Analysis of Fine Dust Removal Time Using Circular Hole Electrodes of Various Sizes by Corona Discharge

Do-Hyun Kim, Min-Soo Kim, Muhammad Adil Khan and Hee-Je Kim
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Do-Hyun Kim: School of Electrical Engineering, Pusan National University, Busan 46241, Korea
Min-Soo Kim: School of Electrical Engineering, Pusan National University, Busan 46241, Korea
Muhammad Adil Khan: School of Electrical Engineering, Pusan National University, Busan 46241, Korea
Hee-Je Kim: School of Electrical Engineering, Pusan National University, Busan 46241, Korea

Energies, 2018, vol. 11, issue 8, 1-15

Abstract: Corona discharge technology is used widely for air purification in laboratory experiments and industry. On the other hand, corona discharge technology has the disadvantage of requiring large-sized electrodes. Therefore, research is needed to reduce the size of the electrodes. In this study, circular hole aluminum electrodes and an air purifier system were designed to reduce the size of the electrodes. Several sets of power conversions were performed to generate a corona discharge. The system consisted of a half bridge inverter, step-up transformer, and Cockcroft Walton circuit. The range of input and output voltages was 30–70 V and 20–25 kV, respectively. A corona discharge was generated by the output voltage. The system could remove smoke in less time with a combination of 13 kHz and an electrode with a hole diameter of 0.2 cm than with the other combinations. The electrode hole diameter affected the removal time of species such as hydrogen carbon hydrogen oxygen (HCHO, formaldehyde), total volatile organic compounds (TVOC), and fine dust, which was confirmed by laboratory experiments. Mathematical derivation and experiments were carried out to prove the validity of the approach; the Clean Air Delivery Rate (CADR) index was 480 μm/m 3 .

Keywords: air purification; corona discharge; circular hole aluminum electrodes; CADR index (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: 2018
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