苏州水乡传统民居节能改造设计研究

Research on energy-saving renovation design of traditional dwellingsin Suzhou water town

苏州传统民居历史悠久,但在热环境及节能方面存在些许不足,为响应可持续发展战略,以苏州传统民居为研究对象,实测冬夏两季典型日室内外温度并分析民居存在的问题,在保护民居风貌的前提下,利用正交实验提出16种改造方案,通过DeST-h软件模拟能耗,综合经济性及节能率选出最优方案,并对改造前后室内外温度进行模拟和对比。研究表明,最优改造方案为外墙选择100 mm厚EPS保温板,屋面选择80 mm厚EPS保温板,外窗选择9 mm普通中空玻璃。改造后节能率为38.6%,净现值为19775.72元,静态投资回收期为9.5年。改造后冬季室内温度提升3.9℃,夏季室内温度降低2.1℃,有效改善了室内热环境。

Traditional dwellings in Suzhou have a long history,but there are some shortcomings in thermal environment and energy saving.In order to respond to the sustainable development strategy,this paper takes Suzhou traditional dwellings as the research object,analyzes the indoor and outdoor temperatures of typical days in winter and summer,and puts forward 16 renovation schemes by orthogonal experiments on the premise of protecting the style and features of dwellings.The DeST-h software is used to simulate energy consumption,the best scheme is selected by comprehensive economy and energy saving rate,and the indoor and outdoor temperatures before and after renovation are simulated and compared.The research shows that the best renovation scheme is:100mm EPS insulation board for exterior wall,80mm EPS insulation board for roof and 9mm ordinary insulating glass for exterior window.After transformation,the energy saving rate is 38.6%,the net present value is 19,775.72 yuan,and the static investment payback period is of 9.5 years.After renovation,the indoor temperature increased by 3.9℃in winter and decreased by 2.1℃in summer,effectively improving the indoor thermal environment.