  A conceptual design of a novel UVC-LED air-cleaner is presented as part of an
international educational-research study. The main components are a dust-filter
assembly, a UVC chamber and a fan. The dust-filter aims to suppress dust
accumulation that will hamper the UVC chamber operation. The innovation is in
the UVC chamber that includes a novel turbulence-generating grid to enhance air
mixing in the chamber and a novel LEDs layout to achieve sufficient kill of the
SARS-CoV-2 virus and TB bacterium aerosols with a reasonable power consumption.
Both diseases have hit hard low to medium income countries and this study is
part of an effort to offer non-pharmaceutical solutions to mitigate the
air-transmission of such diseases. Low to high fidelity methods of
computational fluid dynamics and UVC ray method are used to show that the
design can provide a kill above 97% for Covid and TB, and above 92% for
influenza-A. This is at a flow rate of 100 l/s, power consumption of less than
300W and a device size that is both portable and may also fit into ventilation
ducts. Research and educational methodologies are discussed, along with
analysis of the inexpensive dust-filter performance and the irradiation and
flow fields.
