Scientists have developed a material to reduce indoor temperatures through radiation cooling that works effectively even during the day…
Researchers around the world are now actively looking for ways to cool buildings that do not require the use of electricity. One of the criminals. radiation cooling, which allows you to reduce the temperature in a room by reflecting sunlight and emitting some of the heat in the atmosphere. Despite the effectiveness of this technology, it is still difficult to apply it for cooling large areas..
However, a team of engineers from Pohang University and Technology found a simple solution to implement a radiation cooling system. They found that porous anodic aluminum coated with a thin film of silicon dioxide exhibits a strong cooling effect even in direct sunlight..
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Experiments show that such a structure has a reflection coefficient of up to 86% in the solar radiation region and up to 96% in the atmospheric window (8-13 microns). The new material kept the indoor temperature at 6.1 °C below even during the day.
Radiation cooler invented that works efficiently even during the day
Recall that earlier scientists also developed paint that can cool buildings, reflecting up to 98% of incoming heat..
text: Ilya Bauer, photo: POSTECH, hitechphoto