Abstract
In 2020, all the world has been confronted with COVID-19. Bringing people together in buildings is proving to be a risk factor that we have to deal with. Although the greatest attention is paid to the SARS-CoV-2 virus, there are a number of other pathogens (viruses, bacteria, fungi, etc.) that can be transmitted through the air. These pathogens are sensitive to UV-C radiation. UV-C fluorescent lamps have been developed with technical parameters that are adapted to HVAC operating conditions. By using germicidal sources to disinfect the transported air, more than 90% of the SARS-CoV-2 virus, more than 97% of Influenza A virus, and 100% of Legionella pneumophila can be inactivated. The use of UV-C emitters for air disinfection allows the use of circulation and recuperation. Total balance of energy and CO2 emissions by variants and energies used, including humidification were performed for Slovak conditions. The operation of germicidal sources during the heating period in selected cities in our example would represent only 0.45% of the difference in heat demand and 0.42% of the difference in energy demand between operation according to recommendations and operation with germicidal sources. It is therefore an effective means of ensuring health safety and energy efficiency for the future.
Highlights
After initial hesitation, the World Health Organization (WHO) confirmed that the SARS-CoV-2 virus, which causes disease COVID-19, is transmitted from humans to humans
By additional installation of germicidal sources in the ventilation ducts, the place of air disinfection can be brought closer to the place of its supply to the supplied interiors and decentralized. This will reduce the risk of reactivation of pathogens during air transport after central disinfection, simplify the design of UV-C sources and increase operational safety
By using germicidal sources to disinfect the transported air, more than 90% of the SARS-CoV-2 virus produced by humans in internal environment can be inactivated
Summary
The World Health Organization (WHO) confirmed that the SARS-CoV-2 virus, which causes disease COVID-19, is transmitted from humans to humans. According to the information given in [2,3,4,5], if these droplets are large (100 μm), they settle on nearby surfaces within a few seconds. If they are smaller, they float in the air for a few minutes (10 μm) to several days (0.5 μm). They float in the air for a few minutes (10 μm) to several days (0.5 μm) Both surfaces and indoor air can become a source of SARS-CoV-2 virus infection. The virus can infect people who have not been in direct contact with the primary source of infection at all (a person with COVID-19)
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