Steam Boilers, Engines, Nozzles and Turbines
The Locomotive boiler has

147 fire tubes and 34 superheated tubes
157 fire tubes and 24 superheated tubes
137 fire tubes and 44 superheated tubes
167 fire tubes and 14 superheated tubes

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Steam Boilers, Engines, Nozzles and Turbines
Equivalent evaporation of water is the evaporation for a feed water supply at 100°C

And its corresponding conversion into dry saturated steam at 100°C and 1.033 kg/cm²
Conversion into steam at atmospheric condition
Conversion into steam at the same pressure at which feed water is supplied
And its corresponding conversion into dry steam at desired boiler pressure

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