| 摘要 |
Canopy (1) constitutes a system for the radiant cooling of air masses held between the ground and canopy (1) and consists of an optically selective structure letting infrared radiation emitted by the ground through to escape into outer space, but reflecting visible, ultraviolet and near infrared solar radiation, both directly incident and scattered by the atmosphere. The canopy (1) is divided into cells (2), depending on the design, of different cross-section geometries,preferably hexagonal (honeycomb), vertical or sloping northward (N) in the northern hemisphere or southward (S) in the southward hemisphere, preferably at 45°, or galleries running W-E, while the walls of cells (2) forming part of the canopy are stretched on a mechanically strong skeleton that makes them rigid, or the rigidity of canopy (1) is ensured by the pressure of a gas filling cells (2). |
