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Influence of the Height in a Colombian Multi-Tunnel Greenhouse on Natural Ventilation and Thermal Behavior: Modeling Approach

Author

Listed:
  • Edwin Villagrán

    (Department of Biological and Environmental Sciences, Faculty of Natural Sciences and Engineering, Jorge Tadeo Lozano University, Bogotá 111321, Colombia)

  • Jorge Flores-Velazquez

    (Coordination of Hydrosciences, Postgraduate Collage, Carr Mex Tex km 36.5, Montecillo Edo de Mexico 62550, Mexico)

  • Mohammad Akrami

    (Department of Engineering, University of Exeter, Exeter EX4 4QF, UK)

  • Carlos Bojacá

    (Department of Biological and Environmental Sciences, Faculty of Natural Sciences and Engineering, Jorge Tadeo Lozano University, Bogotá 111321, Colombia)

Abstract

The dimensions of a passive greenhouse are one of the decisions made by producers or builders based on characteristics of the available land and the economic cost of building the structure per unit of covered area. In few cases, the design criteria are reviewed and the dimensions are established based on the type of crop and local climate conditions. One of the dimensions that is generally exposed to greater manipulation is the height above the gutter and the general height of the structure, since a greenhouse with a lower height has a lower economic cost. This has led some countries in the tropical region to build greenhouses that, due to their architectural characteristics, have inadequate microclimatic conditions for agricultural production. The objective of this study was to analyze the effect on air flows and thermal distribution generated by the increase of the height over gutter of a Colombian multi-tunnel greenhouse using a successfully two-dimensional computational fluid dynamics (CFD) model. The simulated numerical results showed that increasing the height of the greenhouse allows obtaining temperature reductions from 0.1 to 11.7 °C depending on the ventilation configuration used and the external wind speed. Likewise, it was identified that the combined side and roof ventilation configuration (RS) allows obtaining higher renovation indexes (RI) in values between 144 and 449% with respect to the side ventilation (S) and roof ventilation (R) configurations. Finally, the numerical results were successfully fitted within the surface regression models responses.

Suggested Citation

  • Edwin Villagrán & Jorge Flores-Velazquez & Mohammad Akrami & Carlos Bojacá, 2021. "Influence of the Height in a Colombian Multi-Tunnel Greenhouse on Natural Ventilation and Thermal Behavior: Modeling Approach," Sustainability, MDPI, vol. 13(24), pages 1-26, December.
    • Handle: RePEc:gam:jsusta:v:13:y:2021:i:24:p:13631-:d:698972
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    References listed on IDEAS

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    1. Edwin Villagran & Rommel Leon & Andrea Rodriguez & Jorge Jaramillo, 2020. "3D Numerical Analysis of the Natural Ventilation Behavior in a Colombian Greenhouse Established in Warm Climate Conditions," Sustainability, MDPI, vol. 12(19), pages 1-27, October.
    2. Edwin Villagran & Carlos Bojacá & Mohammad Akrami, 2021. "Contribution to the Sustainability of Agricultural Production in Greenhouses Built on Slope Soils: A Numerical Study of the Microclimatic Behavior of a Typical Colombian Structure," Sustainability, MDPI, vol. 13(9), pages 1-22, April.
    3. Saberian, Ayad & Sajadiye, Seyed Majid, 2019. "The effect of dynamic solar heat load on the greenhouse microclimate using CFD simulation," Renewable Energy, Elsevier, vol. 138(C), pages 722-737.
    4. Gloria Alexandra Ortiz Rocha & Maria Angelica Pichimata & Edwin Villagran, 2021. "Research on the Microclimate of Protected Agriculture Structures Using Numerical Simulation Tools: A Technical and Bibliometric Analysis as a Contribution to the Sustainability of Under-Cover Cropping," Sustainability, MDPI, vol. 13(18), pages 1-40, September.
    5. Mohammad Akrami & Akbar A. Javadi & Matthew J. Hassanein & Raziyeh Farmani & Mahdieh Dibaj & Gavin R. Tabor & Abdelazim Negm, 2020. "Study of the Effects of Vent Configuration on Mono-Span Greenhouse Ventilation Using Computational Fluid Dynamics," Sustainability, MDPI, vol. 12(3), pages 1-26, January.
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    Cited by:

    1. Chengkun Wang & Zhengyu Liu & Fengkai Zhang & Qian Guo & Zhao Dong & Peng Bai, 2024. "Heat Hazards in High-Temperature Tunnels: Influencing Factors, Disaster Forms, the Geogenetic Model and a Case Study of a Tunnel in Southwest China," Sustainability, MDPI, vol. 16(3), pages 1-17, January.

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