Thermodynamic Optimization of Electrical and Thermal Energy Production of PV Panels and Potential for Valorization of the PV Low-Grade Thermal Energy into Cold
In the present study, the evaluation of potential improvement of the overall efficiency of a common PV panel, valorizing the heat extracted by a heat exchanger that is integrated on its back side, either into work using an endoreversible Carnot engine or into cold by using an endoreversible tri-ther...
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MDPI AG
2022-01-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/15/2/498 |
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| author | Anis Idir Maxime Perier-Muzet David Aymé-Perrot Driss Stitou |
| author_facet | Anis Idir Maxime Perier-Muzet David Aymé-Perrot Driss Stitou |
| author_sort | Anis Idir |
| collection | DOAJ |
| description | In the present study, the evaluation of potential improvement of the overall efficiency of a common PV panel, valorizing the heat extracted by a heat exchanger that is integrated on its back side, either into work using an endoreversible Carnot engine or into cold by using an endoreversible tri-thermal machine consisting of a heat-driven refrigeration machine operating between three temperature sources and sink (such as a liquid/gas absorption machine), was carried out. A simplified thermodynamic analysis of the PV/thermal collector shows that there are two optimal operating temperatures <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mover accent="true"><mi>T</mi><mo>˜</mo></mover><mi>h</mi></msub></mrow></semantics></math></inline-formula> and <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msubsup><mi>T</mi><mi>h</mi><mo>*</mo></msubsup></mrow></semantics></math></inline-formula> of the panels, which maximize either the thermal exergy or the overall exergy of the PV panel, respectively. The cold produced by the endoreversible tri-thermal machine during the operating conditions of the PV/thermal collector at <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mover accent="true"><mi>T</mi><mo>˜</mo></mover><mi>h</mi></msub></mrow></semantics></math></inline-formula> is higher with a coefficient of performance (COP) of 0.24 thanks to the higher heat recovery potential. In the case of using the cold produced by a tri-thermal machine to actively cool of an additional PV panel in order to increase its electrical performances, the operating conditions at the optimal temperature <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msubsup><mi>T</mi><mi>h</mi><mo>*</mo></msubsup></mrow></semantics></math></inline-formula> provide a larger and more stable gain: the gain is about 12.2% compared with the conventional PV panel when the operating temperature of the second cooled panel varies from 15 to 35 °C. |
| first_indexed | 2024-03-10T01:33:55Z |
| format | Article |
| id | doaj.art-c782179874e947e59692e291e7db59ca |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T01:33:55Z |
| publishDate | 2022-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-c782179874e947e59692e291e7db59ca2023-11-23T13:37:11ZengMDPI AGEnergies1996-10732022-01-0115249810.3390/en15020498Thermodynamic Optimization of Electrical and Thermal Energy Production of PV Panels and Potential for Valorization of the PV Low-Grade Thermal Energy into ColdAnis Idir0Maxime Perier-Muzet1David Aymé-Perrot2Driss Stitou3PROMES Laboratory (PROcess, Material and Solar Energy), CNRS-UPR8521, Rambla de la Thermodynamique, Tecnosud, 66100 Perpignan, FrancePROMES Laboratory (PROcess, Material and Solar Energy), CNRS-UPR8521, Rambla de la Thermodynamique, Tecnosud, 66100 Perpignan, FranceTotalEnergies SE, 2 Place Jean Millier–, 92078 Courbevoie, FrancePROMES Laboratory (PROcess, Material and Solar Energy), CNRS-UPR8521, Rambla de la Thermodynamique, Tecnosud, 66100 Perpignan, FranceIn the present study, the evaluation of potential improvement of the overall efficiency of a common PV panel, valorizing the heat extracted by a heat exchanger that is integrated on its back side, either into work using an endoreversible Carnot engine or into cold by using an endoreversible tri-thermal machine consisting of a heat-driven refrigeration machine operating between three temperature sources and sink (such as a liquid/gas absorption machine), was carried out. A simplified thermodynamic analysis of the PV/thermal collector shows that there are two optimal operating temperatures <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mover accent="true"><mi>T</mi><mo>˜</mo></mover><mi>h</mi></msub></mrow></semantics></math></inline-formula> and <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msubsup><mi>T</mi><mi>h</mi><mo>*</mo></msubsup></mrow></semantics></math></inline-formula> of the panels, which maximize either the thermal exergy or the overall exergy of the PV panel, respectively. The cold produced by the endoreversible tri-thermal machine during the operating conditions of the PV/thermal collector at <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mover accent="true"><mi>T</mi><mo>˜</mo></mover><mi>h</mi></msub></mrow></semantics></math></inline-formula> is higher with a coefficient of performance (COP) of 0.24 thanks to the higher heat recovery potential. In the case of using the cold produced by a tri-thermal machine to actively cool of an additional PV panel in order to increase its electrical performances, the operating conditions at the optimal temperature <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msubsup><mi>T</mi><mi>h</mi><mo>*</mo></msubsup></mrow></semantics></math></inline-formula> provide a larger and more stable gain: the gain is about 12.2% compared with the conventional PV panel when the operating temperature of the second cooled panel varies from 15 to 35 °C.https://www.mdpi.com/1996-1073/15/2/498power and cold cogenerationenergy performanceexergy analysissolar energy |
| spellingShingle | Anis Idir Maxime Perier-Muzet David Aymé-Perrot Driss Stitou Thermodynamic Optimization of Electrical and Thermal Energy Production of PV Panels and Potential for Valorization of the PV Low-Grade Thermal Energy into Cold Energies power and cold cogeneration energy performance exergy analysis solar energy |
| title | Thermodynamic Optimization of Electrical and Thermal Energy Production of PV Panels and Potential for Valorization of the PV Low-Grade Thermal Energy into Cold |
| title_full | Thermodynamic Optimization of Electrical and Thermal Energy Production of PV Panels and Potential for Valorization of the PV Low-Grade Thermal Energy into Cold |
| title_fullStr | Thermodynamic Optimization of Electrical and Thermal Energy Production of PV Panels and Potential for Valorization of the PV Low-Grade Thermal Energy into Cold |
| title_full_unstemmed | Thermodynamic Optimization of Electrical and Thermal Energy Production of PV Panels and Potential for Valorization of the PV Low-Grade Thermal Energy into Cold |
| title_short | Thermodynamic Optimization of Electrical and Thermal Energy Production of PV Panels and Potential for Valorization of the PV Low-Grade Thermal Energy into Cold |
| title_sort | thermodynamic optimization of electrical and thermal energy production of pv panels and potential for valorization of the pv low grade thermal energy into cold |
| topic | power and cold cogeneration energy performance exergy analysis solar energy |
| url | https://www.mdpi.com/1996-1073/15/2/498 |
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