While KrCl lamps are expensive, I think this post overstates how unviable they are. I think an interested organisation could afford to install & run a bunch of these in an office (within the legal limits) basically right now, and see benefits that are worth the cost.
Well it depends how much UVC power you need. If a KrCl lamp with a bandpass filter is 2% efficient you can still run it at 500 Watts electrical and you have a 10-Watt source. 500 Watts electrical is totally feasible from standard electrical outlets (240 Volts @ 2 Amps), and electricity is cheap compared to the cost of lost productivity and the economic cost of death.
I would be interested to hear from some more qualified people on what power density you really need for it to work.
Well it depends how much UVC power you need. If a KrCl lamp with a bandpass filter is 2% efficient you can still run it at 500 Watts electrical and you have a 10-Watt source. 500 Watts electrical is totally feasible from standard electrical outlets (240 Volts @ 2 Amps), and electricity is cheap compared to the cost of lost productivity and the economic cost of death.
I would be interested to hear from some more qualified people on what power density you really need for it to work.