Experimental Research of Aerosol Distribution in the Floor Heating Room without Ventilation

The present article used the testing method to study the aerosol particle number concentration distribution of particle size-interval between 0.3~10μm in floor heating room under no ventilation in Taiyuan city. Experimental results showed that: Indoor air circulation formed by natural convection is the main influence that determines the indoor aerosol particle distribution; the rough cement wall and roof disperse particles above 0.5μm and absorb particles below 0.5μm; The particle number concentration increases with the height increases except particle size-interval between 0.3~0.5μm, and the bigger particle size is, the larger rate of increase is; The particle number concentration with particle size-interval between 0.5~1.0μm is highest; The aerosol particles are deposited on the lower temperature surface due to thermophoresis; the smaller particle diameter is, the better uniformity is.