4 ms·

Is there any reason why they can't just be installed inside air purifiers/ventilation? Especially since you could probably get more mileage out of the same amo

Is there any reason why they can't just be installed inside air purifiers/ventilation? Especially since you could probably get more mileage out of the same amount of light energy by forcing the air through a narrower passage, since only airborne particles are actually going to absorb any energy anyway, and air is mostly just empty air.

rob74 1y ago
That solution is actually suggested in the article. However, that still leaves the cost issue mentioned by GP, and until that is solved, this will remain something for specialized applications (operating rooms) and maybe hypochondriac millionaires...
- harddrivereque 1y ago
  ...and maybe diy germaphobes.. just like positive air pressure ventilation systems. In fact, you could combine
- DennisP 1y ago
  From a quick search, they are not millionaire-level expensive. Here for example is a 20W 222nm lamp that costs $436, with a lifetime of several thousand hours. https://uv-can.com/products/gerani-far-uv-light?srsltid=AfmBOopIMPnV3Rw_38jgiM91YU4cFDgJkmezRYqusgWfiIgs88HWu8jv https://uv-can.com/products/gerani-far-uv-light?srsltid=AfmB...
  - wkat4242 1y ago
    Several thousand hours is not a lot. A year is already 8760 hours.
    - DennisP 1y ago
      Sure, I'm not saying it's cheap. I'm just saying there are lots of software developers and whatnot who could keep themselves in UV air filters if they really wanted to.
BobaFloutist 1y ago
The risk is that they generate ozone, and it's not clear how serious the risks of constant exposure to ozone are.