Particle Sizing in Hot Air Streaming by the Laser Diffraction Method

Abstract

Particle sizing and characterization in hot air streaming were studied by using a particle sizer based on the Fraunhofer diffraction principle. The most important problem is a noise signal induced by the flickering phenomena of incident light through hot air. A calibration reticle was used for analyzing the noise signals, and a data kill method for compensation was presented. Alcohol fuels such as methanol, ethanol, etc, were injected in hot air streaming and their characteristic diameters were estimated by the presented method.