摘要
针对西安地区典型公共建筑,采用Energy Plus软件对辐射供冷房间负荷特性进行模拟,研究了不同的射入室内的太阳辐射分配算法对辐射供冷房间负荷计算结果准确性的影响,对辐射时间序列法中太阳辐射分配算法准确性的影响因素进行了敏感性分析,探讨了该方法中的太阳辐射分配算法用于辐射供冷房间负荷计算的适宜性。研究结果表明辐射时间序列法中的太阳辐射分配算法对地板辐射供冷房间峰值冷负荷有过高估计倾向;在该算法下,地板辐射供冷房间冷负荷计算结果的准确性对于地板对太阳辐射的吸收率最为敏感,对于窗墙比比较敏感,对于外窗朝向不敏感。对于顶板辐射供冷房间,辐射时间序列法中的太阳辐射分配算法对负荷计算结果准确性的影响较小,可直接应用。
In order to explore the suitability of the solar radiation distribution algorithm used in the Radiant Time Series Method(RTSM)for cooling load calculation of radiant cooled rooms,the Energy Plus software was used to simulate the room load characteristics of a typical public building in Xi’an.The effects of different distribution algorithms for solar radiation entering the room on the accuracy of the calculation results of the radiant cooled room load were studied,and the sensitivity analysis of the factors affecting the accuracy of the solar radiation distribution algorithm in the RTSM was carried out.The research results show that the distribution algorithm of solar radiation entering the room in the RTSM is prone to overestimating the peak cooling load of radiant floor cooling room;under this distribution algorithm,the accuracy of the calculation results of the cooling load of radiant floor cooling room is most sensitive to the solar radiation absorption rate of the floor,more sensitive to the window-to-wall ratio,and insensitive to the orientation of external window.For radiant ceiling cooling room,the solar radiation distribution algorithm in the RTSM has little effect on the accuracy of cooling load calculation results and can be directly applied.
作者
隋学敏
董雷
陈浩
SUI Xuemin;DONG Lei;CHEN Hao(School of Civil Engineering,Chang’an University,Xi’an 710061,China)
出处
《建筑科学》
CSCD
北大核心
2021年第4期180-188,共9页
Building Science
基金
陕西省自然科学基金研究计划-面上项目“基于辐射时间序列法的内嵌管式围护结构供冷房间负荷计算方法研究”(2019JM-453)
陕西省住房城乡建设科技计划项目“内嵌管式围护结构间歇供冷建筑负荷特性及计算方法研究”(2015-K72)。
关键词
辐射供冷
负荷计算
辐射时间序列法
仿真模拟
太阳辐射分配算法
radiant cooling
load calculation
radiant time series method
simulation
solar radiation distribution algorithm
