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A new material achieves cooling without expending energy

2024-08-04 20:11:29, Tech CNA

A new material achieves cooling without expending energy

A company in California is producing a material that can achieve cooling by conducting heat into space. VOA correspondent Matt Dibble details this new energy-efficient method.

At first glance, they may look like solar panels, but the system being installed on the roof of this shop will work quite differently. By sending the heat into the space, it will help cool the store.

The technology works by "radiative cooling", a natural phenomenon that does not require additional energy.

During the day, the sun's heat is mostly absorbed by objects on Earth and the atmosphere. But some of its infrared remains going into cold space.

The layer covering these panels is designed to eliminate residual heat.

"It means to identify the infrared or thermal energy of an object and send it to the atmosphere through radiation", says the CEO of the company SkyCool Systems that realizes such a thing.

The panels contain a liquid, which this layer cools to almost 5 degrees Celsius, says SkyCool, a company in California.

"It's a relatively long arc, and this layer cools the fluid as it circulates," says Joel Rinsky, Vice President of SkyCool Systems.

Cold liquid is sent to the building's cooling system to increase efficiency. The only energy this process uses is that of a small pump to circulate the liquid.

"SkyCool systems save a store owner 15 to 20% on air conditioning costs."

Refrigeration technology can have many uses. A project in India installed it in vendor kiosks, lowering the ambient temperature and keeping fruits and vegetables fresh.

The company is also working on a material for buildings in developing countries that do not have air conditioning.

"If you can cool those buildings without electricity, without water, and provide comfortable conditions inside, that has the potential to save lives, and dramatically increase productivity around the world."

Taking advantage of an exit to space, to cool a planet that is getting hotter and hotter./ VOA





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