Direct solar gain(redirected from Passive solar building design)
Also found in: Financial, Wikipedia.
Direct solar gain
1. Solar energy obtained directly through a window.
2. A method that relies on the orientation of the building, the location of its openings, the building’s materials and their attributes, the structure’s heat storage capabilities, and its insulation systems. In this method, sunlight is allowed to enter the building through south-facing windows. Light is absorbed directly by the thermal mass, which stores and releases the heat as the building cools. See also: Passive solar design