| Title |
A Study on the Control Method of Ventilating System for High Speed Train in a Tunnel |
| Keywords |
High speed train ; 고속전철 ; Ventilating system ; 환기시스템 ; Fans ; 송풍기 ; Tunnel ; 터널 ; Ear pains ; 이명현상 |
| Abstract |
The present study develops programs simulating the internal pressure change of cars due to the change of external pressure when trains run into or passing each other in a tunnel. A new continuous ventilating system control method has been developed in order to alleviate the aural discomfort of passengers riding a high speed train. This method is based on the change of the charged and discharged flow rate by detecting the air pressures generated outside and inside of the train. When the outside and inside pressures are detected, the speed of the charge or exhaust fans and also the valve opening ratios are changed. The elementary performance of the system is checked using data of the TGV-K high speed train at a speed of 300 km/h. Moreover, applicability of the system to the Korean high speed train at a speed of 350 km/h is ascertained by simulation and its effectiveness as a means to alleviate the ear pains is confirmed. This application of the system to the Korean high speed vehicles running in the speed range of 350 km/h is considered to have good prospect. |