Energy performance assessment of double-skin façade with thermal mass
Energy performance assessment of double-skin façade with thermal mass
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DOI：
10.1016/j.enbuild.2010.03.020
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发表时间：
2010-09
影响因子：
6.7
通讯作者：
A. Fallahi;F. Haghighat;Hafia Elsadi
中科院分区：
文献类型：
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作者：
A. Fallahi;F. Haghighat;Hafia Elsadi
为了缓解温暖季节的过热问题，从而提高双表皮farade （DSF）系统的热性能和能源效率，本研究引入了一种创新的设计方法，包括将被动热质量技术与传统DSF的风道相结合。为了评估这种集成对系统能源效率的贡献，开发了一个能够确定传统DSF热性能的数值模型。数值模型由气流模型和热模型组成。本文简要介绍了模型的发展以及模型的验证。然后使用模型进行一系列参数研究，以研究热质量对集成系统能量性能的影响。模拟结果表明，与无热质量的传统DSF相比，机械通风的DSF在夏季节能21% ~ 26%，在冬季节能41% ~ 59%。结果还表明，全年自然通风的DSF的总节省可以忽略不计。
To mitigate the overheating problem in the warmer seasons, and thereby improve thermal performance and energy efficiency of the double-skin façade (DSF) system, this study introduced an innovative design approach involving the integration of passive thermal mass technique with the air channel of the conventional DSF. To assess the contribution of this integration to energy efficiency of the system, a numerical model was developed, capable of determining the thermal performance of the conventional DSF. The numerical model is composed of airflow and thermal models. This paper briefly describes the development of the models as well as the models’ verifications. Models were then used to carry out a series of parametric studies to investigate the effect of thermal mass on the energy performance of the integrated system. The simulation results revealed that mechanically ventilated DSF can save energy based on configuration from 21% to 26% in summer and from 41% to 59% in winter as compared to conventional DSFs without thermal mass. The results also showed the total saving for a naturally ventilated DSF is negligible year-round.