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Enhancement of evaporative cooling system in a greenhouse using geothermal energy

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  • Aljubury, Issam M. Ali
  • Ridha, Hind Dhia'a

Abstract

In desert climates cooling greenhouses are needed to protect crops from extremely high temperature. In Iraq, outside air temperature can reach 50 °C during the summer, which makes greenhouses unworkable in this season. So, this work was trying to overcome this situation and to examine the feasibility of greenhouse cooling using groundwater in the indirect-direct evaporative cooling (IDEC) unit. For this purpose, a two-stage evaporative cooling experimental setup consists of one indirect evaporative cooling heat exchanger and three pads as a direct evaporative cooling designed, constructed, and analyzed. A series of experimental tests were carried out in June, July, and August 2015 during the summer of Baghdad with different parameters. The results show that the use of groundwater enhanced IDEC unit efficiency up to 108% compared with a direct evaporative cooling efficiency that recorded 77.5%. Using covering layers reduced the intensity of solar entering the greenhouse from 15% for a single layer to 40% in the case of two layers with one layer of green mesh.

Suggested Citation

  • Aljubury, Issam M. Ali & Ridha, Hind Dhia'a, 2017. "Enhancement of evaporative cooling system in a greenhouse using geothermal energy," Renewable Energy, Elsevier, vol. 111(C), pages 321-331.
    • Handle: RePEc:eee:renene:v:111:y:2017:i:c:p:321-331
    DOI: 10.1016/j.renene.2017.03.080
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    Cited by:

    1. Luo, Xilian & Chang, Bin & Tian, Wei & Li, Juan & Gu, Zhaolin, 2019. "Experimental study on local environmental control for historical site in archaeological museum by evaporative cooling system," Renewable Energy, Elsevier, vol. 143(C), pages 798-809.
    2. Omar, M.N. & Taha, A.T. & Samak, A.A. & Keshek, M.H. & Gomaa, E.M. & Elsisi, S.F., 2021. "Simulation and validation model of cooling greenhouse by solar energy (P V) integrated with painting its cover and its effect on the cucumber production," Renewable Energy, Elsevier, vol. 172(C), pages 1154-1173.

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