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http://dx.doi.org/10.3795/KSME-B.2017.41.4.221

Filterless Removal of PM2.5 Dusts by Condensational Growth  

Pyo, Juwon (School of Mechanical Engineering, Pusan Nat'l Univ.)
Lee, Donggeun (School of Mechanical Engineering, Pusan Nat'l Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.41, no.4, 2017 , pp. 221-228 More about this Journal
Abstract
We proposed a novel method to remove PM2.5 dusts without HEPA filters aiming at applications in kitchens or enclosed work spaces generating PM2.5 at high concentrations. Many workers are exposed to PM2.5 owing to lack of air purification because the high replacement costs of HEPA filters make their application impractical. A key idea is to use the condensational growth of nanoparticles. Once particles grow to the size of a few micrometers, it is much easier to remove them because of their increased inertia. We developed and tested a prototype consisting of an air saturator (equipped with water spray nozzles), a condenser in which humid air was cooled down to make the particles grow, and a multi-impactor assembly for collecting the grown particles.
Keywords
Condensational Growth; PM2.5 Ultrafine Dust; Filterless Air Purifier;
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