摘要
为了研究冬季环境因素对建筑吸放热情况的影响,提高农村能源利用率,利用理论分析和实验相结合的方法分析太阳能辐射强度、环境温度、环境风速3种室外环境因素对西北单体建筑吸放热特性的影响,并提出将建筑吸放热量作为指导量判断建筑的吸放热情况。分析结果显示,当风速<3m/s时,随着太阳能辐射强度的增加,建筑放热特性逐渐减弱,吸热特性逐渐增强;当风速>3m/s时,风速越大,建筑放热特性越明显,对建筑吸放热特性影响从高到低分别为环境风速、太阳能辐射强度、环境温度;当只有环境温度和风速时,风速对建筑瞬时吸放热影响高于环境温度的影响;由于建筑热惯性的存在,3种环境因素中环境温度对建筑瞬时吸放热特性影响最小。
For the purpose of studying the effect of winter environmental factors on absorbing/exothermal heat characteristic and improving energy utilization efficiency in village,solar power radiation intensity,environmental temperature and wind speed were analyzed by theoretic analysis and experiment to affect absorbing/exothermal heat characteristic on architectures of Xibei,proposing that absorbing/exothermal heat amount is taken as guidance to judge the architecture’s absorbing/exothermal heat conditions.The analyzed results showed that when winding speed is less than 3 m/s,with solar power radiation intensity increasing,building exothermal heat characteristic is weakening,absorbing characteristic is increasing,when wind speed is more than 3 m/s,with wind speed increasing,building’s exothermal heat characteristic is becoming more and more obvious,the factors affecting absorbing/exothermal heat from high to low are as follows, environmental wind speed,solar powder radiation intensity,environmental temperature,when there are only both temperature and winding speed,absorbing/exothermal heat,winding speed has greater effect than the temperature for instant absorbing/exothermal heat characteristic.Due to heat inertia of building,among three factors,environmental temperature has least effect on absorbing/exothermal heat characteristic.
作者
谢春欣
杨捷媛
Xie Chunxin;Yang Jieyuan(School of Energy and Power Engineering,Lanzhou University of Technology,Lanzhou 730050,China)
出处
《甘肃科学学报》
2018年第5期70-79,共10页
Journal of Gansu Sciences
基金
国家自然科学基金资助项目(51676094)
陇原青年创新团队扶持计划项目(09-0165)
关键词
吸放热特性
太阳能
环境因素
Absorbing/exothermal heat characteristic
Solar energy
Environmental factors