The energy-saving design on the building's perimeter structure can be interlocked by factors such as window opening, orientation, covering and insulation materials. These factors affect the energy consumption with the building. The Silaya Research Business office in Taiwan has conducted research about the external protective structure regarding office buildings in Taiwan, and analyzed the electricity consumption of various elements in the building's external protective construction. The analysis results are generally as follows:
1 The window opening rate in the external wall is a vey important factor for energy saving from the external wall. Reducing the window opening area ratio is the most important means of energy preserving, but reducing the window opening rate must also ensure and proper herbal lighting, and avoid the actual psychological closure. However, to the glass curtain wall that will pursues the transparency consequence, the energy-saving requirement could only be achieved by simply reducing the opening windows area and strengthening the heat-insulating design belonging to the opaque place.
2 External shading and insulated glass shielding would be the second most important elements for energy saving involving external walls. Glass products and external shading just about all affect the shielding rate. However, the installation of sun's rays visors and sunshade is a lot more effective than changing this glass material. The glass material might be selected from high reflectivity reflective tumbler and heat absorbing magnifying glaas (reflecting glass with too high reflectivity will cause glare pollution), so choose the suitable reflective glass.
3 The building orientation factor will be the third element of the energy-saving design on the external wall (accounting pertaining to 13. 8%). A large part of glass curtain wall ought to avoid the east as well as the west, and the long direction on the building should be used in a north-south direction.
Having shading measures is not only a necessary means for energy-saving design and style of glass curtain walls buildings, but also a new necessary means for developing design of high-standard cup curtain wall buildings.
