GB 50189-2015 第2.0.7条
| | **Shading coefficient**: Under identical conditions, the ratio of solar radiant heat gain through an external window (or transparent curtain wall) to the solar radiant heat gain through the same area of 3 mm thick ordinary clear glass. In hotel buildings, when the window-to-wall area ratio on the east and west orientations is ≥0.20, the shading coefficient of external windows (or transparent curtain walls) should not exceed 0.45 (except in severe cold regions). |