Abstract
Human comfort, health, and physical performance are all impacted by the external thermal environment, especially in hot, arid places like Arba Minch, Ethiopia, which is located in the tropical belt. According to the outdoor thermal comfort assessment result, there is a clear difference in human thermal comfort sensation value in sunny versus shaded areas due to the primary contribution of solar radiation. To maintain outdoor thermal comfort on a nearby street Shadow envelope design for daytime is recommended as it reduces solar radiation and contributes to a more pleasant urban environment for pedestrians. The prevailing climate conditions and solar sun path have been considered and analyzed to construct and shape the shading envelope appropriately. By taking a typical plot size along the eight-cardinal orientation of streets, the envelope was constructed using Rhinoceros, a graphical programming interface Grasshopper, and an open-source weather analysis tool Ladybug. The research concludes that shading envelope-based urban design is recommended and establishing heights must be included in the Conventional zoning in cities that have a hot-humid climate like Arba Minch as it is a main contributing factor to the health of city pedestrians. E-W and N-S streets are exposed to the sun at critical 12:00 am and 1:00 pm local times all year, which is highly exposed to solar radiation. To shade those streets, recommended planting deciduous trees on the street sidewalks. Finally, a Solar Geometry Demonstration Heliodon is used to validate the final design.
Presenters
Nataliya SolomonLecturer, Architecture and Planning, Arba Minch Institute of Technology, Arba Minch University, Ethiopia
Details
Presentation Type
Paper Presentation in a Themed Session
Theme
KEYWORDS
Shade envelope, RayMan model, PMV index, PPD and EPW
