The world's most mysterious solar panel: with heating and air conditioning

The Kuuler company has developed passive radiation cooling technology. The goal is to significantly reduce the cost of cooling solar cells, writes ecoticias.com. Kuuler technology uses the reflection of sunlight in the visible and infrared spectrum (7-10 microns). Its infrared radiation passes through the air without heating it, which improves heat transfer and makes it possible to cool the painted surface below the ambient temperature. The effect is achieved using BaSO4 (barium sulfate) molecules of a certain size.

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It should be noted that this technology has three key elements. The first — it is a paint with a low level of light absorption. The second — lightweight structure that can be installed on the roof. The device has a fluid (water) inlet where the temperature of the fluid is higher at the inlet than at the outlet, even with moderate to low solar exposure. The third key point of this solar panel — air conditioning. The photocell is connected to a cooling device, which allows it not to overheat during the day.

Currently, the efficiency of the prototype is 58 W/m2 in the shade and 38 W/m2 in direct sunlight. Kuuler engineers are still testing the conceptual prototype and plan to continue the research for five years. When the prototype is perfected, they hope to commercialize it by bringing a solar cell with heating and air conditioning to the market.