Steam Question

NW Mailing List nw-mailing-list at
Sun Nov 28 13:27:16 EST 2021

Does the ambient outside temperature and or pressure affect the power produced by a steam locomotive?  I know the less the ambient pressure the lower the boiling temperature of water.  Did the engineers have to adjust their operating procedures in winter vs. summer?

Additionally, what additives did they add to boiler water to avoid scaling, and approximately when did railroads start doing this?

Christopher J. Bunsey

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <>

More information about the NW-Mailing-List mailing list