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Assessment of thermohydraulic performance and entropy generation in an evacuated tube solar collector employing pure water and nanofluids as working fluids.
López-Núñez, Oscar A; Lara, F; González-Angeles, A; Cardenas-Robles, A; Ramírez-Minguela, J J; Alfaro-Ayala, J Arturo.
Afiliação
  • López-Núñez OA; Facultad de Ingeniería, Universidad Autónoma de Baja California, Blvd. Benito Juárez s/n, C.P. 21280, Mexicali, Baja California, Mexico.
  • Lara F; Facultad de Ingeniería, Universidad Autónoma de Baja California, Blvd. Benito Juárez s/n, C.P. 21280, Mexicali, Baja California, Mexico.
  • González-Angeles A; Facultad de Ingeniería, Universidad Autónoma de Baja California, Blvd. Benito Juárez s/n, C.P. 21280, Mexicali, Baja California, Mexico.
  • Cardenas-Robles A; Facultad de Ingeniería, Universidad Autónoma de Baja California, Blvd. Benito Juárez s/n, C.P. 21280, Mexicali, Baja California, Mexico.
  • Ramírez-Minguela JJ; Department of Chemical Engineering, University of Guanajuato, DCNE, Col. Noria Alta s/n, C.P. 36050, Guanajuato, Gto, Mexico.
  • Alfaro-Ayala JA; Department of Chemical Engineering, University of Guanajuato, DCNE, Col. Noria Alta s/n, C.P. 36050, Guanajuato, Gto, Mexico.
Heliyon ; 10(8): e29309, 2024 Apr 30.
Article em En | MEDLINE | ID: mdl-38628761
ABSTRACT
This study conducts a numerical comparison of the thermal performance of three distinct working fluids (pure water, TiO2, and SiO2 water-based nanofluids) within an evacuated tube solar collector using Computational Fluid Dynamics. The study evaluates thermohydraulic performance alongside global and local entropy generation rates, while considering variations in solar radiation values and inlet mass flow rates. Results indicate that nanofluids demonstrate superior performance under low solar radiation, exhibiting higher outlet temperatures, velocities, thermal efficiency, and exergy efficiency compared to pure water. However, at the higher solar radiation level, the efficiency of SiO2 water-based nanofluid diminishes due to its impact on specific heat. Furthermore, the entropy generation analysis reveals significant reductions with TiO2 water-based nanofluid in all the phenomena considered (up to 79 %). The SiO2 nanofluid performance aligns closely with pure water under high radiation value. This investigation offers valuable insights into the utilization of nanofluids in solar collectors across diverse operating conditions, emphasizing their pivotal role in enhancing overall performance.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Heliyon Ano de publicação: 2024 Tipo de documento: Article País de afiliação: México País de publicação: Reino Unido
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Heliyon Ano de publicação: 2024 Tipo de documento: Article País de afiliação: México País de publicação: Reino Unido