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The power of a dyson Air Purifier

17,385,182 views • 10 months ago •via X (Twitter)

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Unfortunately, "protective bubbles" are almost entirely a marketing myth. Where you place an air purifier in a room in relation to yourself has almost no effect on how much protection it grants you. Air is a fluid, and fluids mix constantly with the slightest movement. It's like trying to make a "cream only" bubble in your coffee while you're stirring. Only in a room, people are the spoon. This is easy to verify with even a cheap particle counter. Take a measurement with an air purifier across the room, take a measurement with it next to you- it will be almost identical. The measurement will remain almost identical until you are a few centimeters from the air purifier's output. People feel a breeze from a purifier blowing on their face, so they think they are protected, but with the exception of some very specialized units like the Air Fanta Wear, there is almost no localized effect- it's all CADR per room, not CADR per cm away from you. Here's a CFD model with an air purifier in various locations and the relation to particle count in the breathing box (inhalation zone) of a room occupant. In short, it doesn't matter if you have a lot of CADR close to the performer, just how many CADR in the room. Big air purifiers on stage are mostly for feels and vibes. The data just does not support it. It's too much air, mixing too quickly for a localized effect. A particle counter near the performer and in the audience will show almost the same number.

Nukit

13,427 views • 2 months ago