Air Purification Performance Analysis of Magnetic Fluid Filter with AC Non-Thermal Plasma Discharge
Abstract
:1. Introduction
2. Physical Transport Phenomena and the Principle of PM Collection in a Magnetic Fluid Filter with NTP Discharge
2.1. Physical Transport Phenomena Contribution to PM Collection
- (1)
- Migration velocity vg due to gravitational force (terminal settling velocity)
- (2)
- Migration velocity vc due to centrifugal force
- (3)
- Migration velocity vi due to inertial force
- (4)
- Migration velocity vB due to Brownian diffusion
- (5)
- Migration velocity ve due to electrostatic force
2.2. Principle of PM Collection in a Magnetic Fluid Filter with NTP Discharge
3. Experimental Setup and Method
4. Results and Discussion
4.1. PM Collection in a Magnetic Fluid Filter
4.2. Power Consumption of NTP Discharge in a Magnetic Fluid Filter
4.3. O3 Generation of a Magnetic Fluid Filter
5. Conclusions
- (1)
- The relationship between the minimum diameter of PM in the measurement range dp and the PM collection efficiency with NTP ηMFNTP for different numbers of lumps of magnetic fluid n are investigated. Under n = 6, ηMFNTP = 71, 90, 99, 100, and 100% for dp ≥ 0.3, 0.5, 1.0, 2.0, and 5.0 μm, respectively. These collection rates are sufficiently high for air purification. As dp increases, ηMFNTP also increases at all values of n. As n increases, ηMFNTP increases. The PM collection mechanism is a function of the particle migration velocity.
- (2)
- The power consumption of the magnetic fluid filter with NTP P and the generated O3 concentration CO3 are investigated for different numbers of lumps of the magnetic fluid n and the O3 generation efficiency ζO3 is calculated from these data. The results show that ζO3 increases proportionally with n. For 25 °C and 1 atm, the ζO3 values are 0.14, 0.39, 0.57, and 1.39 mg/Wh at n = 1, 2, 4, and 6, respectively.
- (3)
- Performance efficiency is improved in both PM collection and O3 generation with an increase in the number of lumps of magnetic fluid or with an increase in the number of spikes of the magnetic fluid with discharge. Namely, the hypothesis that an increase in spikes leads to improved collection efficiencies with energy conservation has been validated.
Author Contributions
Funding
Data Availability Statement
Conflicts of Interest
References
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Kuwahara, T.; Asaka, Y. Air Purification Performance Analysis of Magnetic Fluid Filter with AC Non-Thermal Plasma Discharge. Energies 2024, 17, 1865. https://doi.org/10.3390/en17081865
Kuwahara T, Asaka Y. Air Purification Performance Analysis of Magnetic Fluid Filter with AC Non-Thermal Plasma Discharge. Energies. 2024; 17(8):1865. https://doi.org/10.3390/en17081865
Chicago/Turabian StyleKuwahara, Takuya, and Yusuke Asaka. 2024. "Air Purification Performance Analysis of Magnetic Fluid Filter with AC Non-Thermal Plasma Discharge" Energies 17, no. 8: 1865. https://doi.org/10.3390/en17081865