Posted by Ken Macfarlane on October 11, 2012 at 17:52:41 from (184.151.127.182):
In Reply to: Steam power posted by gtractorfan on October 11, 2012 at 13:24:49:
Big problem on a train is size and weigh, notice they use an open steam cycle that uses up the water, no room for a condensor. That means boilers get crudded up with minerals, and the turbine gets crudded up. Turbines have tight clearances and lots of corrosion problems if the water isn't just right.
Also the starting torque with a turbine is terrible requiring very expensive gear reduction boxes. Ships its not a problem with water acting like a torque convertor and vari pitch props.
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