Improving The Urban Heat Island (UHI) Phenomenon by Converting The Simulated Urban Space into a Linear Model

Document Type : Original Article


Department of Engineering, Construction Engineering and Management, Civil Engineering, Kharazmi University, Tehran, Iran.


The urban heat island (UHI) is one of the most important phenomena related to urbanization, which indicates an increase in temperature of urban areas compared to the surrounding rural environment. The main goal of this study is a process for urban designing in order to improve air quality (in terms of temperature). To develop the proposed process, three factors affecting the temperature of urban areas including the area of green space, the area of artificial lakes and the ratio of building height to street width (H/W) in a region of Tehran city were examined. Then, instead of performing multiple simulations, a process was developed to convert the simulation space into a mathematical model. Thus, by using Taguchi method (a method of experiment design), targeted scenarios were designed and by resulting temperature from Envi simulation software, the average values of ambient temperature were determined. Based on the obtained results, in the area investigated in this research, the optimal levels of factors, plants and artificial lake area ratio and H/W equal to 0.22, 0.4 and 0.5 respectively.