Design of an efficient suction system for PM removing vehicle in subway tunnel

초록

In subway tunnel, special dust cleaning vehicle is being operated to remove various particular matters (PM) and contaminated particles. The vehicle also requires high efficiency of duct structure and suction system. In order to enhance the efficiency of PM removal rate of the suction system under the cleaning vehicle, this paper conducted particle flow analysis by using a computational fluid dynamics tool both with air blower and suction fan. The results show that there are optimal parameters such as nozzle location in the design of the suction system. Additionally, we have presented that a simple and control flow device can contribute on regulating the flow velocity at the suction system