{
  "abstract": "Limited efficacy for solar thermal collectors’ designs remains a challenge. This work uses computational fluid dynamics (CFD) to examine three Micro-groove channel configurations: a Micro-groove channel, a Micro-groove channel with a swirled ribbon, and a Micro-groove channel with a swirled ribbon and a new square coil. This study aims to assess the thermo-hydraulic characteristics and establish the most efficient design. The proposed photovoltaic thermal (PVT) system employs water and a nanofluid (NF) containing Al₂O₃ at volume concentrations of 0.1% and 0.2% as working fluids. Experimental and numerical evaluations were performed with volume flow ranging from $$\\:166\\times\\:{10}^{-7}\\:to\\:498\\times\\:{10}^{-7}$$ m3/second and irradiance intensity of solar from 400 watts/square meter to 1000 watts/square meter. The innovative design, using micro-groove channels and swirled ribbon coil, demonstrates enhanced performance, with a thermal hydraulic performance factor of 1.2. It was experimentally found that electrical efficiency significantly improved, increasing by 37.91% when 0.2% NF was used under ideal flow and irradiance conditions. The system showed a high decrease in PV cell temperature of 32.04 °C and the high-power output of 24.2 W. The findings shed light on the effectiveness of the proposed design in the enhancement of the PVT system.",
  "abstract_shown": true,
  "affiliations": [
    "Solar Energy Research Institute, Universiti Kebangsaan Malaysia",
    "Department of Mechanical and Industrial Engineering, Abu Dhabi University",
    "Mechanical Engineering Department, University of Thi-Qar",
    "Department of Mechanical Engineering, Universiti Teknologi PETRONAS"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 8,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Firas Abdulamir Radhi"
    },
    {
      "affs": [
        0
      ],
      "name": "Adnan Ibrahim"
    },
    {
      "affs": [
        1
      ],
      "name": "Mohammad Alkhedher"
    },
    {
      "affs": [
        2
      ],
      "name": "Ahmed Ameen Ali"
    },
    {
      "affs": [
        0
      ],
      "name": "Zeki Ali Al-Saadi"
    },
    {
      "affs": [
        3
      ],
      "name": "Kamaruzzaman Sopian"
    },
    {
      "affs": [
        0
      ],
      "name": "Hariam Luqman Azeez"
    },
    {
      "affs": [
        0
      ],
      "name": "Ahmad Fazlizan"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/0ec0yjvdbcms1.bib",
  "cited_by": 0,
  "doi": "10.1038/s41598-026-67381-5",
  "fulltext_url": "https://doi.org/10.1038/s41598-026-67381-5",
  "id": "0ec0yjvdbcms1",
  "issns": [
    "2045-2322"
  ],
  "landing_url": "https://doi.org/10.1038/s41598-026-67381-5",
  "language": "en",
  "licence": "CC-BY",
  "licence_label": "CC BY",
  "licence_source": "journal",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "lcc",
      "Q"
    ],
    [
      "lcc",
      "R"
    ],
    [
      "openalex",
      "2105|Solar Thermal and Photovoltaic Systems"
    ]
  ],
  "openalex": "W7203727712",
  "pdf_url": "https://www.nature.com/articles/s41598-026-67381-5_reference.pdf",
  "pmcid": null,
  "pmid": null,
  "published": "2026-08-01",
  "publisher": "Nature Portfolio",
  "ris": "https://research.draconitic.com/paper/0ec0yjvdbcms1.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T13:45:54Z",
      "native_id": "a081b133cc5c4e00b9f3f15703ae0a22",
      "source": "doaj",
      "url": "https://doi.org/10.1038/s41598-026-67381-5"
    }
  ],
  "subjects": [
    {
      "field": "medicine",
      "origin": "lcc:R",
      "subfield": "general"
    }
  ],
  "title": "Analysis of solar collector efficiency utilizing micro-groove channels, swirled ribbon, and square coil improvements: a numerical and experimental study",
  "title_text": "Analysis of solar collector efficiency utilizing micro-groove channels, swirled ribbon, and square coil improvements: a numerical and experimental study",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T13:45:54Z",
  "url": "https://research.draconitic.com/paper/0ec0yjvdbcms1",
  "venue": "Scientific Reports",
  "versions": []
}