CFD based simulation of indoor radon distribution from the use of different brands of decorative glazed tiles made in China

Wang, Xuexian; Feng, Guangwen; Liu, Qian; Wu, Baoshan; Hu, Youhua

doi:10.1080/10420150.2021.1881784

Cited by 2 publications

(4 citation statements)

References 24 publications

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“…In a national survey of China, it was found that the average indoor radon concentration was 22.5 Bq/m 3 from 1984 to 1990 45 but 54.6 Bq/m 3 from 2000 to 2020, 23 which may indicate an increase trend of residential radon concentration China. Besides, China have more newly constructed buildings with extensive decoration in recent two decades due to the economic development 46 . At the same time, China has a large population, serious air pollution, and high smoking rate 33 .…”

Section: Discussionmentioning

confidence: 99%

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A global burden assessment of lung cancer attributed to residential radon exposure during 1990–2019

et al. 2022

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This study aimed to explore the spatial and temporal trends of lung cancer burden attributable to residential radon exposure at the global, regional, and national levels. Based on the Global Burden of Disease Study (GBD) 2019, we collected the age‐standardized mortality rate (ASMR) and age‐standardized disability‐adjusted life rate (ASDR) of lung cancer attributable to residential radon exposure from 1990 to 2019. The Joinpoint model was used to calculate the annual average percentage change (AAPC) to evaluate the trend of ASMR and ASDR from 1990 to 2019. The locally weighted regression (LOESS) was used to estimate the relationship of the socio‐demographic index (SDI) with ASMR and ASDR. In 2019, the global ASMR and ASDR for lung cancer attributable to residential radon exposure were 1.03 (95% CI: 0.20, 2.00) and 22.66 (95% CI: 4.49, 43.94) per 100 000 population, which were 15.6% and 23.0% lower than in 1990, respectively. According to the estimation, we found the lung cancer burden attributable to residential radon exposure declined significantly in high and high‐middle SDI regions, but substantially increased in middle and low‐middle SDI regions from 1990 to 2019. Across age and sex, the highest burden of lung cancer attributable to residential radon exposure was found in males and elderly groups. In conclusion, the global burden of lung cancer attributable to residential radon exposure showed a declining trend from 1990 to 2019, but a relatively large increase was found in the middle SDI regions. In 2019, the burden of lung cancer attributable to residential radon exposure remained high, particularly in males, the elderly, and high‐middle SDI regions compared with other groups.

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Section: Discussionmentioning

confidence: 99%

“…Besides, China have more newly constructed buildings with extensive decoration in recent two decades due to the economic development. 46 At the same time, China has a large population, serious air pollution, and high smoking rate. 33 What's more, the education level is not high enough to monitor and prevent radon exposure well.…”

Section: Discussionmentioning

confidence: 99%

A global burden assessment of lung cancer attributed to residential radon exposure during 1990–2019

et al. 2022

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“…The details of the boundary conditions are presented in the Table 1. The boundary condition of radon decay on the walls is simplified by (∂C j )/∂n= 0, where n is the direction normal to the wall [6].…”

Section: Boundary Conditions and Input Datamentioning

confidence: 99%

“…More recently, CFD (Computational Fluid Dynamics) simulation has taken on a distinct place in the study of the behavior of radon in indoor air. Many researchers have predicted the behavior and distribution of radon in buildings, apartments, offices, and schools, using CFD simulations [2][3][4][5][6][7][8][9]. Despite the importance of these studies, the evaluation of the influence of meteorological parameters on the behavior of radon and its descendants in indoor air has not been fully investigated using CFDs.…”

Section: Introductionmentioning

confidence: 99%

Modeling of the Distribution of Radon and Its Decay in a Traditional Hammam: Dose to Adult Members of the Public

Rabi¹,

Oufni²,

Youssoufi³

et al. 2021

AJEP

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Radon and its descendants are the main causes of lung cancer in non-smokers. Therefore, the study of the behavior of radon and its descendants in indoor air is of the highest importance, in ordre to limit the risk of radiation dose due to inhalation of indoor air by members of the public. This article focuses to study the effect of meteorological parameters on the concentration and distribution of radon and its descendants inside a traditional Hammam by using CFD simulation. The results of modeling are qualitative and show that the concentration and distribution of radon and its descendants decrease when the ventilation rate increases, as well as, as the temperature increases; however, it increases with the increase relative humidity. Moreover, the committed equivalent doses due to 218 Po and 214 Po radon short-lived progeny were evaluated in different tissues of the respiratory tract of the members of the public from the inhalation of air inside the traditional Hammam. The influence of the activity of 218 Po and 214 Po and mass of the tissue on the committed equivalent doses per hour of exposure was investigated. The annual effective dose due to radon short-lived progeny from the inhalation of air inside the traditional Hammam by the members of the public was investigated.

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CFD based simulation of indoor radon distribution from the use of different brands of decorative glazed tiles made in China

Cited by 2 publications

References 24 publications

A global burden assessment of lung cancer attributed to residential radon exposure during 1990–2019

A global burden assessment of lung cancer attributed to residential radon exposure during 1990–2019

Modeling of the Distribution of Radon and Its Decay in a Traditional Hammam: Dose to Adult Members of the Public

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