Explaining the effect of the physical factors of the atriumOn the thermal performance and ventilation of high buildings in the climate of Rasht city

Subject Areas : Architecture and urbanization

babak padasht ¹ , farzaneh asadi malekjahan ² , Seyedeh Mamak Salavatian ³

1 - Ph.D Candidate, Department of Architecture, Rasht Branch, Islamic Azad University, Rasht, Iran
2 - Assistant Professor, Department of Architecture, Rasht Branch, Islamic Azad university, Rasht, Iran
3 - Assistant Professor, Department of Architecture, Rasht Branch, Islamic Azad university, Rasht, Iran

Received: 2023-07-26 Accepted : 2023-11-25 Published : 2025-02-19

Keywords: Energy performance, atrium, Ventilation Performance, High Building, Climate of Rasht city,

Abstract :

Introduction: Atrium is one of the most important architectural elements affecting the energy performance and ventilation of the building. This research investigates the effect of the physical factors of the atrium on the thermal performance, lighting and ventilation of high buildings in the climate of Rasht city. Methodology: The main approach of the research method of this study is quantitative and uses the simulation method. The simulation reference building is a high building with ten floors and a square plan with an open interior design, with a rectangular atrium exactly in the center of the building, defined so that the center of the atrium is located on the center of the building. The indicators of energy performance and ventilation performance including cooling demand, heating demand, total energy consumption, indoor air temperature and the number of air changes throughout the building are considered as dependent variables, and the variables of land dimensions, building form, window-to-wall ratio (WWR) and internal plan are fixed as a control variable. Result and Discussion: The findings show that, in general, the change in the physical factors of the atrium directly affects the thermal performance, lighting and ventilation of high buildings in the climate of Rasht city. Also, the findings show that the variables of length, width, perimeter and area of the atrium in the reference model in the climate of Rasht city have a significant and direct relationship with the heating demand and ventilation volume and an inverse relationship with the lighting demand of the building. The results showed that the cooling demand constitutes the largest amount of energy consumption, i.e. about 74% of the total energy consumption. Also, the heating demand is about 17% of the total energy consumption on average. While lighting energy defines the lowest amount of energy consumption, on average 9% of the total energy consumption. Conclusion:According to the findings, it is concluded that the use of atriums in high buildings in Rasht city is recommended only in situations where there is an urgent need to increase the lighting in the heart of the building;. Also, based on the findings, it can be concluded that in an equal area, the use of a square atrium generally produces better results. Also, rectangular atriums with north-south orientation have a better response in terms of energy performance than other orientations in Rasht city.

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