Air Purification Performance Analysis of Magnetic Fluid Filter with AC Non-Thermal Plasma Discharge

Takuya Kuwahara () and Yusuke Asaka
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Takuya Kuwahara: Department of Mechanical Engineering, Nippon Institute of Technology, Saitama 3458501, Japan
Yusuke Asaka: Department of Mechanical and Systems Engineering, Graduate School of Nippon Institute of Technology, Saitama 3458501, Japan

Energies, 2024, vol. 17, issue 8, 1-18

Abstract: Air pollution caused by particulate matter (PM) is a worldwide concern. PM is particularly problematic from fossil-fuel-based energy conversion devices. For PM collection, a low-pressure loss method is ideal. Although PM collection via electrostatic force is an effective method with low pressure loss for PM with a wide range of diameters, it is difficult to apply to low-resistive PM, such as diesel particulates, owing to re-entrainment on the collection electrode. A magnetic fluid filter with an AC non-thermal plasma discharge solves the problem of re-entrainment. Based on our previous study, we hypothesized that an increase in the number of magnetic fluid spikes leads to an improvement in collection efficiencies with energy conservation. In this study, experiments are performed to verify this hypothesis. By improving our previous experimental methodology, the experiments include not only collection efficiency but also pressure loss, power consumption, and ozone generation efficiency. PM collection efficiencies using diesel fine particles and the ozone generation efficiencies required for air purification are investigated under different discharge conditions. The results revealed that the PM collection and ozone generation efficiencies increase proportionally with the number of spikes of the magnetic fluid with discharge, as hypothesized. The resulting PM collection and ozone generation efficiencies are sufficiently high for air purification.

Keywords: diesel particulate; filter; magnetic fluid; non-thermal plasma (NTP); particulate matter (PM); ozone (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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