Study on the effect of Fresh Air Ventilation system for reducing indoor ^(222)Rn

作     者：Yanchao Song Dexing Lian Hongxing Cui Changsong Hou Yunyun Wu Yanchao Song;Dexing Lian;Hongxing Cui;Changsong Hou;Yunyun Wu

作者机构：Key Laboratory of Radiological Protection and Nuclear EmergencyNational Institute for Radiological ProtectionChinese Center for Disease Control and PreventionBeijing 100088China National Center for Occupational Safety and HealthNHCBeijing 102308China 

出 版 物：《Radiation Medicine and Protection》 (放射医学与防护（英文）)

年 卷 期：2024年第5卷第1期

页      面：49-52页

核心收录：

学科分类：0831[工学-生物医学工程（可授工学、理学、医学学位）] 100207[医学-影像医学与核医学] 1006[医学-中西医结合] 1002[医学-临床医学] 1001[医学-基础医学(可授医学、理学学位)] 08[工学] 1010[医学-医学技术（可授医学、理学学位）] 100106[医学-放射医学] 100602[医学-中西医结合临床] 10[医学] 

基　　金：Anhui Prevention and Treatment Center for Occupational Diseases 

主　　题：FAVS Rn Decay product Air exchange rate 

摘      要：Objective:To explore the reduction effect for the indoor ^(222)Rn(Rn)by Fresh Air Ventilation(FAV)system,a novel commercial ventilation device in ***:The indoor concentrations of Rn and its decay products(RnD)in three residential rooms,two in Beijing and one in Hefei city,Anhui province,before and after FAVS functioned were measured using an active continuous *** air exchange rate was monitored by measuring CO_(2) concentration using the tracer gas ***:In the three rooms,the FAVS reduced the Rn concentrations from(162±80)Bq/m^(3) to(63±22)Bq/m^(3) and decreased the RnD concentrations from(64±35)Bq/m^(3) to(13±6)Bq/m^(3) on average,a decrease of(59±25)% in the Rn concentrations and a drop of(77±18)%in the RnD *** dose conversion factors of Rn and RnD,FAVS decreased the exposure dose by(76±20)%.Besides,FAVS increased the air exchange rates from 0.17 h^(-1) to 0.56 h^(-1) on ***:FAVS can effectively reduce indoor Rn and RnD concentrations by improving the air exchange,serving as a valuable supplement to existing radon mitigation methods,especially in extreme climates.