不同气候分区超高层建筑空调负荷高度修正系数的研究
Height correction factor for air conditioning load of super high-rise buildings in different climatic zones
摘要：
超高层建筑的高层风速和温降都会影响空调负荷，其影响程度与建筑所处气候分区有关。选取分属5个气候分区的哈尔滨、沈阳、北京、上海、广州，研究了因高层风速和温降的影响对外墙、屋顶和天窗的空调夏季冷负荷和冬季热负荷的高度修正系数。结果表明，高层风速对夏季冷负荷的影响很小，因高层风速和温降综合作用减小的冷负荷可考虑作为空调冷负荷的安全余量，在计算中不予考虑；冬季热负荷受高层风速和温降的影响较大，南方地区的影响大于北方，哈尔滨、沈阳、北京、上海、广州500 m高建筑的外墙高度修正系数分别为8%，9%，12%，15%，22%。
Abstract：
The wind velocity increase and temperature decrease affect the air conditioning load of super high-rise buildings, and the influence degree depends on the climatic zone where the building is located. Studies the height correction factors of summer cooling load and winter heating load through the exterior wall, roof and skylight in Harbin, Shenyang, Beijing, Shanghai and Guangzhou, which are selected from five climatic zones. The results show that the summer cooling load is little affected by wind velocity increase, and the cooling load decrease due to wind velocity increase and temperature decrease might be considered as the safety margin of summer cooling load, so the height correction factor of summer cooling load could be ignored in the calculation. The winter heating load is greatly affected by wind velocity increase, especially by temperature decrease, and the height correction factor of southern region is larger than that of northern region. The height correction factors for the exterior wall of tall building with the height of 500 m in Harbin, Shenyang, Beijing, Shanghai and Guangzhou are respectively 8%, 9%, 12%, 15% and 22%.
Keywords:superhigh-risebuilding,airconditioningload,heightcorrectionfactor,climaticzone,windvelocity,temperaturedecrease