UV systems have been around for ~100 years. They work great in some specific applications. Newer UV-C technology is a marginal improvement, but doesn’t significantly address the cost, design expertise, and maintenance challenges that have kept UV systems from widespread use. Air filters are generally better for most applications. I do expect we will see more UV-C systems in particular applications, but it is far from the one-technology-to-rule-them-all solution that the EA community seems to think it is. This follows a historic pattern of the EA community generally over-hyping singular technology solutions to major problems in other cause areas, probably because of the techno-optimist worldview that many EAs have.
Here’s a related comment from last year: https://forum.effectivealtruism.org/posts/nopFhTtoiyGX8Bs7G/uvc-air-purifier-design-and-testing-strategy?commentId=ZywtAzPB2Ci5PLfPC
UV systems have been around for ~100 years. They work great in some specific applications. Newer UV-C technology is a marginal improvement, but doesn’t significantly address the cost, design expertise, and maintenance challenges that have kept UV systems from widespread use. Air filters are generally better for most applications. I do expect we will see more UV-C systems in particular applications, but it is far from the one-technology-to-rule-them-all solution that the EA community seems to think it is. This follows a historic pattern of the EA community generally over-hyping singular technology solutions to major problems in other cause areas, probably because of the techno-optimist worldview that many EAs have.
See ASHRAE’s guidance on filtration and air cleaning technologies for more details and comparisons: https://www.ashrae.org/technical-resources/filtration-disinfection
Could you elaborate on what you consider to be the specific marginal improvements of newer UV-C technologies?
Possibly cheaper, and less ozone production.