THE INFLUENCE OF BUILDING FACADES ON THE OUTDOOR THERMAL ENVIRONMENT OF RESIDENTIAL QUARTER

The outdoor thermal environment is becoming worse due to the urbanization. More and more skyscrapers are built, which means the greenbelt would be less and less. The area of building facades grows rapidly so that the influence of walls on the thermal environment is much more intense than any other period before. This paper discussed how different types of facades changed the outdoor thermal environment in the summer of Guangzhou by means of measurement and simulation. To compare the different influence between white mosaic tile wall and grey granitic plaster wall, some parameters were measured the whole day, which included the facade temperature, intensity of incident solar radiation and emitted IR radiation and the temperature of air near walls and the outdoor environment. The results showed that the white mosaic tiles wall had a stronger heating -up effect on the environment. The CFD simulation based on hypothesis building group models showed that effect level of building facades on the outdoor air temperature was influenced by building density and plot ratio. These achievements will be useful opinions for urban planning.