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既有建筑节能改造是实现降低建筑能耗的主要途径之一,通过对室内天棚的改造,使室内净空高度具有灵动性的同时,在层顶形成空气保温层,实现建筑运行节能目的。以南昌市高新区浙江大学科技园配套住宅为改造对象,通过鸿业负荷软件模拟并计算节能升降天棚安装后住宅建筑维持运行时负荷变化情况,初探其对夏热冬冷地区住宅建筑节能效应,发现节能升降天棚在室内房间上部形成空气缓冲层,改进了房间上部楼板的热工性能,对降低既有建筑的负荷具有明显作用。
The energy-saving retrofit of existing buildings is one of the main ways to reduce the building energy consumption. Through the renovation of the indoor ceiling, the height of the indoor air-space is flexible, meanwhile, the air insulation layer is formed on the top of the storey so as to achieve the purpose of energy saving in building operation. Taking the supporting housing of Science and Technology Park of Zhejiang University in Nanchang High-tech Zone as the rebuilding object, this paper simulates and calculates the load change of residential building after the installation of energy- It was found that the energy-saving lifting ceiling can form an air buffer layer in the upper part of the indoor room and improve the thermal performance of the upper floor of the room, which has a significant effect on reducing the load on the existing building.