Reduction of aerosol particulates through the use of an electrostatic precipitator with guidance-plate-covered collecting electrodes

The key energy performance of novel electrostatic precipitators

“…Because gaps can accommodate a large amount of particles, GPC-ESPs are highly applicable to dusty environments, such as tunnels, railroads, and power plants. The experimental data showed that the collection efficiency of a GPC-ESP is up to 20% higher than that of a traditional ESP (no particle-trapping mechanisms on the collecting electrode and no pre-and/or post-filters) [3].…”

“…Disturbances such as passing airflow or vibrations cause the collected particles to return to the environment [19][20][21], thus lowering the collection efficiency. To minimize the effects of particles re-entrainment, our research group has been actively working on the development of ESPs for years and has previously presented two novel particle-trapping mechanisms for ESPs, which are foam-covered ESP (FC-ESP) [1,2] and guidance-platecovered ESP (GPC-ESP) [3].…”

“…At a given volumetric airflow rate, the KEPs of GPC-ESPs can be rated by measuring collection efficiencies [3] and system power consumption. Fig.…”

“…Nevertheless, the implementation of pre-and/or post-filters impedes airflow and increases the pressure drop of the system. Our research group previously presented two novel particle-trapping mechanisms that promoted the collection efficiencies of ESPs despite the absence of fibrous filters [1][2][3]. For a foam-covered ESP (FC-ESP), the collecting electrode is covered by porous foam.…”

Utilization of electrostatic precipitators for healthy indoor environments

“…Single stage electrostatic precipitators charge and collect particles at the same time, and two-stage electrostatic precipitators charge and collect particles at different sections as shown in Fig.2. Particles are charged in the first stage when they move along the charger and they are collected in the second stage where there are both collecting and repelling electrodes [21]. The electric field strength between repelling and collecting electrodes is much stronger than that between corona wires and the collecting electrodes of single stage electrostatic precipitators due to a larger surface area of the repelling electrodes [22].…”