Development of filter-free particle filtration unit utilizing condensational growth: With special emphasis on high-concentration of ultrafine particles
We propose a new concept for removing ultrafine particles without HEPA filter. Rapid condensation growth and subsequent impaction of ultrafine particles are a key idea. We developed a prototype of filter-free particle filtration units for ultrafine particle control. The system is applicable for any types of ultrafine particles and possibly for PM2.5.