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Ventilation modes and greenhouse structures affect 222Rn concentration in greenhouses in China |
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| Authors: | Yang Rong Zhang Xiaowen Ye Xiaochun Wang Changming Li Xiangyang |
| Institution: | 1.School of Resource & Environment and Safety Engineering, University of South China, Hengyang, 421001, Hunan, China ;2.Hunan Province Engineering Research Center of Radioactive Control Technology in Uranium Mining and Metallurgy, University of South China, Hengyang, 421001, Hunan, China ;3.Hunan Province Engineering Technology Research Center of Uranium Tailings Treatment Technology, University of South China, Hengyang, 421001, Hunan, China ; |
| Abstract: | The influences of ventilation modes and greenhouse structures on radon concentrations in single- and multi-span plastic film greenhouses were studied to find effective engineering measures for controlling indoor radon by numerical simulation. The plants and mulch on ground, and sealing conditions had been considered to ensure the accuracy of simulation. Ventilation mode obviously influenced the indoor radon concentration and distribution, while the ventilation wind speed and structural form exerted no clear influence. Mechanical ventilation could reduce radon concentration to a greater extent than natural ventilation, and side-face ventilation was superior to end-face ventilation. |
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