The Effect of Vegetation on Improving Microclimate for Public Buildings in Hot Arid Cities

Abstract

Recent research focuses on the study of thermal comfort in cities and buildings, but the study of the effect of vegetation planting on improving microclimate for public buildings in hot arid cities were not addressed in simulation method. Two main variables were studied in this research, thermal comfort and vegetation cover, and finding a relationship between them. The ENVI-MET program was used to study the change in results. The Baghdad Hotel was selected as a case study for public buildings in hot arid climate. The analysis was based on the results of several climatic factors, (air temperature, air movement, relative humidity, thermal comfort coefficient and PMV). The descriptive experimental method was used. Thermal comfort was studied in the hottest summer days in Iraq during the day 7/1/2021 during the 12 o'clock. After adding the vegetation cover, the results showed a decrease in the temperature almost to 2 Cº, and the relative humidity was increased by about 28%, and the thermal comfort coefficient was reduced PMV has been reduced to two degrees, and the speed of the hot wind has been reduced to 8 degrees.