Comparison of Indoor Radon Reduction Effects Based on Apartment Housing Ventilation Methods

Atmosphere

Hyongjin Hong¹  Jiwon Choi¹  Eun-Min Cho¹  Cheolmin Lee¹  Jeongsub Lee²  Seonhong Kim²  Boram Park²  Gahyun Kim² 

[1] Department of Environmental Chemical Engineering, Seokyeong University, Seoul 02713, Korea;Indoor Environment and Noise Research Division, National Institute of Environmental Research, Incheon 22689, Korea;

关键词: indoor air quality;    mitigation;    apartment;    radon;    ventilation;   

DOI  :  10.3390/atmos13020204

来源: DOAJ

【 摘 要 】

A lack of ventilation in multi-unit dwellings can affect human health adversely owing to accumulated radon gases; therefore, developing immediate and effective methods to reduce radon gas in indoor living environments is urgently needed. Therefore, this study conducted a basic research study to develop ventilation guidelines for radon through assessments of various ventilation strategies on indoor radon concentration in multiple-unit dwellings, a typical residential type in Korea. Radon measurement was conducted in November 2020 using RAD 7 Radon Detector (Durridge Co., Billerica, MA, USA) for living rooms and rooms of an apartment located in Uijeongbu, Gyeonggi-do, Korea. The radon reduction effect according to the ventilation conditions per hour was compared and evaluated by performing seven natural ventilation scenarios through opening and closing windows leading to the outside and three types of mechanical ventilation with high, middle, and low operating intensity. The concentration ratio (C_r) was estimated to present the indoor radon increase/decrease ratio. Among the natural ventilation scenarios, Case 3 had the highest radon reduction rate in the living room and Case 1 in the room, and Case 2 using natural ventilation equipment showed the lowest reduction rate in both the room and the living room. When ventilated by mechanical ventilation conditions, the radon reduction rate (P_r) was 70% or less under all conditions. Under the natural ventilation measurement condition, when every doors and windows was opened, it showed an effective ventilation in a short time. With high mechanical ventilation, the radon reduction effect in a relatively large space was better. Additionally, with middle and low mechanical ventilation, the reduction effect seems to be good in a relatively narrow space.

【 授权许可】

Unknown