Experimental Research of Aerosol Distribution in the Floor Heating Room When Natural Ventilated

The present article used the testing method to study the aerosol particle number concentration distribution of particle size-interval between 0.3~10 μm in floor heating room when natural ventilated in Taiyuan city. Experimental results showed that: Natural ventilation led into fresh air, it also brings particles pollution especially the small particles; The produce of particle with diameter below 2.0 μm is more than that of particle with diameter above 2.0 μm in natural ventilation, and the most of it is particle size-interval between 0.5~1.0 μm; The concentration of particle size-interval 0.5~1.0 μm is highest, which is highest in the inlet and outlet frequencies; Particles below 1.0 μm account for about 90% of the indoor total number of particle, and then their number concentration is highest especially in the downwind at people´s breathing zone; The particle number concentration with size-interval between 2.0~10.0 μm in the upwind is larger than in the downwind in people´s breathing zone.