Heat Recovery Potential in a Semi-Closed Greenhouse for Tomato Cultivation

Abdelouhab Labihi, Paul Byrne (), Amina Meslem, Florence Collet and Sylvie Prétot
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Abdelouhab Labihi: Laboratoire Génie Civil et Génie Mécanique (LGCGM), University of Rennes, 35000 Rennes, France
Paul Byrne: Laboratoire Génie Civil et Génie Mécanique (LGCGM), University of Rennes, 35000 Rennes, France
Amina Meslem: Laboratoire Génie Civil et Génie Mécanique (LGCGM), University of Rennes, 35000 Rennes, France
Florence Collet: Laboratoire Génie Civil et Génie Mécanique (LGCGM), University of Rennes, 35000 Rennes, France
Sylvie Prétot: Laboratoire Génie Civil et Génie Mécanique (LGCGM), University of Rennes, 35000 Rennes, France

Clean Technol., 2023, vol. 5, issue 4, 1-27

Abstract: This study first presents the development and the experimental validation of a numerical model of a semi-closed greenhouse using a dynamic thermal simulation. The second objective was to identify the influential parameters on the indoor climate and to calculate the heating demand of the greenhouse. The model reproduced the behavior of a full-scale experimental greenhouse in Carquefou (France). The comparison with experimental measurements recorded over an entire season of tomato cultivation validated the numerical model. The result of the simulated energy consumption was 310 kWh/m 2 /year with a relative error of 3.5%. The parametric study identified that the evapotranspiration power and ventilation rate were the most influential input variables, accounting for 50% and 32%, respectively, of the heating demand. The most sensitive output variable was indoor humidity. The presence of a thermal buffer zone all around the greenhouse reduced the energy consumption by 48%, and thermal/shading screens reduced it by 30%. The final objective was to assess the amount of heat recovery potential over the year and each week, depending on the energy storage strategy. Around 43 kWh/m 2 /year can be recovered over the year, leading to a potential energy savings of 24%.

Keywords: heat recovery; semi-closed greenhouse; dynamic thermal simulation; evapotranspiration; humidity management (search for similar items in EconPapers)
JEL-codes: Q2 Q3 Q4 Q5 (search for similar items in EconPapers)
Date: 2023
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Persistent link: https://EconPapers.repec.org/RePEc:gam:jcltec:v:5:y:2023:i:4:p:58-1185:d:1245528

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