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Reusing Dynamic Braking Power on Dieasals instaed of Dispersing it as heat
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We all need to step back and cool off a little. I do not want to see any fights on the internet. <br /> <br />A comment or two on flywheels. They work in stationary applications very well, but in a moving situation I question its viability. The flywheel essentially is a gyroscope. We all remember as a kid the small fist sized gyroscopes we would hold and how hard it would be to turn our hand with the gyroscope spinning. Think what the train would do with a large flywheel as it went around a bend. The train would tend to go straight and this is not what the Class 1's want to happen. Of course the track could be designed to follow the precessing of the gyroscope and not have the car leave the track. Unfortunately bending the track in the direction that the gyroscope processes may not lead to where the next station is. <br /> <br />Hydrogen also has several problems. Hydrogen tends to be adsorbes into steel which causes hydrogen embrittlement. No body wants the hydrogen cylinder to shatter like glass especiaaly when it is under pressure. (The worlds largest hand gernade?) Coating the innards with a protective film will eliminate the embrittlement, but what happens if you develop a holiday in the coating? BOOM! Hydrogen, being the smallest atom around can slip through the crystal lattice work of some metals. I have seen a demo of liquid hydrogen weeping through a glass beaker like it was a sieve. Of course we would not be using liquid hydrogen, although it could double as an air conditioner for the train as the temperature that liquid hydrogen exists at is very close to absolute zero. <br /> <br />All of this leads to one thing. The regenerative power available is another reason to electrify the rail lines. Also you certainly eliminate lots of pollution especially if the line has old Alcos that tended to ppuff a black cloud on acceleration.
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