Anyone know how Xiaomi air purifiers compare to these?
Dyson air purifier outperformed by cheap DIY box fan filter in Marketplace test
551–560 of 602 posts
Re: Dyson air purifier outperformed by cheap DIY box fan filter in Marketplace test
#552Earlier quoted context omitted.
They'd probably do it no more than ten times.
I just feel bad for all the kids who won't feel the joy of talking into a fan and making a funny voice :(
Instead, they get apps that can change their voice and face in thousands of ways.
I mean I get the "born in the wrong generation" vibe, but at the same time it's easy to get blinkered and not realize what came instead. In a LOT of ways, they (and we) were born in the RIGHT generation.
Re: Dyson air purifier outperformed by cheap DIY box fan filter in Marketplace test
#553Earlier quoted context omitted.
I just feel bad for all the kids who won't feel the joy of talking into a fan and making a funny voice :(
too many things have been lost or gimped. Chemistry sets, m-80s, model rockets, playgrounds, coaster brakes, whatever kids did before "play dates" and anything intricate with small parts.
Side note: "nerfed" is preferable to "gimped".
One uses the name of a toy in a derogatory manner, the other is a straight-up derogatory term for a group of people.
Re: Dyson air purifier outperformed by cheap DIY box fan filter in Marketplace test
#554Earlier quoted context omitted.
I just feel bad for all the kids who won't feel the joy of talking into a fan and making a funny voice :(
Instead, they get apps that can change their voice and face in thousands of ways. I mean I get the "born in the wrong generation" vibe, but at the same time it's easy to get blinkered and not realize what came instead. In a LOT of ways, they (and we) were born in the RIGHT generation.
Part of the fun in the fan is discovering the accidental feature. You play with it and transform what it can do, unconstrained (except by natural laws).
With an app, you’re using a tool for its intended purpose. There’s little joy in discoverability because you’re following the rules the developer set.
That’s why the fan can be more fun; it’s not generational. The fun is in exploring a novel feature in something you though you thoroughly understood.
When the novelty is over with the app, you delete it (was the hour of fun worth getting your data mined?) and return to the boredom (find the next app). With the fan, you simply stop and it continues to be useful. Without you taking deliberate action, everything returns to the way it was. Except for your mind, which metaphorically expanded and wants to see what else can be used in creative ways.
Re: Dyson air purifier outperformed by cheap DIY box fan filter in Marketplace test
#555Earlier quoted context omitted.
> Any kind of smoke hangs around in a room for many hours well past when you can smell it. But once the sensors indicate that the PM2.5 is gone, everything is fine, right?
If that's sarcasm, you aren't providing enough context for me to pick up what you are putting down. If not, then the honest answer is "I don't know for sure, I'm still researching it." From what I can tell, PM2.5 isn't the end-all be-all metric and sensors can give false readings. That's why I'm building multiple devices with different types of sensors and monitoring multiple metrics. PM10 and PM1.0 are also concerns…
Not sarcasm. Thank you for answering!
Re: Dyson air purifier outperformed by cheap DIY box fan filter in Marketplace test
#556Earlier quoted context omitted.
If that's sarcasm, you aren't providing enough context for me to pick up what you are putting down. If not, then the honest answer is "I don't know for sure, I'm still researching it." From what I can tell, PM2.5 isn't the end-all be-all metric and sensors can give false readings. That's why I'm building multiple devices with different types of sensors and monitoring multiple metrics. PM10 and PM1.0 are also concerns…
Not sarcasm. Thank you for answering!
:)
Re: Dyson air purifier outperformed by cheap DIY box fan filter in Marketplace test
#557The best part from an engineer at Dyson (his last name is Hill):
"Dyson has developed its own testing methodology, the POLAR test method, which, unlike the CADR, Hill said, "measures the intelligence of the purifier, the ability for it to know when that room is clean or dirty and automatically react, and its ability to mix that pure air around the room."
While Hill agrees that CADR is an important part of purification, he notes that it is important that products also sense and capture pollutants, and project air.
"I think what we're trying to do is pull back a little bit from the CADR metric," he said. "Not everyone needs an enormous CADR, has huge rooms or incredibly dirty air."
Several experts told Marketplace the CADR is the most important metric and an internationally recognized benchmark.
"CADR is what you want to know, period," said Francis (Bud) Offermann, an indoor air quality researcher who has helped develop test methods for the performance of portable air cleaners with the American Association of Home Appliance Manufacturers (AHAM).
"An air cleaner with a very high-efficient filter and very little air-flow rate will have a low CADR and little air-cleaning ability; same for an air cleaner with a very high air-flow rate and a very low filter efficiency." "
Re: Dyson air purifier outperformed by cheap DIY box fan filter in Marketplace test
#558The best part from an engineer at Dyson (his last name is Hill): "Dyson has developed its own testing methodology, the POLAR test method, which, unlike the CADR, Hill said, "measures the intelligence of the purifier, the ability for it to know when that room is clean or dirty and automatically react, and its ability to mix that pure air around the room." While Hill agrees that CADR is an important part of purificatio…
Also from Dysons site:
"The POLAR test chamber is much bigger than a CADR chambler, and more representative of real-world environments than existing standards dictate with a 81m3 footprint and no external fan to support air circulation – the purifier itself must do this."[1]
ie: dyson has written POLAR to exclude external fans into their new "standard". Honestly they also don't clarify what they mean by external fans. Since they compare to a box fan/filter in the CADR example above... one is left to either guess or assume that they are either talking about traditional fanned purifiers or are assuming that no hvac exists in "real-world" environments.
[1]https://www.dyson.com/newsroom/overview/update/december-2020...
Re: Dyson air purifier outperformed by cheap DIY box fan filter in Marketplace test
#559Earlier quoted context omitted.
Plenty of people raise their kids this way. When I see parents laugh when their kids fall down instead of panic, I smile. And the best part? The kids smile too, because they're actually looking to their parents for how to react. I'd rather raise daredevils than anxious wrecks. My best friend has a kid who's always climbing on stuff, falling down, getting hurt. That kid is going to grow up to be awesome.
Plenty of people need to rethink their parenting then. I laugh when my kid falls down. I scream when I saw my kid trying to stick a key into an electrical outlet, and I screamed when I saw my kid trying to put a finger into a vornado fan. Modern fans aren't the same as the box fans we grew up with. And adult would likely walk away with an emergency room bill and a bunch of stiches. A small child would likely lose a f…
it’s ok to stick a thing in an outlet. you get a minor jolt that’s it. licking the terminals of a 9V battery (a dare we did as kids) is worse.
Re: Dyson air purifier outperformed by cheap DIY box fan filter in Marketplace test
#560Earlier quoted context omitted.
Plenty of people need to rethink their parenting then. I laugh when my kid falls down. I scream when I saw my kid trying to stick a key into an electrical outlet, and I screamed when I saw my kid trying to put a finger into a vornado fan. Modern fans aren't the same as the box fans we grew up with. And adult would likely walk away with an emergency room bill and a bunch of stiches. A small child would likely lose a f…
If it makes you sleep better, most household fans are designed to not severe fingers. They use plastic blades (please don't buy household fans with steel blades) which are both light and dull. You might break it but a major cut is highly unlikely.
Ever stuck your finger in a fan with a metal blade?
I have, know what happened? Nothing.
I have a couple 80-100 year old GE fans. Putting your finger in the front doesn't do anything but push it out. Which makes sense if you look at the shape of the blades. The side and back are a little scarier, but i'm guessing unless you really jab it in fast, or get unlucky in some way the worse that will happen is some scraped up skin. They are definitely not _designed_ to sever fingers, for that you need a tablesaw. And none of them have enough rotating mass or HP that you can't stick your finger in the back and actually stop them by keeping your finger against the blades as they try and push your finger.
So, I'm not saying it cant happen, but your kid probably has a greater chance of losing a finger in your car door, or various other places like that before you have to worry about the fans. If you want to experiment with this find something approximating a finger and give it a try, maybe the woody bits of a leftover piece of asparagus.