The passive solar design employs surfaces in and around your home to collect energy from the sun to offer warmth in the winter and block power from the sun to avoid overheating in the summer. 

You may save your home’s energy use by up to 25% by carefully selecting and arranging windows, walls, and flooring depending on their heating properties. 

You may use passive solar design principles with a solar photovoltaic system that generates electricity to boost energy efficiency and remove your dependency on fossil fuels. 

How is passive solar design different?

Apertures 

Apertures are simply windows or open areas with total or near-complete sun exposure and are ideally south-facing. 

They’re also known as “glazing,” and the amount of glazing required on a sun-facing surface is governed by the structure’s environment. Typically, windows constructed for solar heating have a specific coating that reflects ultraviolet (UV) radiation away from the house. 

Absorbers 

Absorbers are hard surfaces that face the sun directly and are designed to absorb (rather than reflect) solar energy in the form of heat. 

Heat

The substance behind or under an absorber that traps heat and slowly releases it is thermal mass. Thermal mass comprises brick, stone, and tile, but it can also be water kept in an absorber, such as a dark-colored tank. 

Distribution 

Solar heat is distributed in three methods, with the help of fans and blowers in some cases. 

Control 

Awnings, roof overhangs, and blinds allow unique control over the amount of heat that enters your home, while insulation and ventilation measures regulate the amount of heat that escapes. 

This is especially crucial in summertime when keeping things cold necessitates preventing the light from reaching absorbers.

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