严寒地区主被动太阳能协同采暖室内舒适度研究

Research on indoor comfort of active and passive solar cooperative heatingin cold Tibetan region

我国藏区冬季严寒,采暖主要以煤炭和牛粪直燃为主,室内舒适度较差.为了利用藏区丰富的太阳能实现清洁采暖,以甘南州合作市一座170m^2附加被动式阳光间的典型单体建筑为研究对象,利用布置在屋顶的7组30支竖管式全玻璃真空管太阳能集热器阵列给室内低温地板和水暖炕供暖.参照《民用建筑室内热湿环境评价标准》(GB/T 50785-2012)和Fanger热舒适评价体系,在2018年3月20日至2018年5月6日期间试验研究了室内的热环境和热舒适度,并评价了室内舒适度.研究结果表明:测试期内,当环境温度在-10.9~15℃变化时,未采用其它能源辅助的情况下,主被动太阳能协同采暖室内温度48 d都处在14℃以上,最高达到22.3℃,仅有1 d室内温度最低降到13℃,48 d内室内风速和湿度较好,室内热环境符合国家Ⅰ级标准,主被动太阳能协同采暖完全可以实现严寒藏区清洁供暖.

China's Tibetan areas are very cold in winter,and heating is dominated by direct combustion of coal and cow dung.Indoor comfort is poor.In order to use the rich solar energy of the Tibetan region to achieve clean heating,the typical single building of a 170m^2 attached passive sunlight in Hezuo city,Gannan is taken for studiy and 7 sets of 30 vertical tube-type all-glass vacuum tube solar collectors arranged on the roof were used.The array heats indoor low-temperature floors and heating-water Kang.With reference to“Evaluation Criteria for Indoor Thermal Environment of Civil Buildings”(GB/T 50785-2012)and Fanger Thermal Comfort Evaluation System,the indoor thermal environment and thermal comfort were tested during the period from March 20,2018 to May 6,2018,and the indoor comfort was evaluated.Results of the study show that during the test period,when the ambient temperature changes from-10.9℃ to 15℃,without the use of other energy assistance,the indoor temperature of active and passive solar cooperative heating is more than 14℃ for 48 days except one day when the minimum indoor temperature dropped to 13℃,with a maximum of 22.3℃,and within 48 days of indoor wind speed and humidity is better,the active and passive solar cooperative heating can completely realize the clean heating in cold Tibetan regions.