以苏南地区的一栋比较典型的独立式三层住宅为研究对象,对屋面、外墙、外窗分别进行节能改造后的节能效果进行分析,找出了影响节能效果的关键因素,并给出了优化节能改造设计方案和节能效果,提出了围护结构实现节能25%和50%围护结构传热系数限定值。 Taking a typical three-storey detached house in southern Jiangsu as the research object, this paper analyzes the energy-saving effect of the roofing, exterior wall and exterior window respectively after energy-saving transformation and finds the key factors that affect the energy-saving effect and gives Out of the optimization of energy-saving retrofit design and energy-saving effect, put forward the enveloping structure to achieve energy-saving 25% and 50% envelope heat transfer coefficient limits.