![]() ![]() “Real progress in solving outdoor air pollution problems will require reductions in emissions from the major air pollution sources,” Harley told MACH in an email, “such as heavy industry, coal-burning power plants, motor vehicles, and residential cooking and heating, especially if people are still using solid fuels such as wood or coal for those purposes. Robert Harley, a professor of civil and environmental engineering at the University of California, Berkeley, who was also not involved with the Xi’an tower project. There may also be more practical ways of mitigating air pollution, rather than building giant filtration towers, according to Dr. If the structure requires electricity from the grid that is fueled by coal, then operating the purifying system will itself generate harmful emissions. Xu, who wasn’t involved in the tower project, added that it’s important to take into account the energy costs involved with building and operating the towers. In addition to a proposed second tower in Xi’an, which would stand 984 feet tall, there are ongoing discussions about building massive air purifiers in the Chinese cities of Guanzhong, Hebei, and Henan, Cao told NBC News MACH in an email. Cao Junji, a chemist at the Chinese Academy of Sciences and the project’s leader, showed a 19-percent drop in PM2.5 over 3.86 square miles in the tower’s vicinity. It’s especially dangerous because these fine particles can be breathed deep into the lungs. 26, 2021 The Shanghai Tower, the world's second-tallest building in 2018, is 127 stories or 632 meters (2,073 feet) tall and is a premier Shanghai tourist highlight. One type of pollutant the prototype tower is designed to catch is known as PM2.5 because it’s made up of particulate matter no bigger than 2.5 microns in diameter. The Shanghai Tower China's Tallest Skyscraper Written by Gavin Updated Nov. Sunlight heats the air within the greenhouse, Pui said, causing it to rise through the tower, where a series of air filters trap soot and other noxious particles. Liu qiang / Imaginechina via APīuilt in 2016, the $2 million Xi’an tower, dubbed the solar-assisted large-scale cleaning system, stands atop an enormous glass-roofed greenhouse. “If we can just reduce the air pollution in major metropolitan areas by 20 percent, for example, we can save tens of thousands of lives each year.” The prototype tower in Xi'an cost $2 million to build. David Pui, a professor of mechanical engineering at the University of Minnesota and one of the researchers. Keeping those bad boys shut at night will buy a ton of time for help to arrive or sleepers to wake up from their smoke alarm and climb out a window.Īnd if you run out a door and no one is being shut in, close it behind you.“I like to tell my students that we don’t need to be medical doctors to save lives,” said Dr. Smoke is, by far, the #1 killer in house fires. My biggest tip for people is to keep all internal doors closed specifically at night. It's for folks who may not understand what a fire requires and how they can limit exposure to a fire writing off their home. Once there's a big hole allowing freer airflow to an interior space, such as through a ceiling, open window or open door, the interior is going to experience more of that "tinderbox" growth based on how much fuel is available midway up a wall. This doesn't apply quite as much when a fire is occurring in an attic as it will have ample oxygen and fuel. Some things to remember: the more internal doors which are also closed improve the ability to limit the spread of fire as it limits the vast amounts of oxygen required for rapid fire growth. You just don't find the same lack of care with petroleum based building products here compared with unregulated (by law or practice) markets. I'd say modern homes built in the US (not to suggest this doesn't apply elsewhere) are fairly good at limiting the internal spread of fire as long as external windows and doors are closed. Send us a mod mail anytime or head to our Discord linked above.įuck Steve Huffman and fuck the Reddit board.Messages should be sent as a modmail to /r/Videos. Simply deleting your post may cause the spam filter to catch future ones.Īlso, please contact us regarding spam, political or any other inappropriate videos, as this helps us remove them more quickly! When reporting, please explain why you think it should be removed.ĭo not message moderators individually about posts not appearing in the new queue or ban appeals. ![]() comments section), not the content you are linking). If your submission does not appear in the new queue, please contact us (be sure to include a link to the Reddit post (i.e. Moderation message the mods Removals & Warnings Watch more ads! Buy things from those ads! Buy reddit coins and reddit NFTs! Fuck karma, your value to reddit is based on how much you can consume. Reddit will be profit-driven until a profit is made.Videos must also not violate site-wide rules.Ģ. Our Other Subreddits Rules detailed rules 0. ![]()
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