Abstract

With the increase of residents’ requirements for the living environment, the current indoor thermal environment cannot meet the needs of modern rural residents who live in the northeast of Sichuan, China. Passive energy-saving strategies can not only improve the thermal performance of envelopes but also create high economic benefits. Evaluating the application effect of passive energy-saving strategies for traditional dwellings can provide a guide for local residents and policy-makers to select rational passive strategies. Seven energy-saving strategies are proposed based on the current local building construction and heat transfer model, and then their energy-saving potential is evaluated by using EnergyPlus and the dynamic investment payback period method. Results show that adding exterior envelope insulation and setting on-top sunspaces on the roof simultaneously can save 83.9% of building energy consumption. But the most economic energy-saving strategy is only employing exterior envelope insulation for local traditional dwellings when considering the economy. It can save 842 CNY/m² during 100 years and its dynamic investment payback period is 14.1 years. In addition, building orientation also affects the energy-saving effects and the energy-saving rate can be increased by 8.4% under the optimal orientation (facing south) compared with the worst orientation (facing west).

中文翻译：

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川东北农村传统民居外墙被动节能策略应用评价

摘要

随着居民对居住环境要求的提高，目前的室内热环境已不能满足居住在川东北地区的现代农村居民的需求。被动节能策略不仅可以提高信封的热性能，而且可以创造很高的经济效益。评估传统住宅被动节能策略的应用效果，可为当地居民和决策者选择合理的被动节能策略提供指导。基于当前当地的建筑结构和传热模型，提出了七种节能策略，然后利用EnergyPlus和动态投资回收期方法对其节能潜力进行了评估。结果表明，同时在屋顶增加外围保温层和设置顶部阳光空间可以节省83.9%的建筑能耗。但从经济角度考虑，最经济的节能策略是仅对当地传统住宅采用外墙保温。可节省842元/平方米² 100年，动态投资回收期14.1年。此外，建筑朝向也影响节能效果，最佳朝向（朝南）比最差朝向（朝西）节能率可提高8.4%。