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Abdizadeh S, Nasiri H, Ahmadnejad F. Evaluation of the Effects of Porch in Traditional Houses of Tabriz on the amount of Daylight Factor Changes (Case study: Behnam, Ghadaki, Ganjeizadeh houses). CIAUJ 2024; 9 (1) :69-80
URL: http://ciauj-tabriziau.ir/article-1-423-en.html

Daylight factor (DF) is recognized as an important element in architecture and a beneficial strategy in designing energy-efficient buildings. In the meantime,  porches one of the influential factors in the amount of daylight received, which can be useful in reducing energy consumption. Daylight has positive physical and psychological effect on users and is one of the main aspects of design; therefore, the present study was conducted with the aim of evaluating the effect of the porches in traditional houses of Tabriz on the  changes in the daylight factor.  In this regard, Qajar-era architecture was chosen due to its proximity to the present time, the structural characteristic of houses from this period, i.e., having a porch, and a larger statistical population. Thus, the houses of Behnam, Ghadki and Ganjeizadeh in Tabriz were selected as a sample population. In this study, information was collected through library research and field study. Subsequently, the daylight factor level in the spaces behind the porches was evaluated using energy simulation software. Based on the selected index, the performance of porches was examined in different orientations and seasons. The results showed that the influence of porches on daylight factor levels is greater in summer with a reduction of 60-30% compared to a reduction of 1-30% in winter. Considering the results, it is concluded that traditional houses with porches perform more optimally in terms of controlling the lighting conditions in the space than houses without them and the quality of lighting in the spaces behind the porch in these houses in different seasons of the year is much closer to the standard level.