相对湿度及运行时间对通风系统中碘吸附器除碘效率的影响
Effects of airflow relative humidity and operation time on iodine removal efficiency of iodine adsorbers in ventilation systems
摘要：
采用放射性甲基碘法对全尺寸碘吸附器在可调节气流相对湿度的整机试验台架上进行了试验，研究了空气相对湿度及运行时间对碘吸附器除碘效率的影响。结果表明：碘吸附器除碘效率在气流相对湿度小于60%时无明显变化，在接近或大于70%时开始下降，在大于90%时下降速率加快；气流相对湿度对碘吸附器除碘效率的影响可逆，低相对湿度的气流可以将受过高湿度气流影响的碘吸附器除碘效率恢复到影响前的水平；碘吸附器在设定湿度条件下运行48 h，除碘效率与运行时间无明显相关性。
Abstract：
The radioactive methyl iodide method is used to test the full-size iodine adsorber with the whole performance test system which can adjust the relative humidity of airflow. Studies the effect of the relative humidity of airflow and the operating time on the iodine removal efficiency of iodine adsorbers.The results show that the iodine removal efficiency of iodine adsorber does not change significantly when the relative humidity of airflow is less than 60%, begins to decrease when the relative humidity of airflow is close to or greater than 70%, and the rate of decline increases when the relative humidity of the airflow is greater than 90%. The influence of the iodine adsorber is reversible, and the low relative humidity airflow can restore the iodine removal efficiency of the iodine adsorber affected by the excessively high humidity airflow to the level before the influence. When the iodine adsorber runs for 48 hours under the set humidity condition, the iodine removal efficiency has no relation to the running time.
Keywords:iodineadsorber,iodineremovalefficiency,ventilationsystem,relativehumidity,operationtime