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)

Sara Bonuso, Simone Panico, Cristina Baglivo, Domenico Mazzeo, Nicoletta Matera, Paolo Maria Congedo and Giuseppe Oliveti
Additional contact information
Sara Bonuso: Department of Engineering for Innovation, University of Salento, Via per Arnesano, It-73100 Lecce, Italy
Simone Panico: Eurac Research, Institute for Renewable Energies, Viale Druso 1, 39100 Bolzano, Italy
Cristina Baglivo: Department of Engineering for Innovation, University of Salento, Via per Arnesano, It-73100 Lecce, Italy
Domenico Mazzeo: Department of Mechanical, Energy and Management Engineering (DIMEG), University of Calabria, P. Bucci Cube 46/C, It-87036 Arcavacata of Rende (CS), Italy
Nicoletta Matera: Department of Mechanical, Energy and Management Engineering (DIMEG), University of Calabria, P. Bucci Cube 46/C, It-87036 Arcavacata of Rende (CS), Italy
Paolo Maria Congedo: Department of Engineering for Innovation, University of Salento, Via per Arnesano, It-73100 Lecce, Italy
Giuseppe Oliveti: Department of Mechanical, Energy and Management Engineering (DIMEG), University of Calabria, P. Bucci Cube 46/C, It-87036 Arcavacata of Rende (CS), Italy

Energies, 2020, vol. 13, issue 14, 1-22

Abstract: 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.

Keywords: solar greenhouse; TRNsys; geothermal source; ventilation; energy (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

Downloads: (external link)
https://www.mdpi.com/1996-1073/13/14/3676/pdf (application/pdf)
https://www.mdpi.com/1996-1073/13/14/3676/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:13:y:2020:i:14:p:3676-:d:385595

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().