Hi-TECH TUNNEL

4 features that are discussed in the model:

• Aerodynamic entrance.• Power generation using air turbine.• Automatic lightening of tunnel.• Electrostatic precipitator (ESP).

CONVENTIONAL TUNNEL ENTRANCE

:

AERODYNAMIC ENTRANCE

POWER GENERATION USING AIR TURBINE

o AIR TURBINE IS PLACED PARALLEL TO THE MOTION OF TRAIN BESIDES THE TRACK.

o SPEEDING TRAIN ENTERING THE TUNNEL FORCES THE AIR TO ROTATE TURBINE BLADES.

AUTOMATIC LIGHTING OF TUNNEL

HOW WE CAN GET LIGHT AUTOMATICALLY

There is a spring loaded key below the track. Now, as the train enters in to the tunnel, the weight of the train pushes the key and the circuit gets completed which lights up the tunnel.

As the train passes the tunnel the key

ELECTROSTATIC PRECIPITATOR

NEED OF ESP :-In the case of long tunnel, problem of insufficientvisibility is sometimes caused by diesel engine. To keep driver’s visibility,electrostatic precipitator (ESP) has been installed in by-pass tunnel of the main tunnel.

HOW IT WORKS :-

First, the smoke generated by engine is drawn in to the by pass tunnel. As this smoke contains harmful particulates, ESP purifies it and pass to auxiliary m/c room where further purifying process is done and this sends the smoke to air duct and finally a purified air is discharged through induced draft fan

View of ESP By-pass tunnel