新风换气对室内氡浓度的影响  

Effect of Fresh Air Ventilation on Indoor Radon Concentration

作　　者：孙浩 吴建华 符适 

机构地区：[1]深圳市建筑科学研究院有限公司,广东深圳518049 [2]广东省建筑节能与应用技术重点实验室,广东深圳518049

出　　处：《原子能科学技术》2012年第8期1009-1013,共5页Atomic Energy Science and Technology

基　　金：十一五国家科技支撑计划课题资助项目(2006BAJ02A11)

摘　　要：使用RAD7测氡仪对氡模拟实验房进行氡浓度连续测量,研究不同新风换气率对室内氡浓度的影响。结果表明:氡模拟实验房内氡浓度最高可累积至2 000Bq/m3,墙面平均氡析出率为14.5Bq·m-2·h-1;氡模拟实验房在连续均匀地通入新风情况下,室内氡浓度随时间呈指数递减趋势;当新风换气率变化时,氡模拟实验房内的平衡氡浓度和平衡时间随新风换气率的增加呈指数递减趋势;当新风换气率由大变小时,室内氡浓度会再次累积增加。The radon concentration of laboratory for radon simulation（LRS） was mea-sured by the RAD7 radon monitor,and the effect of the different fresh air ventilations on indoor radon concentration was studied and analyzed.The indoor radon concentration of LRS can be accumulated up to 2 000 Bq/m3 and the average radon exhalation rate of the LRS is 14.5 Bq·m-2·h-1.Furthermore,when the fresh air enters into the LRS continuously,the indoor radon concentration decreases exponentially with the increase of time.The equilibrium radon concentration and equilibrium time of LRS decrease exponentially with the increase of the rate of fresh air ventilation.In addition,the indoor radon concentration increases by accumulation with the decrease of the rate of fresh air ventilation.

关 键 词：氡模拟实验房 室内氡浓度 新风换气率 

分 类 号：X591[环境科学与工程—环境工程]