The 15th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics (HEFAT2021), 26 - 28 July 2021, pp.875-878
Air cleaning devices (ACD) with many different
specifications are used indoors to improve air quality and remove
pollutants from the indoor environment. With the Covid 19
pandemic, the use of these devices has increased significantly.
Many people continue to smoke indoors while using these
devices. The performance of ACDs for cleaning cigarette smoke
and their effects on indoor air quality is not well known. In this
study, the cigarette smoke cleaning performance of four different
ACDs in a room where ambient conditions can be controlled was
experimentally investigated. While two of these devices work
with the ultra violet beam (UV-C) cleaning principle, the other
two clean the indoor using different air filters. CO2, VOC, CH2O,
PM10 and PM2.5 measurements were made during the
experiments to determine the concentration values change of
these pollutants over time. It has been observed that filtered
ACDs more effectively remove particulate matter from the
environment than devices operating with the UV-C principle.
Besides, it has been found that UV-C devices do not change the
VOC concentration in the environment. It has been also noticed
that different air cleaning technologies used in air purification
devices have other by products on the indoor air. Reported
measurement results are compared and discussed.