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Modified plastic net-houses as alternative agricultural structures for saving energy and water in hot and sunny regions

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  • Abdel-Ghany, A.M.
  • Al-Helal, I.M.
  • Picuno, P.
  • Shady, M.R.

Abstract

The transmitted radiation into the conventional net-houses is very low in the early morning and late afternoon that may not fulfill the crop growth requirements. To solve this problem, two types of net-house models (polygon and curved-arch net-houses) were newly designed, each having seven surfaces made up of different net types. The spectral radiative properties of 32 nets were examined and three nets were selected to cover the surfaces of each model. The two designs showed high transmittance in the morning and afternoon, and low at around noon (U shape). The polygon style was scaled-up and an experiential net-house was constructed with a floor area of 28 m2. An evaporatively-cooled greenhouse with a floor area of 28 m2 was used for comparison; each floor was planted with 500 potted Chrysanthemum plant. The results showed that the PAR and microclimate in the net-house and cooled greenhouse were similar. The net-house reduced water consumption by 13 kg m−2 day−1 in summer and by 0.94 kg m−2 day−1 in winter; and reduced electric energy consumption by 0.26 kw-h m−2 day−1 in summer and by 0.18 kw-h m−2 day−1 in winter compared to the greenhouse.

Suggested Citation

  • Abdel-Ghany, A.M. & Al-Helal, I.M. & Picuno, P. & Shady, M.R., 2016. "Modified plastic net-houses as alternative agricultural structures for saving energy and water in hot and sunny regions," Renewable Energy, Elsevier, vol. 93(C), pages 332-339.
    • Handle: RePEc:eee:renene:v:93:y:2016:i:c:p:332-339
    DOI: 10.1016/j.renene.2016.02.084
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    References listed on IDEAS

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    1. Abdel-Ghany, Ahmed M. & Kozai, Toyoki, 2006. "Dynamic modeling of the environment in a naturally ventilated, fog-cooled greenhouse," Renewable Energy, Elsevier, vol. 31(10), pages 1521-1539.
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    Cited by:

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    2. 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.

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