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비상발전기용 PM/NO<sub>X</sub> 저감장치의 유동특성 연구
방효원,박기영,이성욱,Bang, Hyo-Won,Park, Gi-Young,Lee, Seong-Wock 한국분무공학회 2021 한국액체미립화학회지 Vol.26 No.4
Emergency generators normally use diesel engines. The generators need to conduct weekly no-load operation inspections to ensure stable performance at emergency situations. In particular, the generators with large diesel engines mainly use rectangle type filter substrates. In order to minimize hazardous emissions generated by generators, optimizing the reduction efficiency through CFD analysis of flow characteristics of PM/NO<sub>X</sub> reduction system is important. In this study, we analyzed internal flow by CFD, which is difficult to confirm by experimental method. The main factors in our numerical study are the changes of flow uniformity and back pressure. Therefore, changes in flow characteristics were studied according to urea injector locations, selective catalyst reduction (SCR) diffuser angle, and filter porosity.