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

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

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.

Suggested Citation

  • Berto, Arianna & Mattiuzzo, Nicolò & Zanetti, Emanuele & Meneghetti, Moreno & Del Col, Davide, 2024. "Measurements of solar energy absorption in a solar collector using carbon nanofluids," Renewable Energy, Elsevier, vol. 230(C).
    • Handle: RePEc:eee:renene:v:230:y:2024:i:c:s0960148124008310
    DOI: 10.1016/j.renene.2024.120763
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