Nukit

@NukitToBeSure • 8,585 subscribers

Nukit at https://t.co/62nBfO0NBA (Call us "Nukit" please, other names may cause difficulty🙇🏻‍♀️)

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irene🌻 It's actually enough of a problem that we make special mahjong table air purifiers😅

irene🌻 It's actually enough of a problem that we make special mahjong table air purifiers😅

11,889 просмотров

The very first batch of Nukit Lanterns off the line this month went to protect the workers themselves. We now have Far-UVC in all working and common areas. Nukit is the first company in the world to protect its workers first- so they can protect you, with safe, effective, 222nm Far-UVC light.

The very first batch of Nukit Lanterns off the line this month went to protect the workers themselves. We now have Far-UVC in all working and common areas. Nukit is the first company in the world to protect its workers first- so they can protect you, with safe, effective, 222nm Far-UVC light.

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Not only does current evidence suggest the downward ballistic-arc droplet infection model is wrong, but a large portion of exhaled bioaerosols don't just drift laterally; they actually rise on the thermal plume of warm exhaled air and body heat, then fall back into the breathing zone as they cool. This is one of the factors that extends the infectious range of bioaerosols more than intuition might indicate.

Not only does current evidence suggest the downward ballistic-arc droplet infection model is wrong, but a large portion of exhaled bioaerosols don't just drift laterally; they actually rise on the thermal plume of warm exhaled air and body heat, then fall back into the breathing zone as they cool. This is one of the factors that extends the infectious range of bioaerosols more than intuition might indicate.

199,991 просмотров • 6 месяцев назад

This is the reality of modeling aerosols all day🤢 It's just a lot nicer not to think about that, or be like..."nah all the bioaerosols kind of just die on their own in the few seconds between when they are exhaled by someone else and I inhale them..." Because otherwise?🤮

This is the reality of modeling aerosols all day🤢 It's just a lot nicer not to think about that, or be like..."nah all the bioaerosols kind of just die on their own in the few seconds between when they are exhaled by someone else and I inhale them..." Because otherwise?🤮

53,362 просмотров • 6 месяцев назад

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.

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.

13,427 просмотров • 4 месяцев назад

Bit of fun, decided to check mask straps on my tensile strength testing machine (as one does💅🏻). Single strap attachment point load limit: 3M VFlex 9105: 1,564g Zhou Liang's mask ZM9541: 2,421g Zhou Liang's mask claimed 40n (4kg) across the whole strap (both points) so they overshot by a nice margin. That's a ton of weight on a little bit of meltblown. Any strap detachment must be some really interesting lateral loading problem with the ultrasonic welds or something like that🤔 I'm sure they'll track it down.

Bit of fun, decided to check mask straps on my tensile strength testing machine (as one does💅🏻). Single strap attachment point load limit: 3M VFlex 9105: 1,564g Zhou Liang's mask ZM9541: 2,421g Zhou Liang's mask claimed 40n (4kg) across the whole strap (both points) so they overshot by a nice margin. That's a ton of weight on a little bit of meltblown. Any strap detachment must be some really interesting lateral loading problem with the ultrasonic welds or something like that🤔 I'm sure they'll track it down.

21,004 просмотров • 11 месяцев назад

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