Researchers in Saudi Arabia have developed a cooling system that works without electricity by using salt and solar energy.
The technology was created by a team at King Abdullah University of Science and Technology (KAUST) and is designed to reduce dependence on conventional air conditioning systems.
Developed for rising heat and limited power access
Global temperatures continue to rise, while heatwaves are becoming more frequent.
Researchers said the need for alternative cooling systems is growing, especially in regions where electricity access remains limited.
More than 700 million people worldwide live without electricity, increasing demand for affordable and sustainable cooling solutions.
Nescod system uses ammonium nitrate
The system is called Nescod, short for No Electricity and Sustainable Cooling on Demand.
Instead of compressors or electric motors, it relies on ammonium nitrate, a compound commonly used in fertilizers.
When ammonium nitrate dissolves in water, it absorbs heat from the surrounding environment through a process known as endothermic dissolution. That heat absorption creates a cooling effect.
Strong cooling performance in tests
According to the researchers, tests showed that a mixture of ammonium nitrate and water reduced the temperature from 25°C to 3.6°C within 20 minutes.
They said this made it around four times more effective than other salts such as ammonium chloride.
Researchers also noted that ammonium nitrate is low-cost, widely available, and easy to store.
Solar-powered regeneration cycle
After the salt absorbs heat, the system can be reset without electricity. Solar energy is used to evaporate the water, allowing the ammonium nitrate to crystallize and regenerate for future use.
This enables repeated cooling cycles without an external power source.
Researchers added that evaporated water can also be collected through solar distillation, helping reduce waste.
Potential global uses
Cooling demand is rising rapidly worldwide. The International Energy Agency has said air conditioning already accounts for around 10% of global electricity consumption.
Researchers said the Nescod system could help lower electricity use and reduce carbon emissions in hot countries where cooling demand is high.
They added that the technology may also be useful for preserving food, cooling buildings, and storing temperature-sensitive goods in areas with unreliable power supplies.
Future potential
If produced at scale, researchers said the system could offer a practical cooling solution in regions where both electricity and water are limited.
This is a dehumidifier. It’s been done numerous times. Solar is still electricity Mr afaq .
You claimed it doesn’t use electricity. So what’s the point of solar energy ? That’s electricity.
I hadn’t upset the bots apparently you guys have never opened a science book in your life lol
Availablity and price plz!
It doesn’t exist. It’s just a claim by the university project.
It hasn’t been used in production
A science lesson for everyone here.
Global temperature rising CANNOT be stopped. Why ? Bcz oil and fossil fuels are used. They emit carbon oxide into the atmosphere creating more heat. It’s a 1 to 1 ratio. All that carbon was trapped inside the fuels we use. Now it’s out.
To bring the temperature back down you have to plant trees so they can capture all the carbon.
Cooling is just absence of heat. To need to transfer all that heat somewhere to get cooling. That can either be done through convention (solid conduction like ice) or convection(liquid cooling like ac or fridge).
To bring down temperature, you need to plant trees so they can take away huge parts of co2 or of the atmosphere and trap it inside their body. That’s why temperature used to low before.
Due to high usage of fossils and roads and give cities, the heat is rising.
It’s going to take 90 years to do this if you try it now btw. Trees don’t grow in months but take years.
Before anyone asks why I mentioned trees, it’s bcz they trap all that co2 to decrease the temperatures. That’s just how it works. Plant bodies consume co2.
Co2 is one of the primary reasons for global rising temperatures.
All that heat needs to be transferred somewhere. The only place is inside the earth as was done millions of years ago by nature. That was due to decay into oil, treestv and trees and forests.
And this has to be done globally. Not just pakistan. Even then you are looking at atleast 80 to 90 years even if you tried this globally today.
Trees do releases co2 at night too. Trees stops flooding, helps in rainfall, provides shade. we have to to focus on that how can we stop ozone depletion as many paints etc and industrial waste causes ozone layer to deplete
No not really. Trees absorb c02 and release oxygen.
They don’t stop floods but slow it down. They do help rainfall through providing moisture.
My full explanation was censored by this platform. Apparently science required moderation lol
Nature spent millions of years removing carbon from the atmosphere and “trapping” it in the Earth as fossil fuels. By burning them, humans have re-released that sequestered carbon in just ~150 years, overwhelming the natural carbon cycle.
This is the reason for high temperatures and extreme heat.
Until all that excess carbon is not sent back into the earth. You will experience high temperatures no matter what you do.
It’s just bcz basic physics. 1 litre of fuel gets you nearly 3 kg of co2 , the primary cause of rising temperatures.
So no new tech will stop it.
So assuming greta becomes world boss and we switch to electric and wind power stop fossil emissions AND plant trees across the planet it will take a hundred years to bring us back to normal….
Who told you that ? Greta is an activist. Not a climate scientist. Ever heard of Peter Hatfield? He’s on youtube btw.
Although he is atheist and I am muslim. But we both agree on science.
Bcz laws of nature created by God are absolute. You can’t break them even if you tried. There is always a trade off.
Science is not Greta or trump. Science showed we need to move away from using fossil fuels. It increases temperature by releasing carbon into the air. Which increases temperatures.
That heat needs to sent somewhere to bring the temperature down again. Oceans absorb some of it. But the best way is through trees and forests and cut down emissions.
I am glad we have solar and wind which are more efficient and better then oil.
AoA! I don’t think the writer of the article, or the university students who did this project, ever claimed this thing that you are mentioning, i.e., the reversal of the over-saturation of CO2 due to industrialization by humans over the past one and a half century. What I, as a reader, got from the article was simply a cheaper alternative to electricity, to be used for cooling purposes, that uses a cheap salt and a relatively inexpensive method to produce cooling. The difference in the overall cost of the two systems would be very significant. And the part that solar energy was playing here was just that of heating the water enough to boil and evaporate it, so that the salt would be recycled and reused. This suggests a partially self-sustained system which would, in turn, reduce the overall cost of the system even further.
Of all the readers who have commented on this informative video, I think you are the only person who clearly understood the gist of the message and explained it precisely.
Hi miss. Kindly know you’re wrong.
Kindly know that is false. The article and the project statement is simple
“Global temperatures continue to rise, while heatwaves are becoming more frequent.”
This is written in the article. The heat waves and temperatures rise due to the very business ksa is in. Though I understand their need. But also the trade off is ignored.
Not to mention the article itself is factually incorrect.
How would you use this cooling system as you need something to absorb the heat ?
Where is the cold air going to come from ? Either you have to use pump or you can’t.
If you heat the water. Won’t that increase heat inside?
And what are you even going to use to heat it ? Solar how ? Going to place the apparatus outside the house or floor ? That would take alot of time .
We use compressors and motors to produce energy and produce cool air.
Without a power source , how are you going to get cold air ?
The test was done to water only. Last time I checked , we need cold air not water.
See how many things were ignored
If its feasible and economical, it should be made available for all to save Mother earth
Doesn’t work. Hate to break it to you.
Laws of physics
Excellent, but external source is using here as Solar Energy Indirectly
Excellent Effort that’s Good. But, here External Source is Being Used as SOLA ENERGY to evaporate water from ammoinium nitrate salt Solution to become crystals of salt.
Read these research few years back. Don’t know when it will be implemented.
It can’t since it doesn’t work on commercial scale and won’t help.
All is well
I am interesting all is well and good to do work at my support thank you very much
I can make a cooling system works by almost 12v dc and decrease the room temperature around 30-40 °C or increase it about 50°C in the same time with a 250$ cost for build it … incase of there is anyone want to investment in this idea he can contact me
Eveporative cooling system is long being used in the Arab world, even for cooling the entire hotel buildings.
Another building was recently made in an African capital, using ‘ant-mounds’ based technology, that keeps the building at a constant convenient temperature of 76 degrees F, without using ACs.
The mafias will not allow to get it popular. But it must be popularized.
It won’t get popular since it doesn’t work lol . Where are you going to pump air ? You’ll need electricity to pump warm air through it. That will raise the temperature
Now what will you use to take out the hot air inside ?
And what source of energy will you use to power the cold air to enter your home ?
Kindly learn about heat convection and conduction. It’s basic physics.
Crude oil is not fossil fuel, neither anything to do with organic substance and dead dinosaurs, its the captured pollution and co2 that trees filtered and sent back down inside earth and created atmosphere for life to sustain millions of years ago and still doing the same, we pump all that out and put it back in atmosphere… Imo clean energy is the only way and oil is not going any where any time soon….
Crude oil is fossil fuel. You literally described it just now. Plants animals all life forms became fossils. Hence fossil fuel
But unfortunately Ammonium Nitrate is highly explosive that’s it’s use as fertiliser in Pakistan and in many other countries is prohibited It’s production and supply to general public is limited
What about rainy season when humidity increase the temperature.