Abstract
This article reviews the advanced measurement methods for particle size distribution in gas-particle flow by use of anisokinetic sampling. These methods utilize the classification effect during anisokinetic sampling. When the sampling velocity is different from the main flow velocity, the measured particle concentration deviates from the concentration in the main flow. This sampling error is expressed as a function of velocity ratio (main flow velocity/sampling velocity), sampling probe diameter and the particle size. The classification effect and the procedure to measure particle size distribution are summarized in the present paper. This review also presents the application results of these methods to the particle size distribution measurements of dusts and fly ash generated in a pulverized coal combustion test furnace.
