“10 breathing cycles in a minute”
Or Six seconds of irradiation per breath of 2 li.
Or .333 Li /S
As per Predicted Inactivation of Viruses of Relevance to Biodefense by Solar Radiation - PMC Table 2 the required radiation dose at 254nM for Coronoviridae is 2.4 - 3.9J/M^2 or a 390uW/Cm^2/S
We can provide UVC dose of
0.021X10000=210J/M^2
Substantially more than required.
The volume of air in our gadget:
Air in a cylinder of dia 2 cm X 25cm - Light tube volume of dia 1.6cm X 25cm
.315L-.0785=.2365L
or 29% lower than required volume o.333L/S. We can increase the dia of the outer cylinder by 3 mm to get the required volume. However even if the air flow reduced the exposure time by half, we would still be exposing the air to 110J/M^2, 28 times more than required.
Methinks this is fesabile.
I am thinking of a belt strapped gadget hanging on one side.
But looking at the numbers and the ability of these lamps to deliver a far higher dosage several form factors are feasible.