Study on relationship between indoor radon concentration and air exchange rate for new residential buildings
10.3760/cma.j.issn.0254-5098.2017.06.010
- VernacularTitle:新建居住建筑物室内氡浓度与换气率关系研究
- Author:
Yunyun WU
;
Aihua MEI
;
Yonggui ZHANG
;
Junlin WANG
;
Bing SHANG
;
Hongxing CUI
- Keywords:
New residential building;
Energy-saving design;
Indoor;
Radon concentration;
Air exchange rate
- From:
Chinese Journal of Radiological Medicine and Protection
2017;37(6):451-455
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the relationship between indoor radon concentration and air exchange rate for new residential building.Methods The indoor radon concentration and air exchange rate were measured in two new roughcast houses in Guangzhou and Hefei,respectively.The radon concentration was measured using radon instrument.The air exchange rate was measured by using tracer gas dilution method.Results The indoor radon concentrations measured in Guanzhou for two bedrooms in a 48-hour closed condition were 106 and 115 Bq/m3,the range of 17-181 and 6-224 Bq/m3.Air exchange rates were 0.16/h and 0.21/h.In Hefei,the twice measured values for one bedroom were 148 and 186 Bq/m3,the range of 8-224 and 14-290 Bq/m3,and air exchange rates were 0.14/h and 0.12/h.The indoor radon concentration exponentially decreased with the increase of air exchange rates.Conclusions Attention should be paid to the indoor radon pollution issue that may arise in new residential buildings of energy-saving design due to low air exchange rate.
