Were steam train carriages heated?

Initially diesel-hauled passenger trains like the Northerner on the North Island Main Trunk had a separate steam heating van, but later the carriages of long-distance trains like the Overlander used electric heaters supplied by a separate power or combined power-luggage van.



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Steam-powered locomotives were invented in the early 1800s. At first they pulled freight cars full of coal, and later passenger cars full of people. A steam locomotive generally burned coal in a furnace, or “firebox,” and the fire heated water in a boiler to make steam.

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In most cases, each passenger locomotive was fitted with a steam generator and a feedwater supply tank. The steam generator used some of the locomotive's diesel fuel supply for combustion.

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The diesel engine drives an alternator, which produces electricity to run electric motors mounted on the locomotive's axles. The internal combustion engine was a dramatic improvement in efficiency over the steam locomotive, making substantial savings possible in maintenance and the elimination of widespread facilities.

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All the metal parts of the engine are still far too hot to touch. Inside the boiler are tubes called “flues” which carry the hot gases from the fire through the boiler to heat the water to steam.

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Under the guidelines laid out in the sheet, a rail temperature of 131 degrees requires a maximum speed of no more than 100 mph; a rail temperature of 140 degrees calls for a top speed of no more than 80 mph.

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Diesel engines are much more efficient than steam engines, but the combustion in the steam engine's firebox can be more carefully controlled and, so, possibly produce less of the types of pollution caused by imperfect combustion.

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ton for ton a steam locomotive can and does pull more tons at higher speeds than a diesel locomotive can. The H.P. of a diesel is less effective at faster speeds because more electricity is needed to keep the traction motors spinning at the higher speeds.

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1960 is normally considered the final year of regular Class 1 main line standard gauge steam operation in the United States, with operations on the Grand Trunk Western, Illinois Central, Norfolk and Western, and Duluth Missabe and Iron Range Railroads, as well as Canadian Pacific operations in Maine.

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