| 摘要 |
A thermally insulating panel (3), or shutter, can either be fixed or movable and is fitted inwardly of a window in a building in order to retain warm air. The side and lower edges of the panel are arranged to fit closely to the adjacent structure in order to contain dense air cooled by contact with the glazing and to minimise escape of air into the room. The insulating panels may be raised or lowered using guide means and preferably shutter the window in an upward vertical direction. A second pivotable panel (14, figure 2) may be included to provide shading from the sun or a plurality of counterbalanced panels (figure 6) may be provided to form a shutter arrangement. A gap (8) is preferably present at the top of the panel (3) to allow convection of air into the room. A heat collection and storage system may also be provided in the form of either a heat transfer fluid (15, figure 4) or phase change material (20, figure 5). The outer faces of the shutters are also preferably switchable between absorbing or reflecting solar radiation. |
