摘要
对冬季夜间建筑物外围护结构得热进行理论分析，并对建筑物外围护结构进行逐时热负荷计算。结果表明在冬季夜间供暖空调标准工况下，夜间辐射使室外空气综合温度在传统计算方法上逐时下降了2-3℃，这使得没有考虑夜间辐射的建筑物热负荷要比实际所需负荷减少约8．4％。对于节能保温较好的墙体，夜间辐射所产生的热负荷要比保温效果差的墙体小，供暖空调系统在冬季夜间运行时有必要考虑这部分负荷。
In this paper, the heat gain from building exterior envelope in winter night was analyzed and its hourly heating load was calculated, it was presented that in such heating and air conditioning standard condition, night radiation made outdoor air synthetic temperature reduces 2 - 3℃ when it was compared with traditional calculating method. Therefore, the heating load without considering night radiation was smaller than the practical one of about 8.4%, in addition, this number was smaller when better heat-insulated wall was used. It could be concluded that it was necessary to consider such heating load during winter night.
出处
《建筑科学》
北大核心
2007年第4期95-97,106,共4页
Building Science
关键词
夜间辐射
逐时热负荷
室外综合空气温度
建筑节能
night radiation
hourly heating load
outdoor air synthetic temperature
building energy-saving
