LETTERS

By Staff
Published on May 1, 1961

The report chart shows the 24 Port Huron evaporating 8 lbs.
water per lb. of coal. This is normally considered a fair
evaporation factor in power plant work with even some water tub
boilers fired by mechanical stokers, with a 12500 b.t.u. coal
(2′ screenings). The fact that the Port Huron had a crosshead
pump and a feed water heater (heated by exhaust steam) accounts for

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