摘要
介绍了美国气载放射性排出物取样与监测标准中推荐的气溶胶粒子管道损失的估算方法 ,重点介绍了粒子在取样管路的入口、弯头和不同方位角的直管段中产生壁损失的计算方法及计算公式应用的注意事项。这些估算方法可编制成管道损失计算软件 ,正确应用估算方法和计算软件 ,不仅可对现有烟囱取样系统给以评价 ,为烟囱取样系统设计提供依据 ,也可能为取样系统管道损失的监测或监控提供技术基础。最后将估算方法的应用与计算结果同部分实验数据和国外的某些计算结果作了对比。
The methods of calculating aerosol particle loss in sampling lines are introduced. These methods are recommended by the foreign standards of sampling and monitoring airborne radioactive releases from the stacks and ducts. The losses of particle in a sampling system consist of the wall loss in nozzles, straight tubes with an angle relative to vertical direction and bends. The calculating software can be developed on the basis of the methods. In the paper, some calculated results provided here are compared with the calculated results abroad and the experimental data. The calculating methods or the software of the line losses are not only the basis for the evaluation of existing stacks sampling systems and the design of new sampling systems, but also for the monitoring of sampling duct loss.
出处
《辐射防护通讯》
2004年第2期8-13,共6页
Radiation Protection Bulletin
