冀东沿海穿堂式农宅冬季室内热湿环境实测及节能改造分析

Analysis of Winter Indoor Thermal Environment Measurement and Renovation of Eastern Hebei Coastal Through-hall Rural House

针对冀东沿海农宅室内热湿环境及节能改造问题,对当地穿堂式典型农宅和新型农宅进行采暖期室内热湿环境实测,分析室内温度、相对湿度及风速的变化及分布特点,分析建筑热工、采暖系统等因素对当地室内热湿环境及建筑热损失的影响,对当地典型农宅提出节能改造方案并进行了模拟分析。研究结果表明,当地农宅存在围护结构传热系数高于当地农宅传热系数限值、热桥效应明显、散热末端布置不合理等现象,增设南向阳光间可以使主卧室夜间最低温度提高2~3℃、温度日较差降低1.5℃,缓解当地典型三开间穿堂式农宅采暖期热损失大等问题。

In order to analyze the influence of building thermal performance and heating system on indoor thermal environment of coastal rural house in the eastern of Hebei province,the characterizations of indoor thermal environment of typical and original through-hall rural house were measured during the heating period,such as the trends and distribution of indoor temperature,relative humidity and wind speed.In order to reduce building energy consumption,a renovation plan for the typical house was proposed and its energy-saving effect was simulated.The research results reveals that heat transfer coefficient of building envelop is over its limits in GB 50824-2013,the effect of thermal bridges is obvious,and the radiators were unreasonably arranged.With an attached sunspace,the nighttime minimum temperature of bedroom increases by 2~3℃,and the diurnal range reduces by 1.5℃.The plan can decrease the heat loss of the through-hall three-bay rural house during the heating period.