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In this work, the effect of electrohydrodynamic (EHD) secondary flow on the wire-plate type electrostatic precipitator partial collection efficiencies for submicron and ultrafine dust particles in the range from 0.01 μm to 10 μm have been calculated based on the cross-sectional averaged values of numerically obtained ion density, electric field and gas velocity and coupled together with particle surface...
In this paper, results of 3-dimensional Particle Image Velocimetry (3D PIV) measurements of the flow velocity fields in a relatively wide wire-plate type ESP are presented. The ESP used in this work was an acrylic parallelepiped (10 cm × 20 cm × 100 cm) with a wire discharge electrode and two plate collecting electrodes. Air flow seeded with a cigarette smoke was blown along the ESP duct with an average...
Flow management by different design of gas distribution internals are in general required for several local sections within ElectroStatic Pricipitators (ESP’s) and Fabric Filters (FF’s). Flow management in filter equipment are important for both new and retrofit equipment due to performance e.g. flow uniformity, operating costs e.g. pressure loss etc. Currently, the traditional approach of cut-and-try...
This paper clearly discloses the possibilities, which the numeric flow simulation offers in case of modelling the two-phase flow in electrostatic precipitators and fabric filters with view to design new and retrofitting of old plants today. Contrary to physical flow models the CFD simulation is capable to consider high dust loads and the distribution of dust in the gas flow. This is an advantage which...
The specific gas flow influenced by the electrical field in the electrostatic precipitator (ESP) is called electrohydrodynamic (EHD) flow. The hybrid particulate collector (HPC) is a hybrid of the ESP and the baghouse in a unique approach combining the best features of both. The bags are placed between two perforated collection plates. The HPC is a very compact and high efficiency system. In this...
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