Improving the efficiency of solar photovoltaics by means of geothermal cooling: a year-long test campaign
Heating up of photovoltaic modules during operation results in a significant power output reduction. This effect is especially relevant in regions with the highest photovoltaic potential, where irradiance and ambient temperature are particularly high. In this paper, a novel low enthalpy geothermal c...
| Autores: | , , , |
|---|---|
| Tipo de documento: | artigo |
| Data de publicação: | 2024 |
| País: | España |
| Recursos: | Universidad de Alcalá (UAH) |
| Repositório: | e_Buah Biblioteca Digital Universidad de Alcalá |
| Idioma: | inglês |
| OAI Identifier: | oai:dnet:ebuahbibliot::9ab5160ef3e9a1e016867844846fa067 |
| Acesso em linha: | http://hdl.handle.net/10017/66682 https://dx.doi.org/10.1016/j.renene.2024.120553 |
| Access Level: | Acceso aberto |
| Palavra-chave: | Geothermal cooling Photovoltaics Efficiency improvement Active cooling Energías Renovables/Energías Alternativas Alternative energies |
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Improving the efficiency of solar photovoltaics by means of geothermal cooling: a year-long test campaignLópez Pascual, Diego|||0000-0002-2485-2297Valiente Blanco, Ignacio|||0000-0001-5068-7910Fernández Muñoz, Miguel|||0000-0001-8872-7834Díez Jiménez, Efrén|||0000-0002-3689-841XGeothermal coolingPhotovoltaicsEfficiency improvementActive coolingEnergías Renovables/Energías AlternativasAlternative energiesHeating up of photovoltaic modules during operation results in a significant power output reduction. This effect is especially relevant in regions with the highest photovoltaic potential, where irradiance and ambient temperature are particularly high. In this paper, a novel low enthalpy geothermal cooling system that improves the efficiency of a commercial solar module is described and experimentally validated. Two heat exchangers, one attached to the backside of the module, and another introduced inside a 15 m deep borehole, are connected in a closed circuit. A water-based coolant is pumped through the system, evacuating the excess heat from the module, and dissipating it underground in a clean and efficient manner, without additional water consumption after filling the system. The performance of the cooling system was experimentally tested by implementing it, for the first time, in a single-axis solar tracking isolated photovoltaic facility. Extensive tests were carried out in Spain, between September 2021 and August 2022 under a wide variety of environmental conditions. The efficiency improvement system has demonstrated its technical feasibility over a one-year period, showing a peak net efficiency improvement up to 13.4 %. Moreover, a positive net efficiency improvement has been demonstrated all year long, even during the winter months.Ministerio de Ciencia e InnovaciónUniversidad de AlcaláElsevier20242024-06-0120242024-06-0120262026-06-01journal articlehttp://purl.org/coar/resource_type/c_6501NAhttp://purl.org/coar/version/c_be7fb7dd8ff6fe43info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10017/66682https://dx.doi.org/10.1016/j.renene.2024.120553reponame:e_Buah Biblioteca Digital Universidad de Alcaláinstname:Universidad de Alcalá (UAH)InglésengMinisterio de Ciencia e Innovación http://dx.doi.org/10.13039/501100004837 Not available RYC-2017-23684UAH Not available CM-JIN-2019-026UAH Not available CM-JIN-2021-035open accesshttp://purl.org/coar/access_right/c_abf2Attribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:dnet:ebuahbibliot::9ab5160ef3e9a1e016867844846fa0672026-06-18T11:13:07Z |
| dc.title.none.fl_str_mv |
Improving the efficiency of solar photovoltaics by means of geothermal cooling: a year-long test campaign |
| title |
Improving the efficiency of solar photovoltaics by means of geothermal cooling: a year-long test campaign |
| spellingShingle |
Improving the efficiency of solar photovoltaics by means of geothermal cooling: a year-long test campaign López Pascual, Diego|||0000-0002-2485-2297 Geothermal cooling Photovoltaics Efficiency improvement Active cooling Energías Renovables/Energías Alternativas Alternative energies |
| title_short |
Improving the efficiency of solar photovoltaics by means of geothermal cooling: a year-long test campaign |
| title_full |
Improving the efficiency of solar photovoltaics by means of geothermal cooling: a year-long test campaign |
| title_fullStr |
Improving the efficiency of solar photovoltaics by means of geothermal cooling: a year-long test campaign |
| title_full_unstemmed |
Improving the efficiency of solar photovoltaics by means of geothermal cooling: a year-long test campaign |
| title_sort |
Improving the efficiency of solar photovoltaics by means of geothermal cooling: a year-long test campaign |
| dc.creator.none.fl_str_mv |
López Pascual, Diego|||0000-0002-2485-2297 Valiente Blanco, Ignacio|||0000-0001-5068-7910 Fernández Muñoz, Miguel|||0000-0001-8872-7834 Díez Jiménez, Efrén|||0000-0002-3689-841X |
| author |
López Pascual, Diego|||0000-0002-2485-2297 |
| author_facet |
López Pascual, Diego|||0000-0002-2485-2297 Valiente Blanco, Ignacio|||0000-0001-5068-7910 Fernández Muñoz, Miguel|||0000-0001-8872-7834 Díez Jiménez, Efrén|||0000-0002-3689-841X |
| author_role |
author |
| author2 |
Valiente Blanco, Ignacio|||0000-0001-5068-7910 Fernández Muñoz, Miguel|||0000-0001-8872-7834 Díez Jiménez, Efrén|||0000-0002-3689-841X |
| author2_role |
author author author |
| dc.subject.none.fl_str_mv |
Geothermal cooling Photovoltaics Efficiency improvement Active cooling Energías Renovables/Energías Alternativas Alternative energies |
| topic |
Geothermal cooling Photovoltaics Efficiency improvement Active cooling Energías Renovables/Energías Alternativas Alternative energies |
| description |
Heating up of photovoltaic modules during operation results in a significant power output reduction. This effect is especially relevant in regions with the highest photovoltaic potential, where irradiance and ambient temperature are particularly high. In this paper, a novel low enthalpy geothermal cooling system that improves the efficiency of a commercial solar module is described and experimentally validated. Two heat exchangers, one attached to the backside of the module, and another introduced inside a 15 m deep borehole, are connected in a closed circuit. A water-based coolant is pumped through the system, evacuating the excess heat from the module, and dissipating it underground in a clean and efficient manner, without additional water consumption after filling the system. The performance of the cooling system was experimentally tested by implementing it, for the first time, in a single-axis solar tracking isolated photovoltaic facility. Extensive tests were carried out in Spain, between September 2021 and August 2022 under a wide variety of environmental conditions. The efficiency improvement system has demonstrated its technical feasibility over a one-year period, showing a peak net efficiency improvement up to 13.4 %. Moreover, a positive net efficiency improvement has been demonstrated all year long, even during the winter months. |
| publishDate |
2024 |
| dc.date.none.fl_str_mv |
2024 2024-06-01 2024 2024-06-01 2026 2026-06-01 |
| dc.type.none.fl_str_mv |
journal article http://purl.org/coar/resource_type/c_6501 NA http://purl.org/coar/version/c_be7fb7dd8ff6fe43 |
| dc.type.openaire.fl_str_mv |
info:eu-repo/semantics/article |
| format |
article |
| dc.identifier.none.fl_str_mv |
http://hdl.handle.net/10017/66682 https://dx.doi.org/10.1016/j.renene.2024.120553 |
| url |
http://hdl.handle.net/10017/66682 https://dx.doi.org/10.1016/j.renene.2024.120553 |
| dc.language.none.fl_str_mv |
Inglés eng |
| language_invalid_str_mv |
Inglés |
| language |
eng |
| dc.relation.none.fl_str_mv |
Ministerio de Ciencia e Innovación http://dx.doi.org/10.13039/501100004837 Not available RYC-2017-23684 UAH Not available CM-JIN-2019-026 UAH Not available CM-JIN-2021-035 |
| dc.rights.none.fl_str_mv |
open access http://purl.org/coar/access_right/c_abf2 Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ |
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info:eu-repo/semantics/openAccess |
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open access http://purl.org/coar/access_right/c_abf2 Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ |
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openAccess |
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application/pdf |
| dc.publisher.none.fl_str_mv |
Elsevier |
| publisher.none.fl_str_mv |
Elsevier |
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reponame:e_Buah Biblioteca Digital Universidad de Alcalá instname:Universidad de Alcalá (UAH) |
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Universidad de Alcalá (UAH) |
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