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Blowney, Walter E. (ed.) / The Wisconsin engineer
Vol. 22, No. 6 (March 1918)

White, John C.
Central station heating,   pp. [unnumbered]-243



       the lWfsconSin Engineer
VOL. XXII                MARCH, 1918                 NO. 6
             CENTRAL STATION HEATING.
A DISCUSSION OF ITS ECONOMIC FEATURES WITH REFERENCE TO COM-
                      MUNITY SERVICE.
                      JOHN C. WHITE
           State Powcer Plant Engineer, WVisconsin
     Comtplete Utilization of Fuel Necessary to Conm unity.
  The conservation of our national resources has lately been the
sul)ject of much discussion and some laws have been enacted with
a view primarily to preventing monopoly and control by private
interests, but having little further to commend them as economic
measures. Much has been accomplished in the development of
high efficiency prime movers, manufacturing methods and ma-
chinery, transportation, hydro-electric power plants, and trans-
mission lines. This development, however, has been instigated
by a commercialism that has been fatal to the highest utilization
of one of our irost valuable and necessary resources,--coal.
  Engineering attention, technical and commercial, has been oc-
cupied with the securing of a mechanical horse power or kilowatt
hour at the switchboard for the least possible evaporative cost,
regardless of the waste of the heat not accounted for at that point.
The limit of attainment in that direction seems now to have been
reached, and yet, with the highest type and largest capacity unit,
but little more than 15 per cent. of the heat of the fuel can be con-
verted into a salable product as power in the form of electric
energy. Many installations do not deliver as a commercial prod-
uct more than 6 per cent. of the energy of the fuel. A method
that promises at once to increase greatly the commuitity v-alue of
such stations in the use of coal is worthy of consideration. This
can be accomplished by combining, with our steam power plants,
a central station heating system.


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