@fae2535@longcovid thanks! Clearly Airinum haven’t invented anything. The question remains: would you trust such a device over a mask? I still don’t feel confident!
When I gave an unmasked 'friend' a lift in my car, I wore a mask and had the filter on high between the seats (my dog was also in the car and needed good air).
I wouldn't go to the dentist relying on just this small filter.
@sheislaurence@longcovid What I've learned about portable airpurifiers is that they do not clean enough air to make a notable difference. The problem is not filtration itself but how much air can be pushed through the filter at once. To protect from Covid, such a device needs to filter the air in the whole room at a sufficient rate which portable purifiers usually fail to achieve. This is what I have been told when I considered getting such a device some while ago.
@Krise_DIY@longcovid what Airinum did tell me is that the #ventilation rate or 'Clean Air Delivery Rate' (#CADR) was 8.7 m³/h. The research I attached in my original post mentions ">99.97% at 7.1 ventilation volumes", but I cannot find the unit. If it is indeed 7.1m³/h, then it sounds like the Hale #airpurifier is exceeding the ratio.
@sheislaurence@longcovid I just checked the stationary, medium-sized purifier I have at home which has a CADR of >140m³/h. In comparison, the 8.7 seem very low to me but I have to check the paper you attached in detail. In the end, the required CADR depends on your use case, i.e., on the size of the rooms that you plan to use the device in.
@Krise_DIY@longcovid yes, this one is a personal #airpurifier, that only works if you stand within a certain range. It sounds like you are talking of a purifier for an entire room (classroom type), which is a different beast, hence the differences in volume.
@sheislaurence@longcovid Right. But my initial comment referred to those personal air purifiers that you would carry close to you, potentially. The way that airflow works, they are not able to create a bubble of safe air around you within a larger room. At least, as I have understood it. I would be very happy if I am wrong about that.
@sheislaurence@longcovid Also, the study you mention describes a setup where they simulated air purifiers operating in hospital rooms. I don't think the findings are applicable to portable, near-range devices.
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