Deploying UVC to disinfect large spaces might be infeasible, but would it be easier to have smaller UVC lamps inside ventilation ducts and let the air pass under them at a higher rate? You get a much closer lamp, much more airflow, and don’t have to expose anyone to UVC directly.
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.
Deploying UVC to disinfect large spaces might be infeasible, but would it be easier to have smaller UVC lamps inside ventilation ducts and let the air pass under them at a higher rate? You get a much closer lamp, much more airflow, and don’t have to expose anyone to UVC directly.
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.