土坯房建筑能耗计量与节能效率比较

Comparative Building Energy Consumption Calculation and Energy-saving Efficiency for Adobe House

本文以农村土坯房建筑节能效率为研究对象,分析了土坯房的建筑生命周期特征,建立了土坯房建筑能耗清单分析流程;提出了基于LCA的土坯房建筑能耗计量清单和建筑能耗具体计量公式,分为建筑材料生产、建筑设计建造、建筑使用维护、建筑拆除处置等四个计量阶段;进而建立了土坯房生命周期的建筑总能耗计量方法。选择湖北省某村的一栋土坯房和一栋新建节能农房作为节能效率比较研究实例,对两栋建筑的生命周期各阶段能耗分别进行了计量,并进行了建筑节能效率评价比较,还对两栋建筑的实际节能效果进行了现场热工性能检测比较。研究结果表明,改造后的土坯房生命周期能耗和热工性能都明显优于当地按节能标准设计建造的新建房,节能效率显著,具有保留和借鉴价值。

Taking the energy-saving efficiency of adobe house in country as the object of study in this paper, the life cycle characteristic of adobe house was analyzed, and the analysis process of building energy consumption list of adobe house was set up; the consumption calculation list and the calculation formulas of building energy of adobe house based on life cycle assessment were established. The calculation process was divided into four stages： building materials production, building design and construction, building use and maintenance and building demolition. Then, the calculation method of total energy consumption of adobe house was set up. Two buildings, one renovation adobe house and one new construction house at Yanhe village of Hubei province, were selected in the comparable case study. The comparable assessments of building energy consumption were completed which including renovation adobe house and new construction house. Moreover, the energy-saving efficiencies of two kind of buildings were calculated, and the field test of thermal performance of energy-saving result of two kind of buildings were also made. The evaluation result of case study shown that the energy consumption and the thermal performance of renovation adobe house were all better than new construction house. The energy-saving efficiency of renovation adobe house is more remarkable.