Arizona republican., 1915-05-23

furnished by the Pacific Tank & Pipe
Co. Special lap-weIded reducers
made by the riveted pipe manufac-
turers connect the pipe lines of diff
ferent sizes. For boiler feed there
are two Allis- Chalmers steam tur
hine- driven centrifugal pumps, oper-
ating at 1900 rpm, with Sin. dis
charge, 200 gals. per minute, delivery,
working against 41S-ft. pressure head.
on its way to the boilers the water
passes through a Cochrane metering
heater with Lea recorder. furnished
by the Harrison Safety Boiler Co.
Fuel oil for the smelling furnaces.
and for the boiler furnaces when re-
quired, is unloaded from tank cars
into 4 10,000-bbl. storage tank, and
flows thence to eight 111-bl. steel
measuring tanks, of the Chicago
Bridge q Iron cos fabrication. This
oil is forced under pressure through
the spray, system of the boiler fur
naces by six Fairbanks Morse 5Ax
3 y in. pumps, in accordance with
the Wilgus patent process.
+ The condensine system of the
steam units. and water jacket cool
ing system of the furnaces as well
as of the compressors. are taken
care of by the same central cooling
plant and pumping station, where the
boiler feed and oil pumps are also
located.
An area 15Ox266 # is covered by
the cooling pond which is built of
asphalt-lined concrete. 1t holds L.
100000 gals. A concrete wall divides
the cooling pond into two sections.
one for the furnace jacket water
equipped with 40 Schuette & koert- 4
ing spray MOBILES, and another for
the condenser hot-well water which
has 220 such MOBILES. All nOzzles are
arranged in groups of five.
The water from the power plant is
pumped II the cooling pond and
forced through the nozzles by the
circulating pumps of the condenser
system; but for the furnace jacket
water special provision had to be
made. There are two Allis-C Chalmers
units consisting of 16-in. centrifugal
pumps, each driven by a 10O-hp., 22O-
volt induction motor, which can he
operated sinely or in series against
30-ft head for the spray MOBILES or
e0-ft- head to a-200. 000-gal elevated
stel tank. built by the Chicago
Bridge & IRON Co, from which the |
water flows through tht furnace
jackets by gravity. The piping COM |
prises 10 to 20-in. galvanized Ameri- |
can Spiral riveted pipe with forged |
steel flanges
All of the low pressure water sys- !
tenn is also connected up with the |
high pressure mains, described far |
ther on. from which a supply can be |
taken, when necessary, through re-
ducing valves. Either system will |
feed into the 100000 gal elevated |
tank mentioned.
The power house proper, containing |
the steam, air and electrical units. is |
Quilt of structural steel and brick !
with steel "Fenestra" sashes and an !
eXpanse of window glass aggregating |
nearly three fifths of the entire wall !,
space. A ground area Of 331x60 #. is |
covered, and an ample concrete base j
ment provides free access to piping |
auXiliaries. etc.
In this connection it is of interest |
to note that all of the steam exhaust |
ines of the works consist of lap |
welded pipe, with forged steel flanges !
attached. furnished by the American |
Spiral Pipe Works For the sizes |
from IL to % ms. the thickness of |
this pipe. is 3-16 in, from "a to 2S |
ms; it is Il lin, from SO to 40 inc
1t is 5-16 in. and from AZ to As ms.
it is Ss in
For the steam units in the power |
house there are three condensers, two !
Weiss (SouthwarlD and one Allis- |
Chalmers. Pumps for circulating the |
cooling water. and forcing the hot !
water to the spray MOBILES in the !
pond, consist of five motor-driven |
Allis Chalmers centrifugal units, two
Ia ms. and three 16 ms. Two South |
Nark and one Union dry air pumps |
the equipment. The main
system piping consists of |