Rapid urbanization has a significant impact on the rise in urban air temperature which consequently leads to outdoor thermal discomfort for pedestrians. The research on usage of façade materials to improve the outdoor conditions are very limited. Therefore, the purpose of this research is to analyses the impact of building façade materials on urban microclimate by computational simulations using ENVI-MET tool. ENVI-MET offers liberty to model and simulate urban environment with greenery, building materials, roads, pathways, etc. In this study, a cluster of office buildings located on the city campus of Northumbria University at Newcastle were selected which are 2-5 storied in height connected with network of asphalt roads and concrete pathways and greenery in between. The cell size of 2×2 m2 was chosen for modelling. This research focused on the impact on microclimate by variation of building materials under UK weather condition involving summer and winter seasons. The result data are compared for facade materials with variable reflectance, emittance and specific heat capacity for typical summer and winter days. Weather parameters such as temperature, radiation/cloud, precipitation, wind, and relative humidity were forced into each simulation to obtain the accurate results. It has been observed that the urban air temperature in the first cell near façade can be reduced up-to 2°C on a summer day by implementing the high reflective cool paint. Similarly, the temperature shows a rise of up to 0.6°C in winters with the application of phase change material in the facade, hence improving the outer thermal comfort.
|Number of pages||1|
|Publication status||Published - 4 Apr 2022|
|Event||IPGRC 2022: Resilience in Research and Practice - University of Salford, Salford, United Kingdom|
Duration: 4 Apr 2022 → 6 Apr 2022
|Period||4/04/22 → 6/04/22|