Experimental investigations of heat transfer, energy, and exergy-based sustainability of a novel photovoltaic thermal system
The inefficiency of photovoltaic systems is a major obstacle. This research proposes an advanced collector design with dimpled and petal-patterned absorber tubes, coiled twisted tape, and nanofluids combined with nanophase changing materials. The adopted methodology consists of two phases, namely ex...
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| Language: | English |
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Elsevier
2025-06-01
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| Series: | Case Studies in Thermal Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X25003491 |
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| author | Hariam Luqman Azeez Adnan Ibrahim Banw Omer Ahmed Sharul Sham Dol Ali H.A. Al-Waeli Mahmoud Jaber |
| author_facet | Hariam Luqman Azeez Adnan Ibrahim Banw Omer Ahmed Sharul Sham Dol Ali H.A. Al-Waeli Mahmoud Jaber |
| author_sort | Hariam Luqman Azeez |
| collection | DOAJ |
| description | The inefficiency of photovoltaic systems is a major obstacle. This research proposes an advanced collector design with dimpled and petal-patterned absorber tubes, coiled twisted tape, and nanofluids combined with nanophase changing materials. The adopted methodology consists of two phases, namely experimentally characterizing the heat transfer performance of the absorber tubes and conducting indoor experiments to evaluate the performance of the new photovoltaic thermal system. The experiments were performed under different flow rates of (0.01–0.085 kg/s), irradiances (400–1000 W/m2), and six different coolants. The initial experiment revealed an inverse relationship between the mass flow rate and the thermal performance of the absorber tubes. However, mass flow rates, solar irradiances up to 1000 W/m2, and using various coolants positively impacted the overall performance of the photovoltaic system. The absorber tube with dimples, petal arrays, coiled twisted tape, and nanofluid outperformed the smooth tube with water threefold. Additionally, the photovoltaic thermal system utilizing nanofluids and nanophase changing materials achieved electrical and thermal energy enhancements of 32 % and 21.2 %. The optimal design demonstrated environmental and economic viability, with total output surpassing input energy by 2.11 MWh and net CO2 mitigation exceeding CO2 emissions by 0.63 tons. |
| format | Article |
| id | doaj-art-3ec8103871b64a13b8d31ae1472391c1 |
| institution | DOAJ |
| issn | 2214-157X |
| language | English |
| publishDate | 2025-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Thermal Engineering |
| spelling | doaj-art-3ec8103871b64a13b8d31ae1472391c12025-08-20T02:55:20ZengElsevierCase Studies in Thermal Engineering2214-157X2025-06-017010608910.1016/j.csite.2025.106089Experimental investigations of heat transfer, energy, and exergy-based sustainability of a novel photovoltaic thermal systemHariam Luqman Azeez0Adnan Ibrahim1Banw Omer Ahmed2Sharul Sham Dol3Ali H.A. Al-Waeli4Mahmoud Jaber5Solar Energy Research Institute, Universiti Kebangsaan Malaysia, Bangi, 43600, Selangor, MalaysiaSolar Energy Research Institute, Universiti Kebangsaan Malaysia, Bangi, 43600, Selangor, Malaysia; Corresponding author.Solar Energy Research Institute, Universiti Kebangsaan Malaysia, Bangi, 43600, Selangor, MalaysiaDepartment of Mechanical and Industrial Engineering, Abu Dhabi University, Abu Dhabi PO Box 59911, United Arab EmiratesEngineering Department, American University of Iraq, Sulaimani, Kurdistan Region, Sulaimani, IraqSolar Energy Research Institute, Universiti Kebangsaan Malaysia, Bangi, 43600, Selangor, MalaysiaThe inefficiency of photovoltaic systems is a major obstacle. This research proposes an advanced collector design with dimpled and petal-patterned absorber tubes, coiled twisted tape, and nanofluids combined with nanophase changing materials. The adopted methodology consists of two phases, namely experimentally characterizing the heat transfer performance of the absorber tubes and conducting indoor experiments to evaluate the performance of the new photovoltaic thermal system. The experiments were performed under different flow rates of (0.01–0.085 kg/s), irradiances (400–1000 W/m2), and six different coolants. The initial experiment revealed an inverse relationship between the mass flow rate and the thermal performance of the absorber tubes. However, mass flow rates, solar irradiances up to 1000 W/m2, and using various coolants positively impacted the overall performance of the photovoltaic system. The absorber tube with dimples, petal arrays, coiled twisted tape, and nanofluid outperformed the smooth tube with water threefold. Additionally, the photovoltaic thermal system utilizing nanofluids and nanophase changing materials achieved electrical and thermal energy enhancements of 32 % and 21.2 %. The optimal design demonstrated environmental and economic viability, with total output surpassing input energy by 2.11 MWh and net CO2 mitigation exceeding CO2 emissions by 0.63 tons.http://www.sciencedirect.com/science/article/pii/S2214157X25003491DimplesTwisted tapeNanofluid: nanophase changing material: PVT systemsHeat transfer characterization |
| spellingShingle | Hariam Luqman Azeez Adnan Ibrahim Banw Omer Ahmed Sharul Sham Dol Ali H.A. Al-Waeli Mahmoud Jaber Experimental investigations of heat transfer, energy, and exergy-based sustainability of a novel photovoltaic thermal system Case Studies in Thermal Engineering Dimples Twisted tape Nanofluid: nanophase changing material: PVT systems Heat transfer characterization |
| title | Experimental investigations of heat transfer, energy, and exergy-based sustainability of a novel photovoltaic thermal system |
| title_full | Experimental investigations of heat transfer, energy, and exergy-based sustainability of a novel photovoltaic thermal system |
| title_fullStr | Experimental investigations of heat transfer, energy, and exergy-based sustainability of a novel photovoltaic thermal system |
| title_full_unstemmed | Experimental investigations of heat transfer, energy, and exergy-based sustainability of a novel photovoltaic thermal system |
| title_short | Experimental investigations of heat transfer, energy, and exergy-based sustainability of a novel photovoltaic thermal system |
| title_sort | experimental investigations of heat transfer energy and exergy based sustainability of a novel photovoltaic thermal system |
| topic | Dimples Twisted tape Nanofluid: nanophase changing material: PVT systems Heat transfer characterization |
| url | http://www.sciencedirect.com/science/article/pii/S2214157X25003491 |
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