Solar collector with double glazing on a wall that faces south; it is used to distribute heat in a room.
Space between the wall and the glazing in which air flows; as air heats up on contact with the wall, it rises naturally in this space.
Masonry structure that is about 15 in thick; it has a black surface to absorb heat from the Sun to heat the air.
Fresh air enters the home at the base of the air gap and is heated on contact with the wall.
Black wall that catches solar radiation and converts it into heat.
Each of two glass plates placed in front of the concrete wall; they allow solar radiation to penetrate and retain the heat.
Air heated by solar radiation is introduced into the room by convection.
Flap gate used to control the entry of heat into the home.
All the electromagnetic waves emitted by the Sun.