Abstract
Nowadays, solar volumetric absorbers represent a promising alternative to harvest solar radiation. In these devices, the traditional blackened surface where solar radiation is converted into heat and later transferred to a heat transfer fluid is removed. Then, the solar radiation is trapped by direct volumetric absorption on the carrier fluid itself. This reduces the radiative losses and improves the photo-thermal efficiency. From all the technological available options to fabricate volumetric absorbers, "solar nanofluids" that consist of nanoparticles (NPs) suspended in a heat transfer fluid have boost as a promising alternative [1]. Nevertheless, up to now the synthesis of solar nanofluids faces different challenges as the difficulty to create stable nanofluids composed by complex organic oils and metal nanoparticles (MNPs) in an environmental friendly way, without producing chemical waste. In this communication, it is presented the synthesis of a solar nanofluid by an eco-friendly in-situ technique known as Pulsed Laser Ablation in Liquids (PLAL) [2].
© 2017 IEEE
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