Roof-mounted photovoltaic generator temperatue modeling based on common brazil roofing materials
This paper examines the performance of solar photovoltaic generators on roofs of residential buildings. The primary focus is the loss of performance due to temperature increase as function of roof material and the distance from the photovoltaic (PV) generator to the roof. A heat transfer model has b...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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EDP Sciences
2022-01-01
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| Series: | Renewable Energy and Environmental Sustainability |
| Online Access: | https://www.rees-journal.org/articles/rees/full_html/2022/01/rees210048/rees210048.html |
| _version_ | 1798014645887303680 |
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| author | Guimarães Bernardo de Souza Farias Lucas Filho Delly Oliveira Kazmerski Lawrence Cardoso Diniz Antonia Sônia A. |
| author_facet | Guimarães Bernardo de Souza Farias Lucas Filho Delly Oliveira Kazmerski Lawrence Cardoso Diniz Antonia Sônia A. |
| author_sort | Guimarães Bernardo de Souza |
| collection | DOAJ |
| description | This paper examines the performance of solar photovoltaic generators on roofs of residential buildings. The primary focus is the loss of performance due to temperature increase as function of roof material and the distance from the photovoltaic (PV) generator to the roof. A heat transfer model has been developed to predict PV module temperature, and the equations of the model were solved using the Engineering Equation Solver (EES) software. The research modeling correlates the distance of the solar generator to the roof and the roofing material with the temperature variations in the PV generator. There are many models to predict PV module temperature, but this study refines the prediction by the distance from PV module to roof and the roofing material as variables. Optimal combinations of distance and materials that minimize the heating loss in the solar generator leading to increased electrical power generation. Results show an average error of 3%–4% from the temperature predicted by the model to the temperature measured under experimental conditions in Belo Horizonte, Brazil. The minimum roof-module separation required to ensure minimal PV performance loss from heating from the roof is ∼10 cm for red ceramic and cement fiber roofs. For galvanized steel, the optimal distance is between 20 cm and 30 cm. Cement fiber shows the best predicted and measured characteristics for PV-panel roof mounting among the 3-common commercial roofs evaluated in these studies. These investigations were based on roof installations and local materials in Belo Horizonte, Brazil. |
| first_indexed | 2024-04-11T15:21:46Z |
| format | Article |
| id | doaj.art-be7235b39ded4a50bdb68a80f0586ee4 |
| institution | Directory Open Access Journal |
| issn | 2493-9439 |
| language | English |
| last_indexed | 2024-04-11T15:21:46Z |
| publishDate | 2022-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | Renewable Energy and Environmental Sustainability |
| spelling | doaj.art-be7235b39ded4a50bdb68a80f0586ee42022-12-22T04:16:21ZengEDP SciencesRenewable Energy and Environmental Sustainability2493-94392022-01-017510.1051/rees/2021051rees210048Roof-mounted photovoltaic generator temperatue modeling based on common brazil roofing materialsGuimarães Bernardo de Souza0https://orcid.org/0000-0001-7387-601XFarias Lucas1Filho Delly Oliveira2https://orcid.org/0000-0003-4133-0199Kazmerski Lawrence3Cardoso Diniz Antonia Sônia A.4https://orcid.org/0000-0002-4486-3049GREEN Solar-IPUC, PPGEM, Graduate Programme of Mechanical Engineering, Pontifícia Universidade Católica de Minas Gerais (PUCMinas)GREEN Solar-IPUC, PPGEM, Graduate Programme of Mechanical Engineering, Pontifícia Universidade Católica de Minas Gerais (PUCMinas)Universidade Federal de ViçosaUniversity of Colorado Boulder, RASEIGREEN Solar-IPUC, PPGEM, Graduate Programme of Mechanical Engineering, Pontifícia Universidade Católica de Minas Gerais (PUCMinas)This paper examines the performance of solar photovoltaic generators on roofs of residential buildings. The primary focus is the loss of performance due to temperature increase as function of roof material and the distance from the photovoltaic (PV) generator to the roof. A heat transfer model has been developed to predict PV module temperature, and the equations of the model were solved using the Engineering Equation Solver (EES) software. The research modeling correlates the distance of the solar generator to the roof and the roofing material with the temperature variations in the PV generator. There are many models to predict PV module temperature, but this study refines the prediction by the distance from PV module to roof and the roofing material as variables. Optimal combinations of distance and materials that minimize the heating loss in the solar generator leading to increased electrical power generation. Results show an average error of 3%–4% from the temperature predicted by the model to the temperature measured under experimental conditions in Belo Horizonte, Brazil. The minimum roof-module separation required to ensure minimal PV performance loss from heating from the roof is ∼10 cm for red ceramic and cement fiber roofs. For galvanized steel, the optimal distance is between 20 cm and 30 cm. Cement fiber shows the best predicted and measured characteristics for PV-panel roof mounting among the 3-common commercial roofs evaluated in these studies. These investigations were based on roof installations and local materials in Belo Horizonte, Brazil.https://www.rees-journal.org/articles/rees/full_html/2022/01/rees210048/rees210048.html |
| spellingShingle | Guimarães Bernardo de Souza Farias Lucas Filho Delly Oliveira Kazmerski Lawrence Cardoso Diniz Antonia Sônia A. Roof-mounted photovoltaic generator temperatue modeling based on common brazil roofing materials Renewable Energy and Environmental Sustainability |
| title | Roof-mounted photovoltaic generator temperatue modeling based on common brazil roofing materials |
| title_full | Roof-mounted photovoltaic generator temperatue modeling based on common brazil roofing materials |
| title_fullStr | Roof-mounted photovoltaic generator temperatue modeling based on common brazil roofing materials |
| title_full_unstemmed | Roof-mounted photovoltaic generator temperatue modeling based on common brazil roofing materials |
| title_short | Roof-mounted photovoltaic generator temperatue modeling based on common brazil roofing materials |
| title_sort | roof mounted photovoltaic generator temperatue modeling based on common brazil roofing materials |
| url | https://www.rees-journal.org/articles/rees/full_html/2022/01/rees210048/rees210048.html |
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