MULTICHANNEL-TYPE DIFFUSION CHARGER FOR THE REAL-TIME MEASUREMENT OF THE SIZE DISTRIBUTION OF SUBMICRON PARTICLES, AND METHOD FOR THE REAL-TIME MEASUREMENT OF THE SIZE DISTRIBUTION OF SUBMICRON PARTICLES USING SAME

摘要

The present invention relates to a multichannel-type diffusion charger for the real-time measurement of the size distribution of submicron particles, and to a method for the real-time measurement of the size distribution of submicron particles using same. The multichannel-type diffusion charger for the real-time measurement of the size distribution of submicron particles according to the present invention includes: a particle charger (10) for charging particles contained in aerosol air; a plurality of channels (20) for providing a passage for the air in the particle charger (10) such that the air is divided and flows through the passage; and a current measuring device electrically connected to outlet ends of each of the channels to detect a plurality of current values corresponding to the amount of discharge of particles passed through each of the channels. The multichannel-type diffusion charger of the present invention can be manufactured into a small size with a low cost while minimizing the loss or stagnancy of the amount of charged particles. The multichannel-type diffusion charger for the real-time measurement of the size distribution of submicron particles, and the method for the real-time measurement of the size distribution of submicron particles using same, according to the present invention, establish a plurality of simultaneous equations corresponding to the number of variables, and thus calculate and derive variable values in an accurate manner without the need for setting arbitrary values to a portion of the variables, in deriving a plurality of variable values by applying current value data to the algorithm consisting of variables for providing information on the particle size distribution, such as the total particle number concentration, the geometric mean diameter, and the geometric standard deviation.