| 摘要 |
The shading system includes a plurality of shading elements forming groups of elements for each window of a building. The elements generally have non-horizontal and non-vertical slope and tilt angles. The slope and tilt angles are determined by the latitude of the building and compass bearing of a plane through the window. All of the elements for each window lie parallel to one another and are nonmovable. By calculating slope and tilt angles for each compass bearing and building latitude, the solar heat gain in the summer can be minimized and solar heat gain in the winter can be maintained.
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