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| Research on Numerical Simulation of Radon Distribution in Underground Garage |
| Received:September 29, 2020 Revised:October 27, 2020 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2021.04.014 |
| KeyWord:radon concentration underground garage indoor temperature numerical simulation |
| Author | Institution |
| MENG De-yu |
School of Civil Engineering, Hengyang , China |
| WANG Han-qing |
School of Environmental Protection and Safety Engineering, University of South China, Hengyang , China |
| LI Cheng-jun |
School of Environmental Protection and Safety Engineering, University of South China, Hengyang , China |
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| Abstract: |
| The paper aims to research on the concentration distribution of radon in underground garages, and puts forward some suggestions to improve the control of radon in underground garages. By calculating radon exhalation rate of underground garages and establishing the geometric model, numerical simulation are conducted to evaluate the effect of indoor temperature, air change rate and air distribution on indoor radon concentration. The result shows that the average radon concentration level is at the lowest value when the indoor temperature is 5 ℃, and at the highest value when the temperature is 35 ℃, reflecting that the increase of temperature can weaken the effect of ventilation and radon exhaust. When the number of ventilation is 1 AC/H, the indoor radon concentration has met the requirements of the specification. Therefore, in the case of mechanical ventilation, when the number of indoor ventilation exceeds 1 AC/H, it can be considered that the indoor radon exhaust capacity is sufficient. Besides, a feasible method for improving radon removal efficiency of ventilation is adopting reasonable air organization to ensure air flowing through the workspace. |
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