Name two ways that sun can heat a home?
1 - One system is known as the solarwall fresh *air* heating system. The solarwall system is essentially a solar panel (also known as a solar air collector), but of different construction than the panels used for water heating. In the case of air heating the panels are constructed of, at the rear, a large metal plate painted black on the side facing the Sun and well insulated on its exterior A much more expensive version uses a *liquid* in the panels. This is heated by direct radiant heat from the Sun and pumped to a heat exchanger where it passes its energy to the circulated air of the building. Air panels are not as efficient as liquid panels, but are much less prone to problems such as leaks. Air collectors can be planned to be an integral part of new buildings where, rather than being attached to a wall as an addition, they can be designed to be an integral part of a Sun facing wall or roof. 2. Passive Solar Energy - Have you ever felt how hot it gets in a car on a sunny, winter day? The car feels hot because the sun heats it. The suns rays can also heat your home. Passive solar energy does not use equipment to heat your home. Sunshine comes through your windows and heats the walls and floors inside your house. Windows in your home that face *south* allow sunshine in when the sun is low in the sky during the winter.
