The Worthington advance., 1902-06-06

p1OoOAO PAAAH0 "AASAA - S~AcV SAssssssk1s
will use from 90 to 2O0I
lbs. of steam per horse power hour.
Such an engine would not only take
care of your present needs, but
would be satisfactory for you for q
number of years hence. This same
pumping engine would be used in
case additional pressure was wanted
for fire service, or it could be supple
mented by using one of the present
Smith Vaile pumps which should be
kept in reserve for emergencies.
While the later pumps could be
made much more efficient than they
are now, by compounding them, !
think the more economical plan
would be for you to put in this
pumping engine as have suggested,
although it's first expense would be
considerably greater.
BY operating the pumping engine
at such times when the lighting load
is not heavy, the work of the boiler
will be made more nearly constant
and you will get your steam more
economically under such conditions.
Of course if at other times water is
necessary, the pumping engine
should be used in order to supply
the demand, but ordinarily the tank
could be filled at night or in the early
evening when the demand for electric
light is less than at other times.
The requirements of the R. R. Co.
which calls for the operation Of a
separate pump, could be met in
several ways, but probably the most
economical would be the installation
of a small triplex power pump
connected to one of the enignes
either by betting or gearing as we
should decide later after measuring
up the available space in each case.
This pump can he operated very
economically in connection with the
lighting load as it would assist the
engines in maintaining more con-
stant load. When the lighting load
became heavy, the pump could be
disconnected. By the use of an
electrical "tell-tale" the height of
water in the tank could be ascertain
ed when full so that no trouble
would be experienced by pumping
at night. i
The pressure pump which supplies
the R. R. Co.'S. tank would be kept
in reserve SO that pumping could be
participated in during the day time
if it was found necessary. 4
An open heater of suitable size
should,I think, be installed, for two
reasons;one being to increase the
temperature of the feed water and
the other to protect the boilers from
scale. If the impurities which naW
exist in the water could be deposited
in pans or other receptacles in an
open heater, there would be just 80
much less incrustation to get Into
the boilers which would result in a
more economical operation and save
wear and tear on the boilers. =.
In order to obtain a sufficient
amount of draft,it will be necessary
either to increase the height of
chimney or else install fan with
short stack and thus operate the
boiler with mechanical draft. ;, |
The nature of soil and size of
foundation under your present
chimney makes it very doubtful
whether you can erect a brick
chimney of sufficient size on the
present foundation. In fact, after |
careful calculation, think it unde-
sirable to take the risk. Sufficient |
draft might be obtained by taking
down the present chimney to a
point just above the breeching and
erecting steel stack above this
point, the same to be suitably guyed
by steel cables but considering the
interruption in operation Of plant
due to any such changes, would
recommed the installation Of fan
with induced draft. Such a fan
could be connected to the boiler by |
means of bypass, and under ordin-
ary loads, the present chimney could
be utilized. For any greater demand
on the boiler, the fan could be put
in operation and the boiler capacity
increased to any desired amount
within the capacity of the plant.
The horse power required to operate
such a fan is not at all excessive