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Numerical Simulation of Temperature Decrease in Greenhouses with Summer Water-Sprinkling Roof

Author

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  • Jiaming Guo

    (College of Engineering, South China Agricultural University, Guangzhou 510642, China)

  • Yanhua Liu

    (Engineering Fundamental Teaching and Training Center, South China Agricultural University, Guangzhou 510642, China)

  • Enli Lü

    (College of Engineering, South China Agricultural University, Guangzhou 510642, China)

Abstract

Decreasing the temperature of a greenhouse in summer is very important for the growth of plants. To investigate the effects of a roof sprinkler on the heat environment of a greenhouse, a three-dimensional symmetrical model was built, in which a k - ε (k-epsilon) turbulent model, a DO (Discrete Ordinates) irrational model, a Semi-Implicit Method for Pressure-Linked Equations (SIMPLE) algorithm, and a multiphase model were used to simulate the effects of the roof sprinkler, at different flow rates. Based on the simulation results, it was found that the temperature could be further reduced under a proper sprinkle rate, and the temperature distribution in the film on the roof was more uniform. A test was conducted to verify the accuracy of the model, which proved the validity of the numerical results. The simulation results of this study will be helpful for controlling and optimizing the heat environment of a greenhouse.

Suggested Citation

  • Jiaming Guo & Yanhua Liu & Enli Lü, 2019. "Numerical Simulation of Temperature Decrease in Greenhouses with Summer Water-Sprinkling Roof," Energies, MDPI, vol. 12(12), pages 1-15, June.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:12:p:2435-:d:242587
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    References listed on IDEAS

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    Citations

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    Cited by:

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    2. Lin, Terry & Goldsworthy, Mark & Chavan, Sachin & Liang, Weiguang & Maier, Chelsea & Ghannoum, Oula & Cazzonelli, Christopher I. & Tissue, David T. & Lan, Yi-Chen & Sethuvenkatraman, Subbu & Lin, Han , 2022. "A novel cover material improves cooling energy and fertigation efficiency for glasshouse eggplant production," Energy, Elsevier, vol. 251(C).
    3. 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.
    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. Subin Mattara Chalill & Snehaunshu Chowdhury & Ramanujam Karthikeyan, 2021. "Prediction of Key Crop Growth Parameters in a Commercial Greenhouse Using CFD Simulation and Experimental Verification in a Pilot Study," Agriculture, MDPI, vol. 11(7), pages 1-23, July.
    6. Germán Díaz-Flórez & Jorge Mendiola-Santibañez & Luis Solís-Sánchez & Domingo Gómez-Meléndez & Ivan Terol-Villalobos & Hector Gutiérrez-Bañuelos & Ma. Araiza-Esquivel & Gustavo Espinoza-García & Juan , 2019. "Modeling and Simulation of Temperature and Relative Humidity Inside a Growth Chamber," Energies, MDPI, vol. 12(21), pages 1-22, October.
    7. Di Qi & Chuangyao Zhao & Shixiong Li & Ran Chen & Angui Li, 2021. "Numerical Assessment of Earth to Air Heat Exchanger with Variable Humidity Conditions in Greenhouses," Energies, MDPI, vol. 14(5), pages 1-18, March.

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