On the efficiency of night ventilation techniques applied to residential buildings
On the efficiency of night ventilation techniques applied to residential buildings
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DOI：
10.1016/j.enbuild.2010.02.024
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发表时间：
2010-08
影响因子：
6.7
通讯作者：
M. Santamouris;A. Sfakianaki;K. Pavlou
中科院分区：
文献类型：
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作者：
M. Santamouris;A. Sfakianaki;K. Pavlou
气候变化和热岛效应，加上建筑物设计不当，大大增加了建筑物的冷负荷。夜间通风似乎是最有前途的被动冷却技术之一。许多重要的理论和实验研究已经完成，但现有的信息是在一个分段的方式。本文分析了214栋采用夜间通风技术的空调住宅的能耗数据。计算了夜间通风的比绝对能量贡献。研究了建筑物需冷量与夜间通风贡献率的关系。研究发现，在特定的边界条件下，建筑物的供冷需求越高，夜间通风的潜在贡献越大。空气流量的作用进行了研究。据发现，在夜间存储的能量的全球利用率增加作为空气流率的函数，并且能量贡献和空气流率之间的回归线的倾斜度随着所施加的空气流率而显著增加，尽管每单位空气流的能量贡献正在减少。整个分析有助于更好地理解和评估夜间冷却技术的预期能量贡献。
Climatic change and heat island effect in combination with the non-proper design of buildings have increased substantially the cooling load of buildings. Night ventilation appears to be one of the more promising passive cooling techniques. Many important theoretical and experimental studies have been performed however the existing information is presented in a segmented way. The present paper analyses energy data from two hundred fourteen air conditioned residential buildings using night ventilation techniques. The specific absolute energy contribution of night ventilation has been calculated. The relation of the cooling demand of the buildings with the specific contribution of night ventilation has been investigated. It is found that the higher the cooling demand of the building, the higher the potential contribution of night ventilation under specific boundary conditions. The role of air flow rate is investigated as well. It is found that the global utilisability of the energy stored during the night increases as a function of the air flow rate and the tilt of the regression line between the energy contribution and the air flow rate increases significantly with the air flow rate applied, although the energy contribution per unit of air flow is decreasing. The whole analysis contributes towards a better understanding and evaluation of the expected energy contribution of night cooling techniques.