| The condition of outdoor thermal environment has been one of those who the public concerned with today.Unfortunately, it was becoming worse with the development ot cities. More and more skyscrapers are built, which means the greenbelt would less and less. The area of building facades grows at the same time so the fluence from walls to the environment is much stronger than any other period before. According to this situation, this paper will pay attention to how different types of facades change the temperature of outdoor environment in the summer of Guangzhou. These are the main researchs this paper did:1.Judge the veracity of infrared thermograph worked in great angle.2.A 24h lasting observation was done for obtainning differences datas between walls in white mosaic tile and grey granitic plaster. The datas contain the facade temperature, intensity of solar radiation and IR radiation and the air temperature near walls, the air temperature of environment. The observation shows that the building facades in white mosaic tiles have a stronger warming effect to the enviroment.3. Abase on the data we got form step 2, an analysis was done to figure out the deep reasons of these variations.4. Simulations for idealized building models air temperature variation had been done with Fluent. And some useful messages were picked up. Through these messages, the collections between air temperature and building facades under different building densities ,plot ratio and combinations of architectures were found.Above all, this paper made a deep analysis on the influnce of building facades to the outdoor air temperature'variations by both autoptical experiment and idealized simulations. These achievements will be useful opinions for the urban planning.
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