PROJECT TITLE :

Basic Study of Indoor Air Quality Improvement by Atmospheric Plasma

ABSTRACT:

Indoor air quality was improved by controlling particulate matter (PM) consisting of parts such as house mud and bacteria, using an atmospheric pressure plasma. 2 types of electrode, that generate corona discharges, were placed inside a reactor and energized to come up with a nonthermal plasma, i.e., a disc-sort reactor and a needle-sort reactor. A plasma will decompose harmful substances by numerous active species like reactive radicals (e.g., N*, O*, and OH*) and ions, and a strong electric field. The particle collection rate relied on the discharge voltage, range of mesh filters, flow rate, and reactor characteristics. The dirt-collecting rate within the case of the disc-sort reactor was 95percent and in the case of the needle-sort reactor was ninety eightpercent. Formaldehyde removal was also performed to verify the improved performance of the nonthermal plasma and reduction of formaldehyde to below the permitted value of 0.08 ppm.