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Radiation heat for solar panels

14.02.2020

A team of modern energy engineers from the University of California, Los Angeles, presented their new project, which is a unique device that can capture radiant heat and increase the amount of electricity generated by simply converting sunlight into electricity itself. Scientists note that their new device should hardly be considered as self-sufficient in the strict sense of the word, but instead it is better to look at it as an active module for improving the performance of solar batteries, and in a noticeably more productive manner.

The fact is that the concept of cheap electricity in itself is quite attractive - especially for those people who live in rather poor regions of the planet, who are deprived of the opportunity to have access to it on a permanent basis. Therefore, teams such as the one from California are making every effort to make life easier for such people. The new project is a device costing about $30 that can capture dissipated radiant heat - coming mainly from active solar array modules - and using the phenomenon of natural cooling to keep the residual heat inside the cells of solar panels and batteries.

In this way, it is much easier to cope with the capture, storage and distribution of more solar energy than when using standard functionality and equipment, which cannot always present exactly the result that is needed by both ordinary users and experts.

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Paint blacker than black 10.11.2003

A team of researchers from the National Physical Laboratory in Teddington (UK) has created an ultra-black paint that reflects only 0,35 percent of the light falling on it.

Regular black paint reflects at least 2,6 percent of visible light. Super black paint is made from a combination of nickel and phosphorus. The surface to be blackened is immersed in a solution of nickel salt and sodium hypophosphite.

As a result of a chemical reaction, a layer of nickel-phosphorus compound is obtained. The main thing here is to ensure that the proportion of phosphorus is six percent. Then, when immersed in nitric acid, microscopic craters are obtained on the surface of the black layer, in the walls of which light rays are absorbed.

The new blackening method is suitable for many materials, including metal and ceramic. It can be used in the manufacture of optical instruments, telescopes, cameras. But one square centimeter of such a particularly black surface costs more than 150 euros.

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