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Communication Dans Un Congrès Année : 2021

Are nanofluids suitable for volumetric absorption in ptc-csp plants? an exemplify, realistic assessment with characterised metal-oil nanofluids

Iván Carrillo-Berdugo
  • Fonction : Auteur
Paloma Martínez-Merino
  • Fonction : Auteur
Elisa Sani
  • Fonction : Auteur
  • PersonId : 1097599
Javier Navas
  • Fonction : Auteur
  • PersonId : 1044991

Résumé

Concentrated solar power (CSP) has the potential to make prompt, significant carbon dioxide emission cuts by mitigating the intermittency of wind and photovoltaic power, therefore boosting their presence in our energy landscape. The low achievable energy conversion efficiency with CSP defines a limit for its operational value whose improvement could accelerate the deployment of this technology. The use of nanofluids as optimised heat transfer fluids (HTF) has been proposed as a suitable strategy for such a purpose, if the physical properties that rule convection heat transfer are properly enhanced. More recently, nanofluids have been proposed to be used not only as HTF but, also, as volumetric absorbers for direct sunlight harvesting in CSP plants with parabolic trough collectors (PTC), if the absorption and scattering profile of nanofluids provides good optical performance. Here we report on the design requirements for the achievement of the maximum working temperatures and assess the expected efficiencies for surface and volumetric PTC with Pd nanoplate-containing aromatic oilbased nanofluids. The analysis is based on numerical models for both types of PTC and considers the actual characteristics of PTC and the optical, thermal and rheological properties of the nanofluid, which has been characterised. Different case scenarios are compared.
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Dates et versions

hal-03344190 , version 1 (14-09-2021)

Identifiants

  • HAL Id : hal-03344190 , version 1

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Iván Carrillo-Berdugo, Paloma Martínez-Merino, Patrice Estellé, Elisa Sani, Javier Navas. Are nanofluids suitable for volumetric absorption in ptc-csp plants? an exemplify, realistic assessment with characterised metal-oil nanofluids. ATE HEFAT 2021 - The 15th international conference on heat transfer, fluid mechanics and thermodynamics (HEFAT) and editorial board of applied thermal engineering (ATE), Jul 2021, Virtual, France. pp.337-342. ⟨hal-03344190⟩
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