合肥地区居住建筑能耗影响因素敏感性研究

Sensitivity of factors affecting energy consumptionof residential buildings in Hefei area

为了提升居住建筑节能性能,对合肥地区居住建筑围护结构节能现状进行调研,选取某一典型居住建筑为研究对象,利用DeST软件建立建筑模型,选取外墙传热系数、屋面传热系数、外窗传热系数、外窗太阳得热系数、南向窗墙比、北向窗墙比等6项因素进行能耗模拟,研究各因素对建筑冷热负荷的影响,通过能耗模拟结果进行影响因素敏感性分析。研究表明:各因素的建筑冷热负荷敏感性差异显著,外墙传热系数对建筑总负荷敏感性最高,其次分别为北向窗墙比、外窗传热系数、南向窗墙比、屋面传热系数、外窗太阳得热系数。研究结果可为居住建筑围护结构节能设计提供参考。

To enhance the energy efficiency of residential buildings,a survey was conducted on the current energy performance of building envelopes in Hefei area.A typical residential building was selected as the research subject,and a building model was established using DeST software.Six factors were chosen for energy simulation:external wall heat transfer coefficient,roof heat transfer coefficient,external window heat transfer coefficient,solar heat gain coefficient of external window,south-facing window-to-wall ratio,and north-facing window-to-wall ratio.The study aimed to investigate the impacts of these factors on the building′s thermal loads through energy simulations,followed by a sensitivity analysis based on the results.Research indicates that the sensitivity of building loads to various factors is significantly different.Among them,the heat transfer coefficient of the outer wall has the highest sensitivity to the total load,followed by the north-facing window-to-wall ratio,the heat transfer coefficient of the exterior windows,the south-facing window-to-wall ratio,the roof heat transfer coefficient,and the solar heat gain coefficient of the exterior windows.The findings may serve as a reference for energy-efficient design of building envelopes in residential architecture.