I was going to say the paper but you’re absolutely right
I was going to say the paper but you’re absolutely right
Darth Tenebrous
I know I’m not the target audience, but when I’m at home I rinse my stick
Its abundance of sunlight and heavy investment in solar cell technology has positioned Saudi Arabia well in its transition to becoming a leading exporter of renewable energy. Indeed, solar energy currently makes up more than 80% of the Kingdom’s green energy capacity. However, these cells bring a twisted irony, as their operation exposes them to overheating risks. Cooling systems are therefore necessary, but many depend on electricity.
An international research team led by KAUST Professor Qiaoqiang Gan has designed a potential solution. Their device needs no electricity, as it extracts water from the air using nothing more than gravity and relies on cheap, readily available materials.
Along with keeping the solar cells and other semiconductor technologies cool, the water can be repurposed for irrigation, washing, cooling buildings on which the solar cells are placed, and other applications.
Scientists estimate that the atmosphere contains six times more water than all the fresh water in the rivers combined. “This water can be collected by atmospheric water harvesting technologies,” says Gan.
While these technologies work reasonably well, in arid environments like that of Saudi Arabia they require electricity to harvest practical amounts of water. This demand risks deterring the adoption of solar cells in rural regions of the Kingdom, where electricity infrastructure is costly.
One reason for the low efficiency is that the water adheres to the surface of the harvesting device. Professor Dan Daniel and Shakeel Ahmad, a postdoc in Gan’s group, found that by adding a lubricant coating that is a mix of a commercial polymer and silicon oil, they could collect more water by relying on only gravity.
“A common challenge in atmospheric water harvesting systems is that water droplets tend to remain pinned to the surface [of the device], necessitating active condensate collection. Our coating effectively eliminated pinning, enabling true passive water collection driven by water,” says Ahmad. “Since this system operates entirely on passive radiative cooling, it doesn’t consume any electricity.”
The solution is based on previous technology made by Gan, which he describes as “vertical double-sided architecture.” That system was originally designed to reflect thermal heat back to the sky to keep the solar cells cool but not to capture the water produced.
The new device was tested six times over the span of a year in natural conditions in the town of Thuwal, about 100 km north of Jeddah, and could almost double the rate of water collection compared with alternative atmospheric water harvesting technologies.
Along with Gan and Daniel, KAUST Associate Professor Gyorgy Szekely contributed to the study, which was published in Advanced Materials.
Along with the efficiency of the water collection, Daniel is equally excited about the economic benefits of adoption.
“The system doesn’t consume any electricity, leading to energy savings. Moreover, it doesn’t rely on any mechanical parts like compressors or fans, reducing the maintenance over traditional systems, leading to further savings,” he said.
Yeah haha, and have been back since to get a degree and hated it just as much. Really affirmed the choices i made as a young man.
Never have i ever been between jobs since starting work after leaving school
Didn’t Massachusetts Montana or something leave Harris off of their early voting card?
https://apnews.com/article/montana-electronic-ballots-kamala-harris-7b6e178c32db2d14871d333e4af14c15
That’s awesome, America is up there with Zimbabwe for rigging elections
We have this still where I live. Was just this weekend gone in my neighbourhood.
Last week it was the rich neighbourhood and the council was there stopping people from taking anything saying that it all belongs to the council.
Dann rich fuckers get extra protection for their rubbish mean while our houses get broken into and cars stolen constantly
Yeah fucking MSFS2020 was such a bust for me living in Australia. It took days to download then I finally got it working something went wrong with install files and had to dick around. In the end I played 3 hours of it but have hundreds in download time.
Fuck MSFS
When I was learning to ride, my dad bent mt training wheels up so the bike would still turn and the wheels would only touch if you started to fall over a fair way.
Now just edit your post to “Sorry this post has been removed by the creator”
Yeah, it’s great being on the out side looking in
God
If he’s real (I don’t think so)
If you flew frequently you would understand
So once or twice a year?
I’m talking monthly or every couple weeks
Where are you flying that you’re doing 14 hours frequently?
Do line up window middle isle front to back.
Don’t dick about in the aisle
Do sit down and stay seated
Don’t recline seat ever. You’re just fucking up the person behind you
Do leave both middle arm rests free for the poor bastard sitting there
Don’t leave the window shade open if the sun’s beating in.
Yeah solid video watched it the other day.
Thankfully I also live in a “first past the post” country that forces a two-party system and penalizes voting your conscience unless it aligns with one of those parties. While there may be flaws in Ranked Choice Voting that could emerge in fringe cases, it is so obviously superior to our current system that it is hard for me to worry too much about the nuance of how it might not be 100% perfect 100% of the time. Any (democratic) system is better than what we have now.
Simon? Simon whistler?
Wait no, Michael