They already have UVC disinfection in ventilation systems—but you need to circulate a ton of air for it to be really effective, so one of the key benefits of Far-UVC—not needing to change existing buildings or install expensive new systems—is lost.
Also, if I were going to put a UV lamp in an air duct, I wouldn’t make it 222nm. IIRC other wavelengths (e.g. 254nm) are more effectively germicidal and are mainly bottlenecked by safety issues, which don’t apply in this context.
I hope this does not bump the thread up but, 254? Sounds perfect for AlGaN. Surely someone has a need for a ruggedized, effective, but not too eye/skin-safe UVC light source.
They already have UVC disinfection in ventilation systems—but you need to circulate a ton of air for it to be really effective, so one of the key benefits of Far-UVC—not needing to change existing buildings or install expensive new systems—is lost.
Also, if I were going to put a UV lamp in an air duct, I wouldn’t make it 222nm. IIRC other wavelengths (e.g. 254nm) are more effectively germicidal and are mainly bottlenecked by safety issues, which don’t apply in this context.
I hope this does not bump the thread up but, 254? Sounds perfect for AlGaN. Surely someone has a need for a ruggedized, effective, but not too eye/skin-safe UVC light source.
But we weren’t talking about 254, we were talking about 222, so that it could / should be skin-safe, at least.