Optimization Analysis of Energy Saving Retrofit of Existing Farm Houses in Cold Area of Northern Hebei Province
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维普
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冀北严寒地区绝大多数既有农宅的围护结构未采取保温隔热措施,导致采暖能耗高、室内热环境差.为降低既有农宅采暖能耗,改善室内热环境,以冀北严寒地区某典型农宅为研究对象,基于DesignBuilder对该农宅进行采暖能耗模拟,探究农宅围护结构节能改造对采暖能耗的影响.利用投资收益比作为经济性评价指标对单因素节能改造和正交试验组合节能改造进行分析比较,得出适宜的节能改造策略.结果表明:外墙保温对建筑采暖能耗的影响较大,综合节能改造的最佳方案为外墙采用60 mm 厚EPS保温板、吊顶采用80 mm厚EPS保温板、窗户选择6+12A+6塑钢外窗,改造后典型农宅节能61.80％,冬季最冷日客厅日平均温度提升8.50 ℃.研究结果可为冀北严寒地区既有农宅节能改造提供参考.
In the cold area of northern Hebei Province,most of the existing farm houses have not taken thermal insulation measures,which leads to high heating energy consumption and poor indoor thermal environment.In order to reduce the heating energy consumption of the existing farm house and improve the indoor thermal environment,this paper takes a typical farm house in the cold region of northern Hebei as the research object,and simulates the heating energy consumption of the farm house based on DesignBuilder,and explores the influence of energy-saving retrofit of the farm house envelope structure on the heating energy consumption.Using the ratio of investment to income as the economic evaluation index,the paper analyzes and compares the single factor energy-saving transformation and the orthogonal experiment combination energy-saving transformation,and obtains the appropriate energy-saving transformation strategy.The results show that external wall insulation has a great influence on building heating energy consumption.The best comprehensive energy-saving transformation scheme is to use 60 mm thick EPS insulation board for external wall,80 mm EPS insulation board for ceiling and 6+12A+6 plastic steel external window.After the transformation,the typical farm house can save 61.80％energy.The average daily temperature of the living room on the coldest day in winter increased by 8.50 ℃.The research results can provide reference for energy saving retrofit of existing farm houses in the cold area of northern Hebei Province.
existing farm houseenclosure structureenergy-saving renovationinvestment income ratioorthogonal experiment
维普
万方数据
