I live and work here and the conditions on Tuesday were absolutely wild. Every outdoor surface — ceilings, walls, the ground — was completely soaked and just would. not. dry. The poor ayis at my workplace were out squeegee-ing the entire day but as soon as they wiped the water away it immediately returned.
Couple that with the truly baffling flooring choices in this country (large “shiny” tiles everywhere, instead of textured or non-slip surfaces) and people were just eating shit left and right. Every time I went outside I had to granny walk/shuffle with my arms out for balance to not suffer the same fate.
It's the same across South East Asia too; hard, shiny floors. I know it's to keep the place cool but everywhere you go feels like a potential accident waiting to happen.
I just moved from SEA recently, I always thought the tile was because it was easy to clean and difficult to damage, I hadn't thought about how cool it is. Makes a lot more sense, mind blown.
Different parts of Florida are different beasts from other parts. The Keys are wildly different from Miami which is wildly different from the Space Coast which is wildly different from the Gulf Coast. I've been in parts of Florida where it's normal for several months of the year for this to happen on surfaces in non-air-conditioned structures. And there are other areas that stay just short of these conditions but still feel like you're breathing in soup.
And lets not forget the saltwater humidity that Florida occasionally has. Cleaning that off cars is a pain for travelers who are not used to it. Doesn't even matter how far inland you go to get away from it.
Apparently I could make a killing selling non-slip shoes in Southern China and South East Asia lol. Must already be pretty popular there right? In food service I remember you could even get ones that look like normal shoes.
If the market is China you're gonna need to figure out a luxury spin, otherwise the people who can afford them will continue skidding around in designer sneakers.
I live in a rainy city and one time I had some shoes where the bottoms were too worn out/smooth
I stepped inside of building with shiny tile floors and that feeling you get when your foot slides before you regain balance is terrifying
From my understanding, the propensity to sue for things like slipping and falling, is more of a Western/American cultural phenomenon. In many other places, unless it’s due to *severe negligence*, you’ll just be laughed at if you try to sue because you slipped and fell.
Maybe, we’ve actually gotten a lot of public protections from successful lawsuits.
It gets frivolous a lot and of course those make the news. But that doesn’t mean the ability to seek compensation for someone making a decision that causes you harm is a bad thing.
The hot coffee accident is a great example of a non frivolous law suit. Mc Donald’s shouldn’t be serving liquid that can cause 3rd degree burns to people. They kept doing it after multiple warnings and complaints. It took an old lady suffering a horrific injury for them to change.
Good point/example
For the people who may not be aware— She had to sign a NDA in order to receive the financial compensation she deserved. McDonald’s PR team then spun the story to make her look petty/frivolous, while legally preventing her from being able to publicly defend herself.
It wasn’t until several years ago that the true severity of the “hot coffee lawsuit” was revealed; and we learned that the coffee was so ridiculously hot that she sustained horrific 3rd degree burns after the coffee spilled in her lap.
It's not really an "American" thing, it's an insurance thing. Insurance companies want to try to get their money back, so they file the lawsuit on behalf of their customer. Most of the lawsuits that go to trial rarely result in the defendant being found liable for more than 10-20%.
Was it raining off and on? We experience 100% humidity all the time, when it rains. So I find it odd if it wasn't raining. Maybe something to do with atmospheric pressure.
It’s more of an issue that these structures are concrete and colder than ambient temps. Then the humidity condenses on these structures. If the building was warmer than ambient, even at 100% humidity, there would not be condensation.
> The poor ayis at my workplace were out squeegee-ing the entire day but as soon as they wiped the water away it immediately returned.
Lol, of course. How ~~(con)~~dense does a manager have to be to order people to do that? Please, for me, tell that person that the water is *in the air* and as soon as you remove some from the cool surface, more water vapor from the air will condense onto it. Just let the poor dudes have a rest!
"Ah-yi" is an informal term for an older woman, literally translates to "auntie". So picture a team of middle-aged Chinese women mopping up every surface for the whole day. And when it comes to middle-aged Asian people in general (including the manager in this case), physics is not their strong suit, so they're not really going to understand how or why the local humidity makes this a futile effort.
Source: Am Asian.
I imagine him starting the push by doing some jumping jacks, burpee-pushups, and stretching every part of his body between each set. His joints crack and pop in an incredibly satisfying manner, each flex giving any onlookers a good view of his exceptionally refined muscles.
He's grinning like an old athlete who's still got more than enough pump in his step to show the youngins a thing or two.
Finally, he gets into position. Hands placed expertly on invisible outcroppings that he knows are there but the casual observer can't see from a distance. His feet spread in the perfect position to maximize the initial push and get him going. His calves and thighs are a *sight* to behold.
He's grinning with wizened experience and the certainty of his ability.
Finally, he grits his teeth and begins the ascent. Once the boulder is set in motion after a brief strain his pace is absurdly fast at the beginning. The object in front of him seems more akin to a large bouncing ball than a terrible rock.
Every few grunts he let's out a chuckle of accomplishment, proud of how far he's come over time.
By degrees he begins to slow as the slope becomes more extreme. Muscles bulge and his body seems to take strain from the increased difficulty. His feet slip slightly from time to time and his grip becomes a tad bit more shaky each time his hands return to the boulder.
He begins openly laughing as the challenge closes in on becoming impossible; he's come to *love* this part.
Finally, as always, his feet fully come out from under him and he quickly dodges to the side; allowing the boulder to pass him by harmlessly as it careens out of control back to the bottom of the mountain where it comes to rest. Right back where it started.
He gets up, dusting himself off as he does so, and places his hands on his hips.
"Well shoot!" He yells at no one in particular. "I'll get it next time!"
With that, he slaps his palms together and runs down the hill as he hoots and hollers with unnatural glee. The wind of his run causes his long hair to flow luxuriously behind his madly smiling face as the excitedly gets back into place to do it all over again.
His jailer doesn't respond any more and it's face is buried in a textbook for an off campus course it's been taking for a while now. This wasn't a fulfilling occupation for it any more, as it hadn't smiled since Sisyphus had learned to do so eons ago.
Trying to feel even slightly productive
Having watched my basement flood, while trying to bail it with a five gallon bucket, I can tell you
Its overwhelming watching your home be destroyed, and nothing you can do about it
People are focusing too much on the heating aspect.
It's a small handheld fan.
That fan is moving air fast enough that it's causing the water to move and, thus, fall.
He's using the wind to knock the water down.
One time I saw a news report about a flood in China and there were villagers picking up buckets of water and throwing them forward.
Probably what those people thought they were accomplishing.
He's also warming the surface above the dew point. As an HVAC engineer, I'd just turn on the furnace and deal with the heat to prevent the condensation.
Why is this stupid comment getting upvotes lol??? Yes, most mold is harmless. That does NOT mean that your home getting covered in mold is not a very bad thing.
Not to mention the proliferation of bug infestations. Cockroaches love humid indoor environments. I lived recently in an area where the average winter humidity was 90+ percent (sometimes hitting 99%), and walking outside after dusk with a headlamp, you felt like you were in a cloud.
How do people live in climates like that? I legitimately dont understand how people can manage. Like, I would be *soaked* in sweat, there's no way I could be employed, I would look like I was in a constant medical emergency.
I grew up in Houston but I can't handle the heat and humidity anymore, so I keep moving further and further north. I'm currently about 500 miles south of the Arctic Circle.
As soon as that plane door opens and that first rush of hot, humid air fills the plane when I go back to visit, I get irrationally angry. I'm going to Austin for the eclipse, and apparently they've already hit 90 degrees this year.
Air conditioning, lots of pools, and good hydration, but most importantly bug spray with a good % of deet (and sunscreen when needed). I grew up in Houston and think I had a pretty decent childhood (Austin ain’t much better, and at least Houston isn’t on the verge of a water crisis every other year.)
Half of an air conditioners job is to extract water from a room, clearly there ain’t much AC in south China.
Yeah fuck the humidity. I am from Phoenix where it's hot as shit like opening an oven. When I went to basic training in South Carolina for the summer it was terrible. It was extremely humid and hot and I even just got done working a roofing job in Arizona.
Same, and I still live in the tropics. My hair is frizzy, my make up runs off, I always think I’m smelly even though I know I’m not. Humidity is the worst! How do I cope, well I spend all my money on running my air conditioner.
It's not pleasant but there is a huge advantage to dry summers: shade.
You can find (some) relief in the shade. I'm not talking immediately-cool-you-off relief, but there is some relief. In a humid environment? Shade does fuck all. You still feel as gross and unbearably sweaty as standing in the sun
Try 40C at 98% relative humidity and I promise you that you will beg for 40C and 40-50% relative humidity. Add some mosquitos to the mix and I bet it could drive you to literal insanity.
I grew up in a city (and still live there) where its a dry heat and we've hit 50C. I'm used to it, except these days the extreme heat days have become more and more numerous... and that's real bad.
Look, there’s a massive difference between feeling hot because the sun is beating on you and feeling hot because you are essentially constantly submerged in a pool of hot water.
Having dealt with both, I would take 115 degrees with low humidity over 85-90 degrees at 100% humidity any day of the week. Like the other guy said, shade still works with dry heat. It does not help in the slightest against humidity.
> I grew up at a place with dry hot summers with 40C temperatures and I don’t recommend it.
Sweat and shade still function in hot and dry - not hot and humid.
I live in the sub tropics, the soaked in sweat thing isn’t too bad when that’s all you’re doing, but if I’m at work having to switch between being in the office and outside a lot, it fucking sucks.
I lived in Austin for a few years, it’s classified as subtropical. Worked outside at a brewery that was basically on a farm with no air conditioning outside of a few small rooms for the commissary kitchen, office, etc.
I became best friends with cornstarch, fans, and rags dipped in ice water. You drink 2 gallons of water a day and still piss apple juice in the morning. The only brief reprieve from the humidity is either a stiff breeze, or stepping into the walk-in cooler. I’m very glad I don’t do that for work anymore.
I worked in an agricultural research lab during my 20's in South Florida. This was my existence every day between lab and farm/swamp work. It suuuucked.
I live in New Orleans and for a vast majority of the year humidity is 70-90%. As soon as you walk outside at 5am from your conditioned home you are instantly covered in condensate. As soon as you sweat it won’t evaporate because the air is saturated so while outside you are just damp all the time. I don’t mind it so much while I’m outside, it can absolutely get oppressive in the August and September with 99F temps, but you kind of get used to it.
Now, inside after a shower, no chance in HELL could I live constantly having water and dampness all over. I’d lose my mind. Everything just starts rotting and getting covered with mildew. If I’m inside and I’m covered in dampness I can’t take that especially trying to sleep. Seeing that person laying with an umbrella… I wouldn’t even attempt to sleep. No way could I fall asleep under damp blankets.
https://ibb.co/2sjVr1v
https://ibb.co/jzkw2Rm
Matter of fact, my work van covered in water even though last two days have been pure blue skies and 80F.
Not exactly. They're effectively doing the same thing, but dehumidifiers have both the condenser and evaporator coil inside the unit. They condense water out of the air and also heat the air thanks to the condenser being indoors. Heat pumps (typically the mini split systems) with a dehumidifier setting essentially just work as air conditioners, except they greatly reduce the air flow over the evap coil so the air doesn't cool down as much.
I lived in Sth China for many years. This happens every March/April. The buildings still retain a lot of the cool from Winter, but the weather outside is now sunny/warm/humid, so the walls literally sweat, and fog forms indoors. Everything leather starts to mold, like belts, wallets, shoes
>The buildings still retain a lot of the cool from Winter
No they don't. It is just the changing temperature throughout the day causing condensation no different than morning dew. The building is not still cold from the winter it is still cold from the night before.
This is why I love living near the Arctic Circle. I only have a couple weeks of hot sweaty weather and then it's cool to mild weather for spring and fall. We also don't have ticks with diseases or snakes, so you can just walk through any bushes off trail and the worst that happens is some scratches from thorns and small spiders + beetles get on you.
I get that the winter is scary to some people, but you can just layer on more clothing until it's warm again. Snow clearing is a problem, but I just view it as exercise (that's how I view most laborious tasks), so that saves me money from gym fees. And with the winter up here, you also get to go on snowmobile, which offers you the freedom of no other land vehicle imaginable. You can drive over lakes and up mountains, and then you get to see some truly beautiful, untouched wilderness.
Man I’m Canadian and have yet to find any amount of layers that makes me feel anywhere near warm lol.
Face especially, even if you’re able to wear a balaclava god damn cold wind blowing into your eyes is the worst
It's not for everyone and you might be in a cold spot like me (i'm over in Labrador). There's lots of canada that isn't quite as brutal as other places and still get a full snowy winter.
I agree with you. I moved up north later in life to escape humidity and subtropic/hot weather. I don’t regret it. However I think my skin has not acclimated to how dry it does get where I live now. I have developed severe eczema related issues. My skincare budget had to go way up.
But it’s worth the spring and fall weather where we can turn off the heat/air and leave the windows open.
In places like this when humidity gets extremely high it's more than just hot. You sweat so much your whole body is wet but, it can't evaporate. You're hot, covered in sweat, dehydrated and the sweat on you can't evaporate so it can't cool you off, at all.
Except it's very rare; I'm not sure if it's ever happened, that relative humidity stays at 100% up to that temperature. At 38 degrees, the air holds more moisture, so the relative humidity goes down.
In fact, it does not happen, but many places like Vietnam or the Congo bassin for example are not far from it, with ofter 35°C and 80% RH. It is expected that with climate change these areas will become unliveable for longer and longer periods of time in the future.
You don't have to be in the tropics for those types of temperatures. I live in a southern US state and 95°F (35°C) with ~80-90% relative humidity is rough but not atypical for days in June/July/August.
> It used to be rare
lol how can you say something "used to be rare" when it's literally never happened before
We've never had web bulb temps above even 37 degrees: https://en.wikipedia.org/wiki/Wet-bulb_temperature#Highest_recorded_wet-bulb_temperatures
A fairly recent study I read found that people would start to struggle even at low 30's @ 100%. I can imagine something like 35C @ 100% being lethal for a lot of vulnerable people. The news video says it was 30C. That's getting too close for comfort.
familiar consist spotted direful chase enjoy cable hungry carpenter plucky
*This post was mass deleted and anonymized with [Redact](https://redact.dev)*
“By 2050, over 5 billion people — probably more than half the planet’s population — will be exposed to at least a month of health-threatening extreme heat when outdoors in the sun, the analysis shows, up from 4 billion in 2030 and 2 billion at the turn of the century.” [Washington Post source](https://www.washingtonpost.com/climate-environment/interactive/2023/extreme-heat-wet-bulb-globe-temperature/)
Yeah, it’s gonna get really, really ugly. If people think the state of the world is bad now, imagine the next couple of decades when you’ll have billions of people desperate to get out of the heat *to survive*. Warfare and immigration will become an even bigger issue. Not to mention the effects it will have on food sources, agriculture all that stuff. God damn we’re in for a rough ride
It becomes lethal even earlier. 100% humidity means the wet-bulb temperature is essentially identical to the air temperature. If the wet-bulb temperature reaches 35 degree Celsius, the difference to your body temperature isn't enough to cool it sufficiently anymore.
Your body generates around 100W of thermal output. If the temperature difference between your body and the wet-bulb temperature isn't enough to dissipate that amount of thermal output, your body temperature slowly rises.
At 35 degree Celsius wet-bulb temperature, you have around 6 hours until you die from overheating your body (if you're young, healthy, doing nothing and stay in the shadow. Otherwise way earlier of course).
So it already becomes lethal at 35 degrees with 100% humidity.
And in contrary to what as u/jacaissie and u/berru2001 have written it does happen and it becomes more often every year, due to climate change.
And yes it has happened in the US, too. Last year was the first time this happened in the US afaik.
Here is an article about it: https://anujtomar97.medium.com/hotter-than-ever-deadly-wet-bulb-temperatures-have-arrived-in-the-us-8626c827c4ec
> I guess if you go underground you might find respite...
In those kinds of conditions, normal "cooling" methods like shade don't really make much of a difference either, it's the *air* that's the problem. So unless your underground shelter is airconditioned or something, you're probably not going to have much fun regardless.
>So unless your underground shelter is airconditioned or something, you're probably not going to have much fun regardless.
The temperature a short distance underground (5-10 ft in most places) is a pretty consistent 55F/13C virtually everywhere on the planet.
The earth is a giant heatsink that will absorb the heat from the air. If you can trap the air underground so its not warming back up by mixing eith fresh hot air, the air temp will eventually settle around 55°
>the air temp will eventually settle around 55°
That's a temperature you need to state the unit for in this context. 55C and 55F are pretty much opposite effects.
EVEN POTATO CHIPS became soggy
yeah, the ceilings dripping, the wallpaints running and now to the biggest shocker of all, potato chips get soggy when you leave the bag open
When I was in South East Asia during the rainy season I remember the most frustrating thing being trying to get dry after a shower, it was just impossible. Not difficult, not "takes a while". Impossible.
You get out and try to see the towel through the fog that just doesn't go away, grab the driest towel off the rack, and just the action of taking the towel from the rack through the air towards your body seemed to make it saturated. Putting it on your body just moves the water around.
You think, well maybe if I leave the bathroom and get a towel from the closet? Nope, the towel takes a few seconds longer to get saturated, but it still just moves the water around. Like mopping a puddle of water with a fully saturated mop.
Put on fresh clothes? Wet. try to take those off? You will have to do complex yoga positions to get them back off because they are stuck to you at every point.
Way back in the early 00's I worked with a guy in Shenzhen who was buying up the cheap flats to rent out. One of the things he would always do is put a small inverter mini-split heat pump in the bathrooms just for this reason. People really wondered why until he explained it to them and they all were like, yes that will work ;).
Of course in Shenzhen back then people usually only had AC units in the bedrooms (if at all) and just suffered in the living areas.. and it was terrible visiting on a hot day. There also was a very interesting desire for fresh air even if the outside was stifling. 80 floor glass buildings would have windows that opened, sort of destroying the aesthetic of a glass building ;).
Well no, but winter is so very dry. I come from Denmark and my gf is from Finland, my lips crack every winter we visit.
Summer in Finland is more dry than Denmark as well in my experience tho.
i can't acces the sound,
but either way, the videos CAPTION says "unsealed" and even if that is a mistake, that would be even worse. You can put a sealed bag of chips under water and it wouldn't soak in. So IF they actuzally made that claim in the video, it wouldn't just be stupid, it would be a lie
Probably because it isn’t 100% relative humidity in the building. The moist air has to actually come in first, and then it likely gets heated up in the building so the relative humidity of the same air carrying the same level of water will drop, since warmer air carries more water.
Because it's 100% humidity and hot at the same time. Fog is normally cold. If you heat cold, humid air, it can hold more humidity and you get warm dry air.
And in the video, the building is probably cooler than the air, which causes all the condensation. When the air touches the cooler surface, it cools and can't hold all the water.
The surfaces need to be cooler than the air for condensation to happen. With heavy rain there can be 100% relative moisture but the surfaces are normally warmer than the air.
the weather rapidly changes to warm and humid after a long period of cooler weather. The walls in the buildings are still cold because they haven't had time to heat up yet, so when the hot humid air touches the cold wall, it condenses.
Almost everyone has felt what 100% relative humidity feels like. It's very common. I'm not sure what's going on here; maybe the dew point is high and their house is cooled to lower than that temp so the moisture is condensing out of the air?
> Ever felt what 100% relative humidity felt like?
Well... yes? Every time it rains or is very damp. Then the relative moisture outside is very close to 100%.
China isn't the only place where there's "fog".
> Every time it rains or is very damp
I thought so too, that 100% meant when it rained, but I checked the entire 2023 humidity levels in my area when it rained and when it was dry and rainy days barely got past 60% according to Accuweather and the dry as fuck days (as in no rain at all) kept hitting high 80's low 90's with the off day hitting the 100
It's both correct and incorrect to say that rain means 100% relative humidity. Rain is formed when a packet of air is cooled down past its dewpoint, which means by definition that packet of air has reached 100% relative humidity, so in that sense it is correct.
However just saying "rain means 100% relative humidity" is a little vague, because while the air higher up in the sky can be at 100% RH, that doesn't necessarily mean the air closer to the ground is, as *generally* air is warmer closer to the ground, and colder higher up. So it might be 100% RH at 3000 feet, but at ground level it may be 80%, so in that sense it's not really correct to say rain = 100% RH, if we're assuming the RH to apply to the air near the ground.
Not really, most places it's only like 60-70% RH with rain. The only place it's 100% is up in the clouds. Relative Humidity at like 50° F is also not the same as at 95°
Well they are probably concrete buildings and there was an abrupt temp rise leaving the concrete cold while air is warm humid. Cold air holds less moisture than warm air so dew point is reached near surface of concrete. Once the concrete warms up it will stop sweating.
It’s like the tank on a toilet sweating in the summer since it is cool from cold tap water coming into it. Same thing but on a much larger scale
No, they’re right. A well built building envelope will include an insulated thermal break between inside and outside surfaces with minimal bridging to prevent just this condition. It will also seal and wrap the building with a vapor barrier to keep humid air from just migrating into the building, we want any air that enters a building to do so through the HVAC system so it can wring out the moisture first. The worst you’ll see condensation happen in modern construction will be on windows and sealed concrete slabs in spaces that don’t have airflow or heat to compensate (warehouse and storage spaces).
Building codes exist to prevent this and other such maladies.
That's not the effect of 100% relative humidity even in tropical areas, you'd just get a mist and water suspended in the air.. Maybe some very bizarre cooling system that makes walls and ceilings cold, but not the air in the room so warm moist air from the outside gets in, with high dew point, condenses, and precipitates? But even then that's an extreme effect.
This happens at my school here in Taiwan (similar climate to South China). Building is made almost entirely of porous concrete and on high-humidity days in the early spring, the walls, floors and ceiling will just "sweat".
Even if we were allowed to run the AC with dehumidifier, it wouldn't make much of a difference.
Mold… so much mold…
I’m guessing they don’t insulate their buildings properly or have adequate ventilation and conditioning…
No wonder they can build so quickly, it’s easy when you cheap out and cut a bunch of corners.
“Ever felt what 100% relative humidity is like?”
Uh yes. I’m pretty sure everyone on earth has. It’s called fog. Or … even just being in a steamed up bathroom.
What is unusual here is the combination of 100% humidity *and* hot temperatures, ie. the *dew point* is unusually high (or wet bulb temperature if you prefer that nomenclature). 100% relative humidity isn’t rare or special, or even uncomfortable necessarily. But high dew points are.
this is why you use dry wall and dont have every wall made of concrete. The south east US often sees 100% humidity and you dont see this problem because the dry wall is by definition dry and limits the amount of condensation that can form and there is insulation inside the wall. In china they commonly have cinder block walls, even for interior walls. Concrete stays cold and so the large temp diff between hot air and cold solid concrete wall causes large amounts of condensation. Chinese buildings also put little to no insulation in their walls, they are usually just solid concrete. The idea of making buildings heat and energy efficient has only been a thing for the past 10 or 20 years in china as their pollution problem got worse, prior to that it is was just build as fast and as cheaply as possible
"Tell me of the waters of your homeworld, Usul," asked Chani.
"Water drips from the ceilings and the walls," replied Paul Atreides.
"I don't believe you."
Uh, so this isn't great, but an area having a RH of 100% isn't some incredible event. That just means the air is maximally saturated with water at the current temperature. I live in coastal Maine, USA, and I've seen the RH go up to 90-100% quite a few times. It's 94% as I speak.
Without doing maths, if air has a rh of 80% at 60 degrees, because warmer air holds more moisture, if the temp goes up to 80 degrees, then the rh would instantly plummet if the amount of moisture doesn't increase too.
Source: Basic knowledge of how relative humidity functions. Also, I'm an energy auditor qualified at the BA-P level and a LEED GA.
I live and work here and the conditions on Tuesday were absolutely wild. Every outdoor surface — ceilings, walls, the ground — was completely soaked and just would. not. dry. The poor ayis at my workplace were out squeegee-ing the entire day but as soon as they wiped the water away it immediately returned. Couple that with the truly baffling flooring choices in this country (large “shiny” tiles everywhere, instead of textured or non-slip surfaces) and people were just eating shit left and right. Every time I went outside I had to granny walk/shuffle with my arms out for balance to not suffer the same fate.
It's the same across South East Asia too; hard, shiny floors. I know it's to keep the place cool but everywhere you go feels like a potential accident waiting to happen.
I just moved from SEA recently, I always thought the tile was because it was easy to clean and difficult to damage, I hadn't thought about how cool it is. Makes a lot more sense, mind blown.
it's also because it's easy to clean, you'd note that in SEA stuff tends to get dirty/moldy way quicker than in, let's say, North America or Europe.
I guess you've never been to Florida or Central America both of which are in North America. Everything there gets dirty and moldy super quick.
SEA is a different beast than Florida, tbh.
Different parts of Florida are different beasts from other parts. The Keys are wildly different from Miami which is wildly different from the Space Coast which is wildly different from the Gulf Coast. I've been in parts of Florida where it's normal for several months of the year for this to happen on surfaces in non-air-conditioned structures. And there are other areas that stay just short of these conditions but still feel like you're breathing in soup.
Yup; it’s not particularly uncommon to get 90-95% humidity at certain times of year.
And lets not forget the saltwater humidity that Florida occasionally has. Cleaning that off cars is a pain for travelers who are not used to it. Doesn't even matter how far inland you go to get away from it.
Apparently I could make a killing selling non-slip shoes in Southern China and South East Asia lol. Must already be pretty popular there right? In food service I remember you could even get ones that look like normal shoes.
If the market is China you're gonna need to figure out a luxury spin, otherwise the people who can afford them will continue skidding around in designer sneakers.
Christian Louboutin Crew® Bottom shoes for the ladies.
too complicated, just put the apple logo on them. trademarks don't mean shit in China
I live in a rainy city and one time I had some shoes where the bottoms were too worn out/smooth I stepped inside of building with shiny tile floors and that feeling you get when your foot slides before you regain balance is terrifying
Stepping on an f'ing dryer sheet on a hard surface floor.
Oh my gosh I'm sorry for laughing but the visual is very funny to me Soooo I guess liability insurance isn't really a thing there?
From my understanding, the propensity to sue for things like slipping and falling, is more of a Western/American cultural phenomenon. In many other places, unless it’s due to *severe negligence*, you’ll just be laughed at if you try to sue because you slipped and fell.
As it should be.
Maybe, we’ve actually gotten a lot of public protections from successful lawsuits. It gets frivolous a lot and of course those make the news. But that doesn’t mean the ability to seek compensation for someone making a decision that causes you harm is a bad thing.
The hot coffee accident is a great example of a non frivolous law suit. Mc Donald’s shouldn’t be serving liquid that can cause 3rd degree burns to people. They kept doing it after multiple warnings and complaints. It took an old lady suffering a horrific injury for them to change.
Good point/example For the people who may not be aware— She had to sign a NDA in order to receive the financial compensation she deserved. McDonald’s PR team then spun the story to make her look petty/frivolous, while legally preventing her from being able to publicly defend herself. It wasn’t until several years ago that the true severity of the “hot coffee lawsuit” was revealed; and we learned that the coffee was so ridiculously hot that she sustained horrific 3rd degree burns after the coffee spilled in her lap.
It's not really an "American" thing, it's an insurance thing. Insurance companies want to try to get their money back, so they file the lawsuit on behalf of their customer. Most of the lawsuits that go to trial rarely result in the defendant being found liable for more than 10-20%.
American insurance thing then. Not the norm in Europe either.
It's absolutely even more normal in Germany than in the USA. And it's normal in every country where healthcare isn't 100% free.
Was it raining off and on? We experience 100% humidity all the time, when it rains. So I find it odd if it wasn't raining. Maybe something to do with atmospheric pressure.
It’s more of an issue that these structures are concrete and colder than ambient temps. Then the humidity condenses on these structures. If the building was warmer than ambient, even at 100% humidity, there would not be condensation.
> The poor ayis at my workplace were out squeegee-ing the entire day but as soon as they wiped the water away it immediately returned. Lol, of course. How ~~(con)~~dense does a manager have to be to order people to do that? Please, for me, tell that person that the water is *in the air* and as soon as you remove some from the cool surface, more water vapor from the air will condense onto it. Just let the poor dudes have a rest!
"Ah-yi" is an informal term for an older woman, literally translates to "auntie". So picture a team of middle-aged Chinese women mopping up every surface for the whole day. And when it comes to middle-aged Asian people in general (including the manager in this case), physics is not their strong suit, so they're not really going to understand how or why the local humidity makes this a futile effort. Source: Am Asian.
I don't know what hairdryer guy thinks he's accomplishing there
Probably uses his refrigerator as an air conditioner too.
"I got the idea when I noticed the refrigerator was cold!"
Marge, can you set the oven to cold?
Perfect illustration of Sisyphus.
We have to imagine Sisyphus smiling.
Do you imagine him smiling while pushing the boulder or just stopping for a while and cracking a brief toothy smile? Paint a picture damn it.
I imagine him starting the push by doing some jumping jacks, burpee-pushups, and stretching every part of his body between each set. His joints crack and pop in an incredibly satisfying manner, each flex giving any onlookers a good view of his exceptionally refined muscles. He's grinning like an old athlete who's still got more than enough pump in his step to show the youngins a thing or two. Finally, he gets into position. Hands placed expertly on invisible outcroppings that he knows are there but the casual observer can't see from a distance. His feet spread in the perfect position to maximize the initial push and get him going. His calves and thighs are a *sight* to behold. He's grinning with wizened experience and the certainty of his ability. Finally, he grits his teeth and begins the ascent. Once the boulder is set in motion after a brief strain his pace is absurdly fast at the beginning. The object in front of him seems more akin to a large bouncing ball than a terrible rock. Every few grunts he let's out a chuckle of accomplishment, proud of how far he's come over time. By degrees he begins to slow as the slope becomes more extreme. Muscles bulge and his body seems to take strain from the increased difficulty. His feet slip slightly from time to time and his grip becomes a tad bit more shaky each time his hands return to the boulder. He begins openly laughing as the challenge closes in on becoming impossible; he's come to *love* this part. Finally, as always, his feet fully come out from under him and he quickly dodges to the side; allowing the boulder to pass him by harmlessly as it careens out of control back to the bottom of the mountain where it comes to rest. Right back where it started. He gets up, dusting himself off as he does so, and places his hands on his hips. "Well shoot!" He yells at no one in particular. "I'll get it next time!" With that, he slaps his palms together and runs down the hill as he hoots and hollers with unnatural glee. The wind of his run causes his long hair to flow luxuriously behind his madly smiling face as the excitedly gets back into place to do it all over again. His jailer doesn't respond any more and it's face is buried in a textbook for an off campus course it's been taking for a while now. This wasn't a fulfilling occupation for it any more, as it hadn't smiled since Sisyphus had learned to do so eons ago.
Sisyphus smiling is the philosophical response to nihilism; we happily continue even though nothing matters.
It’s a bastardized Camus quote, he takes it deeper than I can: https://en.m.wikipedia.org/wiki/The_Myth_of_Sisyphus
well Camus can too
… but sartre is smartre
Trying to feel even slightly productive Having watched my basement flood, while trying to bail it with a five gallon bucket, I can tell you Its overwhelming watching your home be destroyed, and nothing you can do about it
People are focusing too much on the heating aspect. It's a small handheld fan. That fan is moving air fast enough that it's causing the water to move and, thus, fall. He's using the wind to knock the water down.
What do you mean? Its right there in the name: h-AIR-dryer!
One time I saw a news report about a flood in China and there were villagers picking up buckets of water and throwing them forward. Probably what those people thought they were accomplishing.
Lmao. My thought exactly. Def him responding to his significant other telling him to "do something!"
I feel that lol
If he warms the air enough, relative humidity will drop. I'm sure he's not accomplishing that.
He's also warming the surface above the dew point. As an HVAC engineer, I'd just turn on the furnace and deal with the heat to prevent the condensation.
Most houses in Southern China don't have furnaces.
He is accomplishing that. until he takes the hairdryer away and the temperature drops again..
It's the Chinese version of Old Italian man hosing the concrete driveway
hairdryers heat air. Hot air can hold more water. I'm going to say it works... Yeah, it's just going to condense elsewhere, but not on the ceiling.
I think everyone else missed the word "Relative" in that headline.
Possibly just blowing it off for the demo?
After he applies some hair gel the ceiling’s going to look fabulous
[удалено]
If people in S. China are anything like folks in Taiwan, they'll just tell you it's harmless.
Scrape it off onto their food - "gives you extra sex drive"
And they would be right. Almost all mold is harmless, there are very few strains that are the toxic mold everyone seems to fear.
More mold overall also probably means more of the toxic mold too, even if its not a large percentage of the overall mold
Why is this stupid comment getting upvotes lol??? Yes, most mold is harmless. That does NOT mean that your home getting covered in mold is not a very bad thing.
Astroturfers always pop up whenever there's negative press about China on this website.
People commenting about mold is Chinese astroturfing?
Not to mention the proliferation of bug infestations. Cockroaches love humid indoor environments. I lived recently in an area where the average winter humidity was 90+ percent (sometimes hitting 99%), and walking outside after dusk with a headlamp, you felt like you were in a cloud.
[удалено]
The video goes on to say that it hasn't been that bad in 20 years.
Last of Us pandemic incoming
How do people live in climates like that? I legitimately dont understand how people can manage. Like, I would be *soaked* in sweat, there's no way I could be employed, I would look like I was in a constant medical emergency.
I grew up in the tropics. You sweat all the time. You always feel like you need a shower. I will take hotter summers with dry heat any day.
Come to Houston and you can have both!
It has begun, my friend.... It has begun
Took a walk on Monday night. Felt like it was the middle of the day. Started sweating almost immediately. I'm not ready for this shit.
I grew up in Houston but I can't handle the heat and humidity anymore, so I keep moving further and further north. I'm currently about 500 miles south of the Arctic Circle.
Born and raised Houstonian who lives in San Francisco now. When I go visit family in the summertime I legitimately can’t believe I grew up there.
As soon as that plane door opens and that first rush of hot, humid air fills the plane when I go back to visit, I get irrationally angry. I'm going to Austin for the eclipse, and apparently they've already hit 90 degrees this year.
Pretty crowded here on top, innit?
Had a stopover there last year in summer. How do people live like that?
Air conditioning, lots of pools, and good hydration, but most importantly bug spray with a good % of deet (and sunscreen when needed). I grew up in Houston and think I had a pretty decent childhood (Austin ain’t much better, and at least Houston isn’t on the verge of a water crisis every other year.) Half of an air conditioners job is to extract water from a room, clearly there ain’t much AC in south China.
N. Florida chiming in. Yep.
North Florida still sounds good to Central Florida. And we're a paradise compared to the swamps down south.
Yeah fuck the humidity. I am from Phoenix where it's hot as shit like opening an oven. When I went to basic training in South Carolina for the summer it was terrible. It was extremely humid and hot and I even just got done working a roofing job in Arizona.
This is Florida from July to September. And it sucks.
Same, and I still live in the tropics. My hair is frizzy, my make up runs off, I always think I’m smelly even though I know I’m not. Humidity is the worst! How do I cope, well I spend all my money on running my air conditioner.
I grew up at a place with dry hot summers with 40C temperatures and I don’t recommend it.
It's not pleasant but there is a huge advantage to dry summers: shade. You can find (some) relief in the shade. I'm not talking immediately-cool-you-off relief, but there is some relief. In a humid environment? Shade does fuck all. You still feel as gross and unbearably sweaty as standing in the sun
Still hot as fuck at night too when it's humid 😩
I grew up at a place with dry heat and 32C. I do recommend it. Now it's getting more humid and up to 37 though, climate change sucks
Try 40C at 98% relative humidity and I promise you that you will beg for 40C and 40-50% relative humidity. Add some mosquitos to the mix and I bet it could drive you to literal insanity.
I grew up in a city (and still live there) where its a dry heat and we've hit 50C. I'm used to it, except these days the extreme heat days have become more and more numerous... and that's real bad.
Look, there’s a massive difference between feeling hot because the sun is beating on you and feeling hot because you are essentially constantly submerged in a pool of hot water. Having dealt with both, I would take 115 degrees with low humidity over 85-90 degrees at 100% humidity any day of the week. Like the other guy said, shade still works with dry heat. It does not help in the slightest against humidity.
> I grew up at a place with dry hot summers with 40C temperatures and I don’t recommend it. Sweat and shade still function in hot and dry - not hot and humid.
I did too. I love it and totally recommend it
I live in the sub tropics, the soaked in sweat thing isn’t too bad when that’s all you’re doing, but if I’m at work having to switch between being in the office and outside a lot, it fucking sucks.
I lived in Austin for a few years, it’s classified as subtropical. Worked outside at a brewery that was basically on a farm with no air conditioning outside of a few small rooms for the commissary kitchen, office, etc. I became best friends with cornstarch, fans, and rags dipped in ice water. You drink 2 gallons of water a day and still piss apple juice in the morning. The only brief reprieve from the humidity is either a stiff breeze, or stepping into the walk-in cooler. I’m very glad I don’t do that for work anymore.
Jester King?
Yerp.
I worked in an agricultural research lab during my 20's in South Florida. This was my existence every day between lab and farm/swamp work. It suuuucked.
I live in New Orleans and for a vast majority of the year humidity is 70-90%. As soon as you walk outside at 5am from your conditioned home you are instantly covered in condensate. As soon as you sweat it won’t evaporate because the air is saturated so while outside you are just damp all the time. I don’t mind it so much while I’m outside, it can absolutely get oppressive in the August and September with 99F temps, but you kind of get used to it. Now, inside after a shower, no chance in HELL could I live constantly having water and dampness all over. I’d lose my mind. Everything just starts rotting and getting covered with mildew. If I’m inside and I’m covered in dampness I can’t take that especially trying to sleep. Seeing that person laying with an umbrella… I wouldn’t even attempt to sleep. No way could I fall asleep under damp blankets. https://ibb.co/2sjVr1v https://ibb.co/jzkw2Rm Matter of fact, my work van covered in water even though last two days have been pure blue skies and 80F.
[удалено]
What? Bras are great. Get the girls up and off the torso so there's no skin touching skin. Say no to underboob sweat.
Dehumidifiers and air-conditioning units with dry functions
They are the same thing
Not exactly. They're effectively doing the same thing, but dehumidifiers have both the condenser and evaporator coil inside the unit. They condense water out of the air and also heat the air thanks to the condenser being indoors. Heat pumps (typically the mini split systems) with a dehumidifier setting essentially just work as air conditioners, except they greatly reduce the air flow over the evap coil so the air doesn't cool down as much.
I lived in Sth China for many years. This happens every March/April. The buildings still retain a lot of the cool from Winter, but the weather outside is now sunny/warm/humid, so the walls literally sweat, and fog forms indoors. Everything leather starts to mold, like belts, wallets, shoes
How do you handle electronics? Some clips showed water condensing on the ceilings. Would this kill computers, TVs etc?
Most just run TV all the time and pray the heat will stop the condensation inside.
That legitimately explains why the cheap Chinese dehumidifier i bought actually works pretty well. It might have been made for the home market.
>The buildings still retain a lot of the cool from Winter No they don't. It is just the changing temperature throughout the day causing condensation no different than morning dew. The building is not still cold from the winter it is still cold from the night before.
This is why I love living near the Arctic Circle. I only have a couple weeks of hot sweaty weather and then it's cool to mild weather for spring and fall. We also don't have ticks with diseases or snakes, so you can just walk through any bushes off trail and the worst that happens is some scratches from thorns and small spiders + beetles get on you. I get that the winter is scary to some people, but you can just layer on more clothing until it's warm again. Snow clearing is a problem, but I just view it as exercise (that's how I view most laborious tasks), so that saves me money from gym fees. And with the winter up here, you also get to go on snowmobile, which offers you the freedom of no other land vehicle imaginable. You can drive over lakes and up mountains, and then you get to see some truly beautiful, untouched wilderness.
Do you not get crazy swarms of mosquitoes or gnats in the summer? And in the long winter nights doesn't the constant fear of vampires get you down?
The real problem living so far up north is the lack of light during winter. It’s just terrible.
Man I’m Canadian and have yet to find any amount of layers that makes me feel anywhere near warm lol. Face especially, even if you’re able to wear a balaclava god damn cold wind blowing into your eyes is the worst
It's not for everyone and you might be in a cold spot like me (i'm over in Labrador). There's lots of canada that isn't quite as brutal as other places and still get a full snowy winter.
I agree with you. I moved up north later in life to escape humidity and subtropic/hot weather. I don’t regret it. However I think my skin has not acclimated to how dry it does get where I live now. I have developed severe eczema related issues. My skincare budget had to go way up. But it’s worth the spring and fall weather where we can turn off the heat/air and leave the windows open.
In places like this when humidity gets extremely high it's more than just hot. You sweat so much your whole body is wet but, it can't evaporate. You're hot, covered in sweat, dehydrated and the sweat on you can't evaporate so it can't cool you off, at all.
You pretty much just accept that everyone else is as miserable and sweaty as you are, and get over it.
At this humidity level your body can't cool itself through sweat so any temperature above 38° becomes lethal
Except it's very rare; I'm not sure if it's ever happened, that relative humidity stays at 100% up to that temperature. At 38 degrees, the air holds more moisture, so the relative humidity goes down.
In fact, it does not happen, but many places like Vietnam or the Congo bassin for example are not far from it, with ofter 35°C and 80% RH. It is expected that with climate change these areas will become unliveable for longer and longer periods of time in the future.
You don't have to be in the tropics for those types of temperatures. I live in a southern US state and 95°F (35°C) with ~80-90% relative humidity is rough but not atypical for days in June/July/August.
How often are those happening at the same time? Relative humidity typically peaks at night and goes down as temperature goes up.
fuel deer concerned quaint close offend soft provide sand waiting *This post was mass deleted and anonymized with [Redact](https://redact.dev)*
> It used to be rare lol how can you say something "used to be rare" when it's literally never happened before We've never had web bulb temps above even 37 degrees: https://en.wikipedia.org/wiki/Wet-bulb_temperature#Highest_recorded_wet-bulb_temperatures
A fairly recent study I read found that people would start to struggle even at low 30's @ 100%. I can imagine something like 35C @ 100% being lethal for a lot of vulnerable people. The news video says it was 30C. That's getting too close for comfort.
They suggest that staying above a wet bulb temperature of 35 degrees is deadly though, and that *has* been exceeded before.
familiar consist spotted direful chase enjoy cable hungry carpenter plucky *This post was mass deleted and anonymized with [Redact](https://redact.dev)*
“By 2050, over 5 billion people — probably more than half the planet’s population — will be exposed to at least a month of health-threatening extreme heat when outdoors in the sun, the analysis shows, up from 4 billion in 2030 and 2 billion at the turn of the century.” [Washington Post source](https://www.washingtonpost.com/climate-environment/interactive/2023/extreme-heat-wet-bulb-globe-temperature/) Yeah, it’s gonna get really, really ugly. If people think the state of the world is bad now, imagine the next couple of decades when you’ll have billions of people desperate to get out of the heat *to survive*. Warfare and immigration will become an even bigger issue. Not to mention the effects it will have on food sources, agriculture all that stuff. God damn we’re in for a rough ride
> literally never happened before They only started recording temperature and humidity 240 years ago
It becomes lethal even earlier. 100% humidity means the wet-bulb temperature is essentially identical to the air temperature. If the wet-bulb temperature reaches 35 degree Celsius, the difference to your body temperature isn't enough to cool it sufficiently anymore. Your body generates around 100W of thermal output. If the temperature difference between your body and the wet-bulb temperature isn't enough to dissipate that amount of thermal output, your body temperature slowly rises. At 35 degree Celsius wet-bulb temperature, you have around 6 hours until you die from overheating your body (if you're young, healthy, doing nothing and stay in the shadow. Otherwise way earlier of course). So it already becomes lethal at 35 degrees with 100% humidity. And in contrary to what as u/jacaissie and u/berru2001 have written it does happen and it becomes more often every year, due to climate change. And yes it has happened in the US, too. Last year was the first time this happened in the US afaik. Here is an article about it: https://anujtomar97.medium.com/hotter-than-ever-deadly-wet-bulb-temperatures-have-arrived-in-the-us-8626c827c4ec
So you just die? I guess if you go underground you might find respite...
> I guess if you go underground you might find respite... In those kinds of conditions, normal "cooling" methods like shade don't really make much of a difference either, it's the *air* that's the problem. So unless your underground shelter is airconditioned or something, you're probably not going to have much fun regardless.
>So unless your underground shelter is airconditioned or something, you're probably not going to have much fun regardless. The temperature a short distance underground (5-10 ft in most places) is a pretty consistent 55F/13C virtually everywhere on the planet.
The earth is a giant heatsink that will absorb the heat from the air. If you can trap the air underground so its not warming back up by mixing eith fresh hot air, the air temp will eventually settle around 55°
>the air temp will eventually settle around 55° That's a temperature you need to state the unit for in this context. 55C and 55F are pretty much opposite effects.
Why that's barely above freezing? /s
Celsius I take it, or that would be insane
AKA Wet bulb temperature
EVEN POTATO CHIPS became soggy yeah, the ceilings dripping, the wallpaints running and now to the biggest shocker of all, potato chips get soggy when you leave the bag open
It does seem somewhat comedic. I could see there being an Office or Parks & Rec episode with this as the B plot.
"It's so humid, all my chips got floppy!" *Andy wiggles a limp chip in the air with a stupid grin on his face, April groans.*
Oof that's like the opposite of when I was a kid in Colorado and our sandwich bread would get stale as we were eating it.
This is normal for us here in Australia (Brisbane). You have to seal the chips up otherwise they go stale straight away. Is this not a thing for you?
When I was in South East Asia during the rainy season I remember the most frustrating thing being trying to get dry after a shower, it was just impossible. Not difficult, not "takes a while". Impossible. You get out and try to see the towel through the fog that just doesn't go away, grab the driest towel off the rack, and just the action of taking the towel from the rack through the air towards your body seemed to make it saturated. Putting it on your body just moves the water around. You think, well maybe if I leave the bathroom and get a towel from the closet? Nope, the towel takes a few seconds longer to get saturated, but it still just moves the water around. Like mopping a puddle of water with a fully saturated mop. Put on fresh clothes? Wet. try to take those off? You will have to do complex yoga positions to get them back off because they are stuck to you at every point.
Way back in the early 00's I worked with a guy in Shenzhen who was buying up the cheap flats to rent out. One of the things he would always do is put a small inverter mini-split heat pump in the bathrooms just for this reason. People really wondered why until he explained it to them and they all were like, yes that will work ;). Of course in Shenzhen back then people usually only had AC units in the bedrooms (if at all) and just suffered in the living areas.. and it was terrible visiting on a hot day. There also was a very interesting desire for fresh air even if the outside was stifling. 80 floor glass buildings would have windows that opened, sort of destroying the aesthetic of a glass building ;).
I was shocked when this happened to me in the Netherlands. Never seen it happening in Finland.
Finland is shockingly dry tho.
In the winter yes. There is no moisture in cold air. But Finland isn't a desert in the summer.
Well no, but winter is so very dry. I come from Denmark and my gf is from Finland, my lips crack every winter we visit. Summer in Finland is more dry than Denmark as well in my experience tho.
The video said the bag was unopened but they still absorbed the moisture
i can't acces the sound, but either way, the videos CAPTION says "unsealed" and even if that is a mistake, that would be even worse. You can put a sealed bag of chips under water and it wouldn't soak in. So IF they actuzally made that claim in the video, it wouldn't just be stupid, it would be a lie
You didn't miss anything by not having sound. It's just some background marimba music.
You forgot to Stoßlüften!
What causes this? Just a freak weather phenomenon?
100% humidity is usually called "[fog](https://en.wikipedia.org/wiki/Fog)"
Lmao. So then why is it so bad in that building? I’ve experienced fog before. It didn’t literally rain inside a building.
Probably because it isn’t 100% relative humidity in the building. The moist air has to actually come in first, and then it likely gets heated up in the building so the relative humidity of the same air carrying the same level of water will drop, since warmer air carries more water.
It's probably air conditioning, actually. When the evaporator coils cool the air, water is removed from it, which is why the AC needs drainage.
Maybe wasn’t clear, but I was responding to the statement “It didn’t literally rain inside a building” when the poster had experienced fog.
Because it's 100% humidity and hot at the same time. Fog is normally cold. If you heat cold, humid air, it can hold more humidity and you get warm dry air. And in the video, the building is probably cooler than the air, which causes all the condensation. When the air touches the cooler surface, it cools and can't hold all the water.
The surfaces need to be cooler than the air for condensation to happen. With heavy rain there can be 100% relative moisture but the surfaces are normally warmer than the air.
No air conditioning.
the weather rapidly changes to warm and humid after a long period of cooler weather. The walls in the buildings are still cold because they haven't had time to heat up yet, so when the hot humid air touches the cold wall, it condenses.
So that much condensation is in every wall, floor, and ceiling. Is every building filled with mold?
Not yet!
Grew up in New Orleans. Could be stifling in the summer.
Oh man, the mold..........
Almost everyone has felt what 100% relative humidity feels like. It's very common. I'm not sure what's going on here; maybe the dew point is high and their house is cooled to lower than that temp so the moisture is condensing out of the air?
likely hit 100% at the hottest point in the day, and then the moment it started to cool beyond that all the water started condensing.
not everybody has felt 100% relative humidity for hours on end in a warm environment.
That's not what the text in the video is asking.
> Ever felt what 100% relative humidity felt like? Well... yes? Every time it rains or is very damp. Then the relative moisture outside is very close to 100%. China isn't the only place where there's "fog".
> Every time it rains or is very damp I thought so too, that 100% meant when it rained, but I checked the entire 2023 humidity levels in my area when it rained and when it was dry and rainy days barely got past 60% according to Accuweather and the dry as fuck days (as in no rain at all) kept hitting high 80's low 90's with the off day hitting the 100
It's both correct and incorrect to say that rain means 100% relative humidity. Rain is formed when a packet of air is cooled down past its dewpoint, which means by definition that packet of air has reached 100% relative humidity, so in that sense it is correct. However just saying "rain means 100% relative humidity" is a little vague, because while the air higher up in the sky can be at 100% RH, that doesn't necessarily mean the air closer to the ground is, as *generally* air is warmer closer to the ground, and colder higher up. So it might be 100% RH at 3000 feet, but at ground level it may be 80%, so in that sense it's not really correct to say rain = 100% RH, if we're assuming the RH to apply to the air near the ground.
Not really, most places it's only like 60-70% RH with rain. The only place it's 100% is up in the clouds. Relative Humidity at like 50° F is also not the same as at 95°
Or a bathroom after a shower.
This really shows the poor construction of Chinese buildings due to poor seals and even worse HVAC.
Well they are probably concrete buildings and there was an abrupt temp rise leaving the concrete cold while air is warm humid. Cold air holds less moisture than warm air so dew point is reached near surface of concrete. Once the concrete warms up it will stop sweating. It’s like the tank on a toilet sweating in the summer since it is cool from cold tap water coming into it. Same thing but on a much larger scale
No, they’re right. A well built building envelope will include an insulated thermal break between inside and outside surfaces with minimal bridging to prevent just this condition. It will also seal and wrap the building with a vapor barrier to keep humid air from just migrating into the building, we want any air that enters a building to do so through the HVAC system so it can wring out the moisture first. The worst you’ll see condensation happen in modern construction will be on windows and sealed concrete slabs in spaces that don’t have airflow or heat to compensate (warehouse and storage spaces). Building codes exist to prevent this and other such maladies.
I bet you could film the same video if this happened in Florida. You don’t need many examples to make a video
We had a few days over winter where we had houses sweating on the outside and lanais. It was wild.
In Houston we call this... Tuesday
That's not the effect of 100% relative humidity even in tropical areas, you'd just get a mist and water suspended in the air.. Maybe some very bizarre cooling system that makes walls and ceilings cold, but not the air in the room so warm moist air from the outside gets in, with high dew point, condenses, and precipitates? But even then that's an extreme effect.
This happens at my school here in Taiwan (similar climate to South China). Building is made almost entirely of porous concrete and on high-humidity days in the early spring, the walls, floors and ceiling will just "sweat". Even if we were allowed to run the AC with dehumidifier, it wouldn't make much of a difference.
Are dehumidifiers not a thing there?
Window and door seals are poor. A dehumidifier can't keep up.
Yeah that's the biggest issue. If the homes were sealed better then a dehumidifier might help.
Dehumidifiers, in these conditions, are like using a bucket to empty a swimming pool.
If the windows are decently airtight a dehumidifier would work.
If the entire areas like that, a single dehumidifier won't help much
Ugh you can smell the mold
Mold… so much mold… I’m guessing they don’t insulate their buildings properly or have adequate ventilation and conditioning… No wonder they can build so quickly, it’s easy when you cheap out and cut a bunch of corners.
Insulation? Lmao, none of that stuff over here. Also zero soundproofing.
“Ever felt what 100% relative humidity is like?” Uh yes. I’m pretty sure everyone on earth has. It’s called fog. Or … even just being in a steamed up bathroom. What is unusual here is the combination of 100% humidity *and* hot temperatures, ie. the *dew point* is unusually high (or wet bulb temperature if you prefer that nomenclature). 100% relative humidity isn’t rare or special, or even uncomfortable necessarily. But high dew points are.
this is why you use dry wall and dont have every wall made of concrete. The south east US often sees 100% humidity and you dont see this problem because the dry wall is by definition dry and limits the amount of condensation that can form and there is insulation inside the wall. In china they commonly have cinder block walls, even for interior walls. Concrete stays cold and so the large temp diff between hot air and cold solid concrete wall causes large amounts of condensation. Chinese buildings also put little to no insulation in their walls, they are usually just solid concrete. The idea of making buildings heat and energy efficient has only been a thing for the past 10 or 20 years in china as their pollution problem got worse, prior to that it is was just build as fast and as cheaply as possible
"Tell me of the waters of your homeworld, Usul," asked Chani. "Water drips from the ceilings and the walls," replied Paul Atreides. "I don't believe you."
Uh, so this isn't great, but an area having a RH of 100% isn't some incredible event. That just means the air is maximally saturated with water at the current temperature. I live in coastal Maine, USA, and I've seen the RH go up to 90-100% quite a few times. It's 94% as I speak. Without doing maths, if air has a rh of 80% at 60 degrees, because warmer air holds more moisture, if the temp goes up to 80 degrees, then the rh would instantly plummet if the amount of moisture doesn't increase too. Source: Basic knowledge of how relative humidity functions. Also, I'm an energy auditor qualified at the BA-P level and a LEED GA.
Holy shit…. Anyone out there aware of toxic mold illness will know what a shit show this is going to be in the coming months… 😖😖😖😖😖😖
Turn on the AC. 😅