Abstract
Today Urban Cities faces energy and environmental challenges due to increased population, higher urbanization. The building sector has a big responsibility as it acquires high consumption rates in global energy and environmental scenarios. It is thought that the built environment in Egypt is responsible for 26% of the total overall national energy consumption, 62% of the total electricity consumption and around 70% of resultant CO2 emissions. The increased use of electrical appliances causes Urban Heat Island effect (UHI), which affect major urban centres. Adding green elements to any urban area is proved to be an effective strategy with numerous benefits to enhance the city's ecosystem, also mitigate the urban heat island measures. In this research Green roofs/walls can regulate outdoor air temperature by 10°C and improve outdoor thermal comfort by 2 Predicted Mean Value (PMV) values. The modelling of green strategy models can take into consideration design developments in areas with hot and dry climatic zones. The properties of green walls can directly affect the results of thermal comfort as leafs absorbs, reflects and transmits solar radiation, and increases the evapotranspiration.
Highlights
The built environment is the largest part of the physical and economic human-made capital [1], where the construction sector itself constitutes a major part of the gross national product (GNP) [2] and accounts for 40% of the world's resource and energy use [3]
Air temperature reduction from installing extensive green wall with thickness 10 cm was better than the intensive green wall with 30 cm thickness
This is due to implementing green walls around buildings; which enhances the outdoor climate, reduces air temperature and provide a better condition for pedestrian in arid climates
Summary
The built environment is the largest part of the physical and economic human-made capital [1], where the construction sector itself constitutes a major part of the gross national product (GNP) [2] and accounts for 40% of the world's resource and energy use [3]. Adding green elements to any urban area is proved to be an effective strategy with numerous benefits to enhance the city's ecosystem, mitigate the urban heat island measures. Since walls represent a high portion of the exposed urbanized area, green walls have gained widespread attention for their accountable impact on reducing energy consumption, for their impact on modifying urban climate. It's proved that whenever vegetation, are installed in high- or medium-rise buildings, there is a direct impact on energy use and urban heat island mitigation potential [10,11,12]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
