Improvement of Outdoor Space Microclimate in Hot Arid Regions Using Solar Pavilions

Abstract

Outdoor spaces are important to sustainable cities as they accommodate different types of activities and contribute to the livability of the urban areas. The enjoyment of outdoor spaces requires a comfortable thermal environment, especially in hot arid regions. Recent studies have investigated the effects of buildings, trees, water, and landscape design on improving thermal comfort; however, only a few studies have investigated the impact of solar-scape elements. The objective of this study was to investigate the effect of solar pavilions on improving thermal comfort in a residential area in New Borg Al-Arab, Egypt, and to identify the optimum distribution method for increasing the usability and function of outdoor spaces during the summer. This study was undertaken on a summer’s day in the peak period using ENVI-met software. Five scenarios employing different solar pavilion distribution methods were applied and simulated in the case study area. Physiological equivalent temperature values were calculated for each scenario. The results demonstrated that the individual distribution of solar pavilions was the best at improving thermal comfort. A design methodology for urban designers is suggested to improve outdoor thermal comfort and satisfy users' demand for energy in existing and new communities.