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 I just searched him up on YouTube and gave him a sub.
It concerns me though what second wind is going through though.
I only watch cold take, fully ramblomatic, and design delve. I will watch them anywhere though.
Edit…
https://youtube.com/@theotherfrost?si=zTlbND31qtQtALfy
Link to frosts personal channel
Player count for a game like this doesn’t matter.
It isn’t a greedy corpo product that needs to farm engagement to fleece every cent from its players.
It’s one time purchase, I wish gamed journalism’s would drop the bullshit player counts matter for every game.
Even after no one is playing BG3 anymore they still made their money and have no more ongoing costs.
Not like fallout 76 where it costs them daily to maintain servers etc. Then it matters
Have you got Oracle of seasons? I had both when i was younger. They’re awesome games set in the same place but slightly different.
When you beat one you get a ring code so you can take stuff into the other version of the game too.
Ages was more puzzles from memory and seasons was more fighting oriented.
I have such fond memories of them both
Hey foxhole is a great one, but it doesn’t have the bar i guess.
But chilling collecting b mats and making shit are great places to have chats