energy saving of curtain wall

The energy saving design of curtain wall, as the name implies, is to reduce the energy consumption of the building brought by the curtain wall. The building is connected with the outside world through the outer envelope (including the curtain wall), so the heat transfer and heat insulation effect of the curtain wall has a greater impact on the overall energy consumption of the building. The energy saving design of curtain wall is to determine the reasons that may lead to high energy consumption of curtain wall by analyzing different contents of thermal principle, and to develop effective treatment measures based on this result, which can ultimately improve the scientific nature and reliability of the overall design of the building. The curtain wall energy saving design should follow the principle of heat dissipation, heat transfer and heat insulation.   Thermal insulation performance refers to the heat transfer ability of the curtain wall impedance from the high-temperature side to the low-temperature side under the condition of air temperature difference on both sides of the modern curtain wall, excluding the heat transfer of air permeating through the gap. The insulation performance of curtain wall should be solved by controlling the total thermal resistance value and selecting the corresponding material. In order to reduce the heat loss, it can be improved from the following three aspects: the first is to improve the thermal insulation performance of lighting window glass, as far as possible to choose insulating glass, and reduce the opening fan; The second is to use the material with good heat insulation effect for the non-lighting part of the lining wall or setting the temperature core material; The third is to do airtight treatment and reduce ventilation. The heat insulation performance of the curtain wall structure should be solved by reducing the heat transmitted into the room and reducing the temperature of the inner surface of the envelope structure. Therefore, the material and structure form of the envelope structure should be reasonably selected. The selection of the shading transparent material and the setting of external shading are very effective measures to reduce the solar radiation heat entering the room. Doors and Windows, glass curtain wall surrounding the palisade structure with walls or other joint, if don't do special treatment, easy to form the thermal bridge, in cold region, hot summer and cold winter region, moderate, can cause condensation in winter, so the requirements for the special parts adopt insulation, sealing structure, especially must use moisture-proof type thermal insulation material, If it is not moisture-proof insulation material in winter, it will absorb the condensed water to become wet, reduce the insulation effect. The cracks in these structures must be sealed with sealing materials or sealants to eliminate the influence of external rain and condensed water.