Scholarlink

<p>Air-based photovoltaic-thermal (PVT) systems offer a sustainable solution for generating combined electrical and thermal energy. Still, their performance is hindered by high operating temperatures in water-scarce, high-irradiation regions like Port Said, Egypt. This study is significant for developing a cost-effective, passive cooling solution to enhance PVT efficiency and longevity, supporting renewable energy adoption in arid climates. The purpose is to design and validate an air-based PVT system with a novel cooling chimney (40.0&#xa0;cm height) and four-inlet design (1.0&#xa0;cm principal, 2.0–4.0-cm secondary inlets) using computational fluid dynamics (CFD). This novel design outperforms conventional single-inlet air-cooling systems by achieving uniform heat dissipation and higher thermal efficiencies. Major novel findings include thermal efficiencies of 25.0–35.0%, electrical efficiencies of 1.0–3.0%, and reduced PVT surface temperatures to 340.0&#xa0;K at 1100&#xa0;W m<sup>−2</sup>, achieved through buoyancy-driven airflow (mass flow rate of 0.0010–0.0050&#xa0;kg s<sup>−1</sup>, Reynolds number of 500–2000) via the chimney effect. CFD simulations in ANSYS 2025 validate these results using a 988,200 hexahedral cell mesh with the Boussinesq approximation and k-ε turbulence model. This passive cooling design, incorporating a front glass, PV module, and absorber, offers a low-maintenance alternative for building-integrated or solar farm applications in arid regions.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Enhancing air-based photovoltaic-thermal panel performance with a novel four-inlet air-cooling system featuring fins and a cooling chimney

  • 期刊论文

  • 发表日期：

    2025年8月24日

查看全文
  • Mahmoud Bady,
  • Mohammed El Hadi Attia,
  • Abdelkrim Khelifa,
  • Abd Elnaby Kabeel,
  • Abdou Basha,
  • Nabil Elminshawy

摘要

Air-based photovoltaic-thermal (PVT) systems offer a sustainable solution for generating combined electrical and thermal energy. Still, their performance is hindered by high operating temperatures in water-scarce, high-irradiation regions like Port Said, Egypt. This study is significant for developing a cost-effective, passive cooling solution to enhance PVT efficiency and longevity, supporting renewable energy adoption in arid climates. The purpose is to design and validate an air-based PVT system with a novel cooling chimney (40.0 cm height) and four-inlet design (1.0 cm principal, 2.0–4.0-cm secondary inlets) using computational fluid dynamics (CFD). This novel design outperforms conventional single-inlet air-cooling systems by achieving uniform heat dissipation and higher thermal efficiencies. Major novel findings include thermal efficiencies of 25.0–35.0%, electrical efficiencies of 1.0–3.0%, and reduced PVT surface temperatures to 340.0 K at 1100 W m−2, achieved through buoyancy-driven airflow (mass flow rate of 0.0010–0.0050 kg s−1, Reynolds number of 500–2000) via the chimney effect. CFD simulations in ANSYS 2025 validate these results using a 988,200 hexahedral cell mesh with the Boussinesq approximation and k-ε turbulence model. This passive cooling design, incorporating a front glass, PV module, and absorber, offers a low-maintenance alternative for building-integrated or solar farm applications in arid regions.