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Steam locomotive feedwater heaters and thermal efficiency
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<P mce_keep="true">Dear Railway Man,</P> <P mce_keep="true">at UPRR's homepage, a table of current operated Wyoming coal mines (here: <A href="http://www.uprr.com/customers/energy/coal/coalspec.shtml" mce_href="http://www.uprr.com/customers/energy/coal/coalspec.shtml">http://www.uprr.com/customers/energy/coal/coalspec.shtml</A> ) show a value of 9700- 9800 btu/lb.</P> <P mce_keep="true">They are not necessarily the mines that supplied fuel for steam-engines (Hanna / Rock Springs is not listed anymore), but give a course of how low the grade of coal in this area is. Anybody wonder now, why some steam engines smoked so badly?</P> <P mce_keep="true">Cheers,</P> <P mce_keep="true">lars</P> <P mce_keep="true"> </P> <P mce_keep="true">Paul,</P> <P mce_keep="true">if you read somewhere BB used 40t coal, that was the overall consumption from Ogden to Wasatch/Evanston.</P> <P mce_keep="true">BB used 10 tons coal per hour, with 28t in the tender this was ample load for a 1 hour call, then covering the 40miles to Echo within one hour and 40 min and a reserve for occasionally stops on sidings for more priority trains or traffic. At Echo, they were reloaded within 20min, then they worked hard up the grade, including 15miles or so on continious 1,14% to Wasatch, covering 30 miles in 2 hours. Engine 4016 exerted a cont. TE of up to 115.000lbs at 14mp/h with almost 4000tons freight. The av. produced DBHP Ogden - Wasatch was ~3700, maybe 4100-4200 cyl. HP.</P> <P mce_keep="true">That was BB's run.</P> <P mce_keep="true">Cheers</P> <P mce_keep="true">lars</P>
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