Dynamic Analysis of the Natural and Mechanical Ventilation of a Solar Greenhouse by Coupling Controlled Mechanical Ventilation (CMV) with an Earth-to-Air Heat Exchanger (EAHX)
Greenhouse crops represent a significant productive sector of the agricultural system; one of the main problems to be addressed is indoor air conditioning to ensure thermal well-being of crops. This study focuses on the ventilation analysis of solar greenhouse with symmetrical flat pitched roof and...
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| Formato: | Artigo |
| Idioma: | English |
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MDPI AG
2020-07-01
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| coleção: | Energies |
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| Acesso em linha: | https://www.mdpi.com/1996-1073/13/14/3676 |
| _version_ | 1827712959245189120 |
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| author | Sara Bonuso Simone Panico Cristina Baglivo Domenico Mazzeo Nicoletta Matera Paolo Maria Congedo Giuseppe Oliveti |
| author_facet | Sara Bonuso Simone Panico Cristina Baglivo Domenico Mazzeo Nicoletta Matera Paolo Maria Congedo Giuseppe Oliveti |
| author_sort | Sara Bonuso |
| collection | DOAJ |
| description | Greenhouse crops represent a significant productive sector of the agricultural system; one of the main problems to be addressed is indoor air conditioning to ensure thermal well-being of crops. This study focuses on the ventilation analysis of solar greenhouse with symmetrical flat pitched roof and single span located in a warm temperate climate. This work proposes the dynamic analysis of the greenhouse modeled in TRNsys, simultaneously considering different thermal phenomena three-dimensional (3D) shortwave and longwave radiative exchange, airflow exchanges, presence of lamps with their exact 3D position, ground and plant evapotranspiration, and convective heat transfer coefficients. Several air conditioning systems were analyzed, automatic window opening, controlled mechanical ventilation systems (CMV) and horizontal Earth-to-Air Heat Exchanger (EAHX) coupled with CMV, for different air volume changes per hour. In summer, the exploitation of the ground allows having excellent results with the EAHX system, reducing the temperature peaks of up to 5 °C compared to the use of CMV. In winter, it is interesting to note that, although the EAHX is not the solution that raises the temperature the most during the day, its use allows flattening the thermal wave more. In fact, the trend is almost constant during the day, raising the temperature during the first and last hours of the day. |
| first_indexed | 2024-03-10T18:25:34Z |
| format | Article |
| id | doaj.art-2eca7587296b42de9b266430ec319056 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T18:25:34Z |
| publishDate | 2020-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-2eca7587296b42de9b266430ec3190562023-11-20T07:00:55ZengMDPI AGEnergies1996-10732020-07-011314367610.3390/en13143676Dynamic Analysis of the Natural and Mechanical Ventilation of a Solar Greenhouse by Coupling Controlled Mechanical Ventilation (CMV) with an Earth-to-Air Heat Exchanger (EAHX)Sara Bonuso0Simone Panico1Cristina Baglivo2Domenico Mazzeo3Nicoletta Matera4Paolo Maria Congedo5Giuseppe Oliveti6Department of Engineering for Innovation, University of Salento, Via per Arnesano, It-73100 Lecce, ItalyEurac Research, Institute for Renewable Energies, Viale Druso 1, 39100 Bolzano, ItalyDepartment of Engineering for Innovation, University of Salento, Via per Arnesano, It-73100 Lecce, ItalyDepartment of Mechanical, Energy and Management Engineering (DIMEG), University of Calabria, P. Bucci Cube 46/C, It-87036 Arcavacata of Rende (CS), ItalyDepartment of Mechanical, Energy and Management Engineering (DIMEG), University of Calabria, P. Bucci Cube 46/C, It-87036 Arcavacata of Rende (CS), ItalyDepartment of Engineering for Innovation, University of Salento, Via per Arnesano, It-73100 Lecce, ItalyDepartment of Mechanical, Energy and Management Engineering (DIMEG), University of Calabria, P. Bucci Cube 46/C, It-87036 Arcavacata of Rende (CS), ItalyGreenhouse crops represent a significant productive sector of the agricultural system; one of the main problems to be addressed is indoor air conditioning to ensure thermal well-being of crops. This study focuses on the ventilation analysis of solar greenhouse with symmetrical flat pitched roof and single span located in a warm temperate climate. This work proposes the dynamic analysis of the greenhouse modeled in TRNsys, simultaneously considering different thermal phenomena three-dimensional (3D) shortwave and longwave radiative exchange, airflow exchanges, presence of lamps with their exact 3D position, ground and plant evapotranspiration, and convective heat transfer coefficients. Several air conditioning systems were analyzed, automatic window opening, controlled mechanical ventilation systems (CMV) and horizontal Earth-to-Air Heat Exchanger (EAHX) coupled with CMV, for different air volume changes per hour. In summer, the exploitation of the ground allows having excellent results with the EAHX system, reducing the temperature peaks of up to 5 °C compared to the use of CMV. In winter, it is interesting to note that, although the EAHX is not the solution that raises the temperature the most during the day, its use allows flattening the thermal wave more. In fact, the trend is almost constant during the day, raising the temperature during the first and last hours of the day.https://www.mdpi.com/1996-1073/13/14/3676solar greenhouseTRNsysgeothermal sourceventilationenergy |
| spellingShingle | Sara Bonuso Simone Panico Cristina Baglivo Domenico Mazzeo Nicoletta Matera Paolo Maria Congedo Giuseppe Oliveti Dynamic Analysis of the Natural and Mechanical Ventilation of a Solar Greenhouse by Coupling Controlled Mechanical Ventilation (CMV) with an Earth-to-Air Heat Exchanger (EAHX) Energies solar greenhouse TRNsys geothermal source ventilation energy |
| title | Dynamic Analysis of the Natural and Mechanical Ventilation of a Solar Greenhouse by Coupling Controlled Mechanical Ventilation (CMV) with an Earth-to-Air Heat Exchanger (EAHX) |
| title_full | Dynamic Analysis of the Natural and Mechanical Ventilation of a Solar Greenhouse by Coupling Controlled Mechanical Ventilation (CMV) with an Earth-to-Air Heat Exchanger (EAHX) |
| title_fullStr | Dynamic Analysis of the Natural and Mechanical Ventilation of a Solar Greenhouse by Coupling Controlled Mechanical Ventilation (CMV) with an Earth-to-Air Heat Exchanger (EAHX) |
| title_full_unstemmed | Dynamic Analysis of the Natural and Mechanical Ventilation of a Solar Greenhouse by Coupling Controlled Mechanical Ventilation (CMV) with an Earth-to-Air Heat Exchanger (EAHX) |
| title_short | Dynamic Analysis of the Natural and Mechanical Ventilation of a Solar Greenhouse by Coupling Controlled Mechanical Ventilation (CMV) with an Earth-to-Air Heat Exchanger (EAHX) |
| title_sort | dynamic analysis of the natural and mechanical ventilation of a solar greenhouse by coupling controlled mechanical ventilation cmv with an earth to air heat exchanger eahx |
| topic | solar greenhouse TRNsys geothermal source ventilation energy |
| url | https://www.mdpi.com/1996-1073/13/14/3676 |
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