Measurements of solar energy absorption in a solar collector using carbon nanofluids

Arianna Berto, Nicolò Mattiuzzo, Emanuele Zanetti, Moreno Meneghetti and Davide Del Col

Renewable Energy, 2024, vol. 230, issue C

Abstract: To overcome the limitations of conventional solar thermal collectors (high conductive and convective thermal resistances between the absorber and the fluid), a promising technology is represented by direct absorption solar collectors working with nanofluids, where the incoming solar irradiance is absorbed directly within the volume of fluid. The main issue hindering the diffusion of such technology is related to its reliability, since nanofluids can lose their chemical stability due to nanoparticles sedimentation. Thus, the present work aims at investigating the stability and absorption capability of two nanofluids made of Single-Wall-Carbon-NanoHorns in a volumetric solar receiver.

Keywords: Nanofluids; Carbon nanofluids; Solar collector; DASC; Volumetric solar collector; Thermal efficiency (search for similar items in EconPapers)
Date: 2024
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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:230:y:2024:i:c:s0960148124008310

DOI: 10.1016/j.renene.2024.120763

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