New device for air disinfection with a shielded UV radiation and ozone
Laen...
Kuupäev
2021
Kättesaadav alates
Autorid
Martinovs, A.
Mezule, L.
Revalds, R.
Pizica, V.
Denisova, V.
Skudra, A.
Kolcs, G.
Zaicevs, E.
Juhna, T.
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
Abstrakt
Indoor air disinfection has become particularly relevant recently because of the
Covid-19 pandemics. A shielded device for air and surface disinfection with UV radiation and
ozone has been developed. It contains 28 low intensity (11 W) UV lamps (254 nm) in a specially
designed three-dimensional grid to provide a large flow cross-sectional area and long path for the
air particles to be irradiated. The device can be used in medical institutions, veterinary clinics,
manufacturing plants, public premises, poultry, and livestock farms. It does not generate air-ions
and ozone concentrations do not exceed the allowed 8-hour average values. The large number of
UV lamps and powerful fans ensure air disinfection in large rooms in a relatively short time
(400 m3 h
-1
). Simultaneously, the floor surface under the appliance is disinfected. Disinfection
efficiency tests demonstrated 99.9999% reduction for Escherichia coli, Staphylococcus aureus
and Pseudomonas phage Φ6 aerosols within a single transfer through the system (10 seconds of
treatment). The housing of the device protects from direct UV radiation; therefore, people can be
in the room during the operation of the device.
Kirjeldus
Received: February 1st, 2021 ; Accepted: May 2nd, 2021 ; Published: May 7th, 2021
; Correspondence: andris.martinovs@rta.lv
Märksõnad
air ions, disinfection, ozone, prototype, UV radiation, articles