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CSME 2024/06
Volume 45 No.3
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293-302
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Experimental and Numerical investigation of the Cooling Process in Greenhouse Microclimate During the Summer Season
Abid Hasna a, Ahmed Ketata a, Mariem Lajnef b, Hamza Chiboub b and Zied Driss b
aMechanical engineering, Laboratory of Electromechanical Systems (LASEM), National Engineering School of Sfax (ENIS), University of Sfax (US).
bMechanical engineering, Laboratory of Electromechanical Systems (LASEM), National Engineering School of Sfax (ENIS), University of Sfax (US).
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Abstract:
The paper conducts a thorough analysis of the impact of the local four-season climate on greenhouse conditions, with a focus on high temperatures during the summer. A numerical study addresses the cooling processes, considering the Reynolds number effect and the influence of the shade screen on indoor temperature. Experimental setups and numerical models are employed, validated through comparisons with greenhouse prototype data. Four Reynolds number values are examined for their impact on airflow and Vapor Pressure Deficit (VPD) within agricultural greenhouses, revealing that inlet velocity directly influences temperature and velocity field maps. Notably, a comparative study highlights a 0.45 kPa increase in VPD at z=3.1 m with a Reynolds number of Re=60 compared to Re=120. The study underscores the importance of precise modeling and control for optimal agricultural management in Tunisia's central region, particularly in Sfax.
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Keywords: Greenhouse, Crop, Climate, CFD, Reynolds number, shade screen, VPD
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*Corresponding author; e-mail:
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©
2024
CSME , ISSN 0257-9731
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