Abstract
This paper describes an experimental study on a removal method of aerosol particles in air by condensing the preliminarily heated and humidified air. In the experiment, air including aerosol particles is circulated by a fan in a closed clean room system which consists of a closed vessel, a humidifier, two condensers and an after-heater, and the number concentration of aerosol particles at the inlet of the closed vessel and the relative humidity and temperature in the system are measured for several conditions of humidification and condensation. It is clarified that the removal rate of aerosol particles in air increases when the mass flow rate of the condensate increases by means of enlarging the temperature difference between the heating water in the humidifier and the cooling water in the condensers. It is also shown that this method is more effective when the temperature level in the humidifier is risen. The aerosol particle removal mechanism of this method may be related to the generation of mist using aerosol particles as nuclei, the inertia trapping, the suction effect of condensation and so on.
