Volume 10, Issue 2 (2020)                   Naqshejahan 2020, 10(2): 109-119 | Back to browse issues page

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1- Department of Architecture, Semnan Branch, Islamic Azad University, Semnan, Iran
2- Department of Architecture, North Tehran Branch, Islamic Azad University, Tehran, Iran , m_mahmoodi@iau-tnb.ac.ir
3- Tourism Research Center (Southern Hillside of Central Alborz), Semnan Branch, Islamic Azad University, Semnan, Iran
Abstract:   (2637 Views)
Aims: After the attention of the global associations to optimal using of energy, exterior walls of the buildings became one of the most important parts of the designing process. The present study aims to investigate the effect of airflow type and also the optimum spacing between two walls in this façade in the warm and humid climate of Iran (Kish Island).
Methods: In order to achieve this goal, various configurations of double-skin facades have been investigated using computer simulations (Fluent software 19.2). Two types of air evacuation of airflow and external air layer were investigated. Each of these two flows was simulated with three different distances of 1000, 1500, and 2000mm. In the present study, “the simulation and modeling research method” has been used. In the software simulation and numerical analysis sections, the type of research is “quantitative” and the research method is “analytical”, and the results are obtained based on “induction”.
Findings: The results show that during the peak periods of heat and humidity, when the outside air is not in a comfort state, the type of air evacuation causes high temperature and humidity inside the offices, and makes trouble for the thermal comfort of the residents and users.
Conclusion: In warm days and months, it is necessary to use an external air layer. It was also found that in the case of using air evacuation, the optimum depth of air cavity is 2000mm and in the case of external air, curtain layer is 1000mm.
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Article Type: Original Research | Subject: Highperformance Architecture
Received: 2020/02/21 | Accepted: 2020/05/26 | Published: 2020/09/20

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