1/26/2024 - TL;DW But I Read
The team behind the U.S.-based startup Harmony Turbines is hoping to popularize wind energy for the masses and allow them to have their iPhone moment.
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Unlimited Fresh Water?
*Topic : Technology
*Length : 15m 16s
*View : 605K
The topic of desalination is an important one that is only becoming more critical and could be a lifeline for huge area of the world. As well as looking at the breakthrough, this video also touches on classical methods (multi-stage distillation and reverse osmosis) and a case study of where this could be used, Kiribati.
๐ The new device could provide cheap fresh water from the oceans in times of hot sun and no rain, all at a cost below the average price of US tap water.
๐๏ธ Kiribati, home to over 100,000 people, is on the front line of rising sea levels and disappearing fresh water.
๐ฐ The environmental damage caused by historical mining has left some areas with no source of fresh water apart from rain.
๐ก MIT and Shanghai research team are working on solving the problems of salt accumulation and membrane clogging in desalination, potentially revolutionizing the game.
๐ง The movement of thermohaline circulation continually replaces deep water, moving marine nutrients and heat around the planet.
โ๏ธ The application of thermaline convection principles resulted in a device directly powered by the sun's radiation that produced high volumes of fresh water without accumulating salt that clogs the membrane.
๐ The vapor condenses and cools into fresh water in the bottom section, providing a potential solution for unlimited fresh water.
๐ The passive device powered by the sun with high efficiency and no sot accumulation for clogging is amazing.
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How We Solved The Home Wind Turbine Problem
*Topic : Technology
*Length : 16m 07s
*View : 499K
The team behind the U.S.-based startup Harmony Turbines is hoping to popularize wind energy for the masses and allow them to have their iPhone moment.
๐ก Residential wind has the potential to become as common and accessible as residential solar in the future.
๐จ New York, Minnesota, Kentucky, Texas, Oklahoma, and South Dakota have the โlargest economic potentialโ for residential wind energy.
๐ Creative engineering can truly shine in addressing the shortcomings of traditional horizontal wind turbines, making way for more effective and cheaper turbine designs.
๐จ "But if the majority of the United States, and the world at large, doesn't have good wind, shouldn't we try and make a wind turbine that can at least capitalize on that poor wind condition.โ
๐จ The design of the home wind turbine creates a low-pressure zone, allowing for more efficient energy capture from the wind.
๐ข By placing their devices along the front edge of a building's flat roof, Aeromine is using the building structure itself to effectively amplify wind resources, turning a traditional disadvantage into an advantage.
๐ Aeromine is planning to expand with approximately 10 pilot projects in production and a mass-market product set to be introduced in late 2024.
๐๏ธ Penn State University has been doing water tank testing for clustering effects, determining how to group turbines to maximize production.
Link:
Pop-up tents are weirder than you think
*Topic : Science
*Length : 10m 16s
*View : 1.3M
Pop-up tents are hard to put away. Find out how by understanding the maths and science of them.
๐ค The speaker finds it easier to understand and use something if they can figure out how it works and why it was made that way.
๐ It's interesting that a two-layered circle doesn't work well and always puts a twist in the band, while a three-layered circle can be created without any twists.
๐ Folding a pop-up tent involves twisting it into a flat profile, which is impossible with a metal band instead of a rod.
๐ Nitinol wire is incredibly elastic, deforming 10 to 30 times as much as ordinary metal and returning to its original shape, making it a strange material to handle.
๐๏ธ Setting up a pop-up tent is like twisting a rubber band, revealing a full twist in the rods of the tent.
๐ The multiple twists in pop-up tents make the packed downstate less stable, but they pop up more quickly.
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