Say Goodbye to Traditional Air Conditioning: Millions Are Turning to a Cheaper, Electricity-Free Cooling Solution

In an era where global temperatures are soaring, air conditioning has become a necessity for millions. But what if we could cool our homes without relying on electricity? Saudi researchers have developed a cooling system that works using just salt and solar energy. According to studies from King Abdullah University of Science and Technology (KAUST), this new technology promises to reduce our dependence on traditional, energy-consuming air conditioning.

With heatwaves becoming more frequent due to climate change, especially in areas with limited access to electricity, the search for alternative cooling solutions has never been more urgent. Over 700 million people live without electricity, making the search for affordable, sustainable cooling technologies a matter of urgency.

The team led by Professor Peng Wang has developed a system called Nescod, which stands for No Electricity and Sustainable Cooling on Demand. Unlike traditional air conditioning, Nescod works entirely without electricity, using the unique properties of ammonium nitrate to create cooling.

How Ammonium Nitrate Gets It Done

At the core of the Nescod system is ammonium nitrate, a compound commonly used in fertilizers. This substance has the remarkable ability to absorb heat when dissolved in water, a process known as endothermic dissolution. According to the researchers, when ammonium nitrate dissolves in water, it draws heat from its surroundings, resulting in a significant temperature drop.

Ammonium nitrate outperforms other salts in its ability to absorb heat. In experiments conducted by the researchers, a mixture of ammonium nitrate and water dropped the temperature from 25°C to 3.6°C in just 20 minutes. This makes it about four times more effective than other salts, like ammonium chloride.

Also, ammonium nitrate is inexpensive, easy to store, and widely available, making it an accessible option for regions where electricity is scarce.

A Solar-Powered Regeneration System

One of its most innovative features, according to research published in Energy and Environmental Science, is the regeneration cycle. After ammonium nitrate absorbs heat, the system doesn’t need electricity to reset.

Instead, solar energy is used to evaporate the water, which causes the ammonium nitrate to crystallize and regenerate for future use. This regeneration cycle allows the system to be reused continuously without needing an external power source.

The environmental benefits of this solar-powered regeneration are impressive. As the water evaporates, it can be collected using solar distillation, making sure no water is wasted, transforming the way we think about air conditioning.

A Promising Solution for Global Cooling Needs

The global demand for cooling is growing rapidly. As mentioned in an International Energy Agency (IEA) report, air conditioning already accounts for about 10% of global electricity consumption, and this number is expected to increase in the coming years. In countries like Saudi Arabia, where a huge chunk of electricity goes to air conditioning in the summer, Nescod could help cut down on energy use and lower carbon emissions.

This new technology is especially useful for people living without electricity in hot climates. Nescod could really improve life in areas that don’t have reliable power. It could be used in many ways, like cooling buildings, preserving food, and storing temperature-sensitive items.

If scaled up, this system could transform the way we manage heat, especially in regions where both energy and water are limited.

Enjoyed this article? Subscribe to our free newsletter for engaging stories, exclusive content, and the latest news.