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KMID : 1156220210470040330
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Journal of Environmental Health Sciences
2021 Volume.47 No. 4 p.330 ~ p.338
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Evaluation of Radon Concentration according to Mechanical Ventilation Systems in Apartments
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Choi Ji-Won
Hong Hyung-Jin
Lee Jeong-Sub
Yoo Ju-Hee
Park Bo-Ram
Kim Ga-Hyun
Yoon Sung-Won
Lee Cheol-Min
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Abstract
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Background: This study was conducted to provide background information for the proper management of radon contamination in apartments using mechanical ventilation facilities in residential environments.
Objectives: To this end, this study compared and evaluated changes in radon concentrations based on different operating intensities of mechanical ventilation with or without natural ventilation.
Methods: For the continuous measurement of radon concentrations, an RAD7 instrument was installed in four apartments equipped with a ventilation system. The measurements were done for comparison of ventilation types and different ventilation intensities ("high", "middle", "low").
Results: The results confirmed that both mechanical and natural ventilation sufficiently reduced the radon concentration in the apartments. In particular, mechanical ventilation at "high" intensity was the most effective. Natural ventilation combined with mechanical ventilation and then natural ventilation alone were the second and the third most effective, respectively.
Conclusions: When using ventilation to reduce indoor radon concentrations, it is most effective to operate mechanical ventilation ("high") or natural ventilation and mechanical ventilation at the same time. In cases where mechanical ventilation is available alone, it is recommended to operate it at a minimum of "middle" intensity.
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KEYWORD
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Indoor air qulity, mitigaion, multi-family housing, radon, ventilation
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