Author:
Gamal El-Deen Y,Fahmy M,Temraz T
Abstract
Abstract
For long periods last years, the majority of cities suffer from exceptionally hot- dry climate. However, the most urban patterns within these cities are unsuitable for these severe occurrences and raise the value of the Urban Heat Island (UHI). The goal of this study is to see how UHI mitigation options affect outdoor human thermal comfort in three different forms of frequent urban trees patterns in the world’s most populous city in Egypt, Aswan. The ENVI-met model was utilised to assess meteorological using simulation climate program (Ecotect Analysis), buildings and vegetation distribution, using Pupulus Alba. All measurements were taken in a pedestrian walkway at the microclimate case study (case 1. without trees, case 2. distribution trees each 8m total coverage 50%, case 3. distribution trees each 12m total coverage 21.5% were conducted to measure, relative humidity, mean radiant temperature, wind speed, air temperature and prediction mean vote as a key indicator for human thermal comfort. This study provided a better understanding of the role of Urban Heat Island UHI mitigation strategies on human thermal comfort in the outdoor spaces of Aswan’s residential neighborhoods. The simulation results revealed high thermal comfort and discomfort after setting 3 cases for trees pattern for the climate and the possible vegetation (trees patterns). This result indicate that an optimized percentage of urban trees pattern can mitigate (UHI) effect and clear the role that urban trees serve in modifying microclimates.
Reference45 articles.
1. Urban Physics: Effect of the micro-climate on comfort, health and energy demand;Moonen;Frontiers of Architectural Research. 1,2012
2. United Nations 68% of the World Population Projected to Live in Urban Areas by 2050;Desa,2018
3. Urban heat island: causes, effects and mitigation measures-a review;Nuruzzaman;International Journal of Environmental Monitoring and Analysis.,2015
4. The significance of physiological equivalent temperature (PET) in outdoor thermal comfort studies;Deb;International Journal of Engineering Science and Technology,2010
5. Analysis of urban ventilation potential using rule-based modeling;Luo;Comput. Environ. Urban Syst. 2017,2021