (not passive) right? I just want to be sure. Thanks.
did the guy below me just spam his company's photovoltaic cells which are totally irrelevant?
He said the heater would be passive (is he think of using a photovoltaic solar panel to power an electric heater? yes that would be passive)
I want to know how a passive air heater would work, how do you transfer hot air from the roof to the living space without a blower?