Therefore you want to allow the sun s light to shine on windows or even exterior walls only when it is cold outside and you want to block the sun s rays when it is hot outside.
Passive solar roof.
This concept is based on the principle that the sun s light streaming into your home s windows generates heat.
In passive solar homes effective weatherproofing and insulation and thus near airtightness is a necessity if primary reliance upon sunlight for climate control is to be possible.
Let s start with passive solar roof design.
Passive solar design refers to the use of the sun s energy for the heating and cooling of living spaces by exposure to the sun.
In addition the heat produced by the sun causes air movement that can be predictable in designed spaces.
It typically is constructed of containers holding 6 to 12 in 150 to 300 mm of water on a flat roof.
When sunlight strikes a building the building materials can reflect transmit or absorb the solar radiation.
A roof pond passive solar system sometimes called a solar roof uses water stored on the roof to temper hot and cold internal temperatures usually in desert environments.
Light colored homes reflect the sun s light reducing the amount of heat retained in the walls and therefore lowering summer cooling loads.