Effect of Fans to Minimize the Air Pollution during Door Opening in Winter Season for a Train Cabin

초록

Public interest on the indoor air quality of train cabin is increasing, and various methods to keep the clean cabin indoor air are suggested recently. One of those method is to minimize the unwated polluted air inflow into the train cabin. In this study, a conventional fan was installed inside the cabin to minimize the inflow of polluted ambient air into the cabin during door opening in winter season. The inflow of outside air into the cabin could be indirectly investigated by monitoring the temperature change during door opening with and without the operation of a conventional fan inside the cabin. The location and the height of the fan was varied to find the optimal installation location and the optimal operating condition. It was found that the ambient air came into the cabin mostly thorugh lower part of the opened door, and the operation of fan could reduce this inflow of outside air into the cabin. A novel method for the practical application of this system to reduce the inflow of polluted outside air into the cabin was also suggest in this study.