摘要:为了改善湖北地区现有农村住房结构老化、围护结构热工性能不佳导致的住宅能耗增加及室内热环境差等问题，本研究致力于对湖北地区典型农宅的围护结构进行改造。研究采用能耗模拟软件Ecotect对不同围护结构改造方案的节能效率进行定量分析，并运用熵值法和多因素正交实验分析了16种具有代表性的改造方案，优选出兼顾节能性和经济性的最佳方案。结果表明，单因素改造方案的节能效果排序为：屋顶改造 > 门窗改造 > 外墙改造。在熵值法下的多因素组合改造方案初选中，节能率、节能改造方案初投资、节能改造收益、静态投资回收期及净现值（NPV）的所占权重分别为0.2、0.26、0.21、0.14和0.19。该研究为湖北地区现有农宅的节能改造提供了新的思路，并在围护结构改造方案优选中具有一定的参考价值。

Abstract: To address the issues of aging structures and suboptimal thermal performance of envelope structures in existing rural housing in Hubei, which lead to increased energy consumption and poor indoor thermal environments, there is an urgent need to renovate these envelope structures. This study focuses on the renovation of envelope structures in a typical rural house in Hubei, utilizing the energy consumption simulation software Ecotect to quantitatively analyze the energy-saving efficiency of various renovation plans. Using the entropy method and multi-factor orthogonal experiments, 16 representative renovation plans were analyzed to identify those that balance energy efficiency and economic viability. The results indicate that the effectiveness of single-factor renovation plans, in descending order, is roof renovation > door and window renovation > exterior wall renovation. In the multi-factor combined renovation plan selection based on the entropy method, the weights of energy-saving rate, initial investment in energy-saving renovation, energy-saving renovation benefits, static payback period, and Net Present Value (NPV) are 0.2, 0.26, 0.21, 0.14, and 0.19, respectively. This study provides a new approach for energy-saving renovation of existing rural houses in Hubei and offers valuable insights for selecting optimal renovation plans.