Cooling Effect of Mechanical Ventilation in Grape Greenhouse Based on CFD Numerical Simulation

Abstract:

The effect of air volume supplied by top mechanical ventilation on multi-span greenhouse temperature field is studied with different ambient temperatures through CFD numerical simulation. The cooling effects of different mechanical ventilation volumes are compared in the same ambient temperature conditions such as summer calm and high illumination. Thus, the best supply air volume is found to provide a theoretical support for mounting ventilator at multi-span greenhouse top for cooling. Results show that a smaller mechanical ventilation volume can meet the cooling requirements when temperature is lower outside greenhouse. However, single mechanical ventilation has been unable to meet the cooling requirement when ambient temperature is too high outside greenhouse.

• Periodical: Applied Mechanics and Materials (Volumes 448-453)
• Pages: 2890-2896
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.448-453.2890
• Online since: October 2013
• Authors: Ling Yu Cao, Jia Hua Wu, Yue Hu*, Xue Bo Gu, Wei Wei Liu, Hai Zhong Cao
• Keywords: Grape, Greenhouse Simulation, Mechanical Ventilation, Porous Medium

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