For decades, air-conditioning has been the answer to increasingly hotter summers in developed countries around the world, but now China is trying new ways of lowering temperatures in its overcrowded apartment complexes, and one such attempt is getting a lot of attention on social media.Dubbed “rooftop rain,” the innovative urban cooling system has reportedly been implemented in Yuncheng, a city in northern China’s Shanxi Province, where several high-rise apartment buildings were fitted with rooftop misting systems that spray a fine mist of water into the air. This allegedly helps lower the temperature around the building by up to 8 degrees Celsius.The rooftop rain system is based on a scientific principle called evaporative cooling. The high-pressure nozzles on top of the apartment buildings spray extremely fine droplets of water into the air, and as these droplets evaporate, they absorb heat from the surrounding air, cooling it, in a way that isn’t too different from how sweat cools down our bodies.https://www.youtube.com/shorts/n2MLXCfQG4khttps://www.odditycentral.com/videos/chinas-rooftop-rain-urban-cooling-system-goes-viral.html
It’s important to note that the system is designed for very hot days, as the water sprayed from the top of the buildings needs to evaporate in contact with the hot air, instead of pouring down like rain on passers-by below. So maybe “rooftop mist” would have made a lot more sense.This intriguing cooling system recently went viral on platforms like Reddit and Instagram, leaving millions of people wondering why it isn’t used on a wider scale, especially considering the heat wave ravaging Europe and North America right now. It’s a legitimate question, but there are a few things to consider.While it does look (and probably feels) cool, the rooftop rain system is still a bit of an enigma. No one really knows how effective and efficient it really is. How much water does it require in order to cool the air on a large scale? Do the spray nozzles get clogged up by mineral deposits? What about the indoor temperatures in these buildings, does it drop significantly as well?There are still a lot of things we don’t know, but China has reportedly installed rooftop rain systems in several cities, so there must be something to it.
China has major water problems for sure. Beijing is sinking 4cm per year due to aquifer depleting and the Gobi desert is now 50 miles from downtown. Bad situation.
>>538292364>Beijing is sinking 4cm per yearfr? sauce link?
>>538292578>Beijing is sinking 4cm per year>Recent studies have revealed that nearly half of China’s large cities are sinking at rates that can exceed several millimeters annually. The situation is particularly dire along China’s eastern coast, where cities like Beijing and Tianjin are grappling with the combined effects of groundwater depletion and rising sea levels.https://glassalmanac.com/half-of-chinas-cities-are-collapsing-whats-really-happening/
>>538292170We tried this with a sprinkler on our roof because running the ac was too expensive, and it works.
>>538292364There is this dude who won nobel prize, he created the shit that could pull water from the air. Very good, effective and efficient. We should do that on a massive scale. A container sized water pulling machine can make enough water for a village.
so now you get heat plus humidity
>>538294424Nah, retard.A significant chunk of the heat will be "wasted" and converted into evaporating the water. Leading the humidity into the atmosphere, away from the city.
>>538293460damn i wish we could blow up the 3 gorges to really gut that shithole, thanks anon for the source link
>>538295456no, retard, you've just made things a lot worse
>>538295656The anglokike dreams about war, misery and destruction every day.
>>538295815>no, retardNo retard. It actually costs heat to evaporate water.
>>538295849It is telling that the narrative on this board is that America is mostly shitskins, but anyone who says something shitskins don't like on this board must be white.
>>538292156Now it's hot AND humid, amazing.
>>538295918>pic relatedIs this the person you called an anglo in your last post?
>>538295918you're tripling down on your stupidity
Neat idea but those buildings will be covered in moss and mold pretty quickly.
>>538296157The evaporation actually floats upwards, away from the city.
>>538292156I do this every summer when it gets too hot, put the sprinkler on the roof. It works okay
>>538295815If there's no breeze you are correct
>>538295849what do chinks dream of? walking into their home one day without scanning their face? having a 2nd car w/o using political favors? having a home that isn't made out of leftover amazon packing material?
>>538292156We can't have that here cause of NIGGERS
>>538296076you dont get heat stroke in 30C weather with 50% humidity, but will in 40C dry weather
>>538292156NUMBER 11 CRASH AND BURNCHINKS ON SUICIDE WATCHhttp://www.google.com/search?q=china+collapse
>>538292364they're damming the Himalayas to divert water from India to China, they'll be ok.
>>538292156Ah, it makes sense now. Change the climate in order to force people into cities to survive. Starts with this, ends when independent life is impossible. Smart.
>>538296268>without scanning their face?Glownigger mutts are seething on the internet because the cameras always keep an eye on them.You're assblasted because you can't subverty asian countries in peace huh?
>>538296279
>>538292170damn, China's so basedthey spray water off their buildings...off their bridges...where next?
>>538296210I'd be interested to see how it actually works. I used to live in China and was in some cities that where so polluted that if they did this there would be black rain falling from these buildings.
>>538296400>pic relatedis this the person you called an anglo in your last post?>>538295849
>>538296355The jeets won't be, which means humanity will be ok
fucken chinathey probably use sewage
>>538296400and you're forever frustrated by your 3" micropenis. hopefully you'll have enough posts with engagement in this thread so that you can get the premium bugpaste for your government issued instant ramen
>>538292156>>538296157>covered in moss and moldDo you want Legionnaires' , because this is how you get Legionnaires'
>>538292156The problem is calcification deposits on the windows over time.
>>538296540Glowmutt is seething so much, he started rambling incoherently now.
>>538294179>Memeflag discovers the dehumidifier
>>538292156This is retarded. If you want to cool with water it needs to evaporate off of the building. Even a kid could see this is stupid. Try staying in sun and using a spray water squirt not on your body but away fron yourself. Extremly stupid.
>>538292156Chocolate Rain wen?
>>538296644and you make what exactly, cloaca?
>>538296616>rambling incoherentlylol can't formulate a reply, you got told subhuman
>>538292156>china>increasingly hotter summersstopped reading right there. nothing but propaganda follows either of those 2
>>538294179luke skywalker was a moisture farmer on a planet called tatootine
I don't know why passive haus tech isn't used anywhere. It's pretty simple; >Face the building windows primarily toward the equator>Don't put any windows on the side facing away>Put very small windows east and west>Include some thermal mass in the walls, thick concrete does just fine>Make sure the building is airtightAnd that removes most of the issues. If the buildings were just designed differently they could remove an incredible amount of the burden placed on HVAC.
>>538292156>legionaire's disease teleports into your lungsHeh nothing personal kid>>538292364Also this and how outrageously expensive it would be to treat water with chlorine and pump it up 40 stories into high pressure nozzles for 100m radius localized cooling that is probably more like 2°C after removing chink propaganda bias
>>538296616you china numba 1 fags always come off as such retards, explain how your humidity only goes upwards at least thatll be more interesting than your sloptier insults
>this is so much heckin better!In an alternate timeline, this is the main source of urban cooling and faggot liberals would be pushing for "greener less wasteful electric cooling units"Same with gas v electric carsFuck these people give them nothing
>>538296739Lol, this anglomutt will be seething for the rest of his existence.
>>538296967Hot air rise upwards and brings humidity with it.
>>538292156Once again it's the appearance of something. Adding cool water to warm air will cool it in the short term, but after a couple hours all you've done is make a hot dry day a hot humid day. You know it's true because of physics.
>>538292156Sewage has historically been a valued resource in the arena of Biological Warfare.These-days its nano-technology.Great prototype for a Mass-Gassing Exploit?
>>538295918>It actually costs heat to evaporate water.That's a common misconception.Evaporation just separate the hotter molecules from the colder molecules in the Maxwell-Boltzmann velocity distribution.The water gets colder but the air gets hotter.No heat is added or subtracted.
>>538295849one would think you knocked the niggers cock of their mouths, they pissed anon.
>>538297094we got that temu air in texas, if i walk outside right now itll be a sauna, so i guess for your roofwater to work it needs to be super dry heat and probably no wind? if it works it works i guess
>>538296304Huh? Humidity prevents sweat from evaporating and cooling your body, that's why they invented the "heat index" because humidity makes you feel hotter because it inhibits natural body cooling. You need to stay hydrated in both circumstances.
>>538292156Misting systems are great, good for china
>>538297237>The water gets colderNope.You can try with alcohol on your palm. It's your palm(the building) that feels the sensation of cold, your palm feels coldness because it delivers heat(energy) to the alcohol and evaporate it.Fucking europtards can't into basic physics.
>>538295815Do you seriously not understand that water absorbs a significant amount if energy, esp. during liquid to gas phase transition regimens?
>>538297101It's also possible it causes an updraft because humid air is lighter than dry air.But I don't know what good that would do if any.
>>538293460Fake… if “rising sea levels” is seen in any text. It’s fake
>>538296268I get what you mean but holy shit, if you even slightly still support trumpists and oligarchy you have no leg to stand on re. surveillance
I've had a mister installed before.It just makes everything humid. It feels fine for 20 minutes then it starts getting hot and humid.
>>538292156LOLThat's a giant "swamp cooler""At least it's a dry hea-ack!!"
>>538297455hot dry air + water = hot humid air
>>538297430You're not disagreeing with me.If you're TOUCHING the liquid you will feel the cold, yes.Like I said the liquid gets colder.But they're just spraying the water into the air.
>>538292156cool idea
>>538297456It's like what we call a swamp cooler. Which only works in small indoor areas and even then, it doesn't really work. It's the exact same principle.
>>538297582You have to keep MOOOOOOSTING which requires pumping energy and water.
>>538295815>>538295918>It actually costs heat to evaporate water.Yes, that is how sweat worksBut, now, sweating doesn't workYou got fucking WET BULBED, bitches!!
>>538292170>>538292156So it's changs trying to psyop everyone into thinking a mild summer is somehow a dangerous heatwave? What's your endgame?
>>538297430I live in Florida anon when it rains here and sun comes back out it’s 5 times hotter
>>538297627>Like I said the liquid gets colder.The opposite, when your palm deliver heat/energy to the alcohol, the alcohol will not get colder.
You can buy misting systems at Home Depot. Most people don’t know they exist outside of hot areas. I’m in a hot area and also use swamp coolers. Similar idea, misting works better
>>538297237>cold doesn't exist, it's just the absence of heat!
>>538296542>Do you want Legionnaires' , because this is how you get Legionnaires'Plus, create a nice greenhouse effect
>>538292156it's not like water is in short supply or anything due to AI right?
As an American I hate this because it would make it just a tiny bit nicer but that's bad for everyone and makes them lazy communists living a life a leisure of a rich mans work.
>>538297839I forgot the picture. My post is ruined.
>>538296592>The problem is calcification deposits on the windows over time.On everything"China too white"
>>538292156Look bud, after what China did to the whole planet, I don't want anything to do with anything out of China, that is " viral ", ever again. You dig?
>>538297720On a molecular level temperature is just the average speed of the molecules.Note that this is an average speed because you'll always have faster and slower moving molecules.Evaporation happens because the faster moving molecules have enough kinetic energy to break free from the liquid and enter the air.For water those molecules need to have a speed equivalent of 100C or more.So you have fast moving molecules "at >100C" exiting the water lowering the average speed of the water and thus the temperature.
>>538297839>>538297921I might look like that but I'm not wrong.There is no "cold" just molecules moving at different speeds and bumping into each other.
>>538298087Makes sense.The reason why I had the other impression is because all of the alcohol in my palm evaporated.
>>538293580Maybe this is how the data centers can dispose of the water they plan to use, instead of dumping hot water back into thd environment like they do now, which makes the waters too hot, and kills off the natural flora fauna and bacterial life.
>>538292156Id design vaccines and drugs to put in these to keep the population docile and complacent. Perhaps even nanobots since they just cracked 0.7 microns.Imagine some fat peter thiel oligarch middle management goon informing you after a bite of a new mcdonald amazon goybar:“We can take your most memories by sending the robots inside you to physically destroy entire sections of your mind… Maybe we mess with your gaba production…imagine a constant panic attack…? Or other neurotransmitters? Perhaps we target your motor function and slowly stop you from being able to move anything? Or we can just tell them to begin eating away, albeit slowly, parsing targeted areas by neural activity, essentially meaning we use heatmaps to eat your brain when you are trying to think of something positive or balance yourself. Your life is forfeit. You are a data point now. Your new job is working in the human slaughterhouse/content farm in new israel, or we turn you off. Get going goypiggie.”
>>538298361Most data centers already do that except inside a cooling tower which is really just a sprinkler with a fan.Other do pump hit water into a lake or sea/ocean.But that requires being close to such a large body of water which are usually more expensive locations.Pumping hot water into a river will usually cause environmental damage but the ocean is fine.
>>538292156why not just not have overcrowded apartment complexes?go to war and reduce space needed, that's one of the many benefits war provides
>>538292364Well, hey, Iran fixed that for Tehran so I'm sure it'll be just fi- they didn't? Oh. Oh dear.
>>538293580what you did was cool down the roof, which brings down the temp of the attic (or diminish the transmission of heat from the roof to your living quarters, if you don't have an attic), which lessens the rate at which your indoor air is heated (and allows the indoor air to cool, which is a separate but closely related piece of the puzzle).your method is more effective for indoor cooling than what the Chinese are doing here with misting.glad you got some relief
>>538298687Idk how data centers do it where you're from, but here, they dump all their over heated water back into the ground or into lakes, rivers and streams. And it makes the natural life there, impossible to survive.This is one of the many problems Americans have with data centers, and why we don't want them built.I guess the mega wealthy people who want the data center to be built COULD mitigate our concerns, by building responsibly. But, they obviously don't feel like it is worth it to do.
>>538298700>why not just not have overcrowded apartment complexes?Because then you need loads of super wide roads and huge amounts of cars and parking spots for those cars.High density housing next to industrial areas is the best way to get workers to your factories.It's how China managed to keep a manufacturing industry whereas America with its urban sprawl can only have a service economy no matter how hard MAGA's cry.
>>538292364>the Gobi desert is now 50 miles from downtown.Everyone in this thread can just ctrl+t to google maps and look at a satellite photo. Why bother with such an easily disprovable lie?>Beijing is sinking 4cm per year>The SAR dataset used in this study consists of 41 images from Envisat-ASAR acquired from 2003 to 2010 and 14 images from TerraSAR-X (TSX) acquired from 2010 to 2011>Comparisons between InSAR and GPS derived subsidence rates show an RMS difference of 2.94 mm/year with a mean of 2.41 ± 1.84 mm/year.>2.41 ± 1.84That's .57mm/year. And the study doesn't explain how they accounted for change in city skyline.
>>538299214China went deep on being as car-centric as America, so that's a no-go. I'd say even America has a better chance of getting back to walkability, since we've had time to get sick of it, so there are at least some people here who want walkability back. Chinese don't know what they're passing off.
>>538294179>Coastal city in arid climate should use a dehumidifier to water 1 Billion peopleTurn off your memeflag and turn on your brain nigger wtf
>>538298284The alcohol took energy from your palm making it cooler. The other thing is that water has a very high heat capacity but also vaporization enthalpy, which means it takes a lot of heat warm up water and then bump water over the threshold to make it evaporate. Alcohol might be different. This all works because your body is hotter than the room temperature water and also the fact you don't need to be at boiling point for some of it to evaporate, evaporation rate increases up to boiling when you need to input that extra heat to get it all to instantly evaporate.
You gotta hand it to China, when they want to do something they just do it. Like terraforming their desert. In the West we have to ask, "How is this profitable for the pedophile oligarchs?" before we do anything close to this. In China they execute pedophiles and corrupt politicians so they can have cool stuff.
>>538296347>(((Experts Say)))As if posting any media headline has any power here. Everything you see in print and from a major "news" source or aka Jewdaycare for writers has been edited and curated to the point that they should be paying you to read it.
Why don't you guys buy an ad to make these AI posts, chinks?
>>538300955LOLChinsect Chinky has little dinky
It's a swamp cooler. Patio-scale ones are common here, they work well when it's hot and dry, but just make things worse when it's hot and wet. In a city the humidity level will gradually rise the longer it's run; great for taking the edge off a heatwave, but not an all-summer solution. You still need AC.
>>538300955Emigrate to Wuhan if you love the disease vector of the planet so much, you nigger.You think CCP China will give you citizenship there no problem? Then try it.
>>538296279Literally anywhere there is lower humidity, this is how things are done in the US. Swamp cooler, pad/fan cooler, evaporative cooler, doesn't matter what you call it. It's not some secret new science. It uses energy to change state from liquid to vapor. Basic science. It does not work where it is humid though as very little will evaporate. You may get some cooling just from the water temp being cooler than the air temp though as you get "rained" on.
>>538299499What is currently preventing you from taking a walk? You need the givernment to pat you on the head and give you good boy award for walking somewhere? If you want to take a walk, then just do it, nigger. Damn.
>>538294179Was his name Owen Lars?
It works until the humidity is already highTho I guess it could be worth it for reducing the burden on the grid
>>538300955>Terraforming desertIt was already done a century ago. It's called southern California
>>538302341And it goes right back to desert once you stop watering it.
>>538297502Sure but when you suck all the water out of the ground the ground does sink. Yanky doodles have the same problem they pump and pump and everything sinks and the ground water is fucked forever.Funny stuff.
Think about all the work pumping that much water up that many floors.
>>538292364>Retard American never heard of the two absurdest rivers in the world
>>538295656>boomers live in the past
>treat water to drinkability>spray it from the roofslol genius
just install AC bro
>>538296041I would shoot you in the fucking neck
>>538301959Retard.
>>538292170If heat from the rooms could be directed to a radiator and the water could rush through those radiators, when you could cool both the inside temp and then add humidity to the outside air.
>>538292156what an inventive way to spread Legionnaires disease.
