Abstract
Abstract A dust chamber was specially designed to study the effectiveness of two types of spray systems under different operating conditions. The first, a single-phase spray system (SPSS), uses water as the flowing fluid. The second, a two-phase spray system (TPSS), uses both water and air as the flowing fluids. A factorial experiment was designed in which, in addition to the spray systems, coal dust type, coal dust size, water and air pressures, and airflow in the chamber were the other factors. The major objective of this study was to study the performance of SPSS and TPSS at higher air and water pressures, specifically from 50 to 100 psi. The experimental results were analyzed using analysis of variance (ANOVA) techniques. According to this study, dust collection efficiency is higher with TPSS than with SPSS for all coal dust sizes and dust types. In both cases, however, collection efficiency decreases with a decrease in coal particle size. Collection efficiency is independent of coal dust type for lar...
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