The Hawaiian star. [volume] (Honolulu [Oahu]) 1893-1912, 1902-07-30
SAY OIL FUEL IS 0. K.
Continued from page one.)

ing into gas. Every day the carpenter
sounds this water and he is able to de-
teCt wheTetheT any oil has leaked out,
for it would rise to the surface Should
the oil be found in such quantity as to
render any danger from it's generating
gases, the level of the water would
simply be raised and the surplus oil run
lover the side of the vessel.
From these bunkers, the oil is forced
into two service tanks. Through these
tanks is run a steam coil. The idea of
running the steam through the Oil is to
raise the temperature of the Oil for 1t
has been demonstrated that combustion
is more easily accomplished If the
oil be heated somewhat. The oil is not
given much over a temperature of 100
! degree however. From these service
tanks, the oil is forced at a pressure of
! about Is to 20 pounds into the furnace.
In a. space about 3 feet inches by
/ 8 feet lin length, is located the burner,
where the combustion is first produced.
This burner is a tube about so inches in
diameter. Running through the center,
a small tube about a quarter of an inch
in diameter runs, and through this tube
the oil is forced, while surrounding this
inner tube are about 16 small tubes of
about an eighth of an inch in diameter
Through these outer tubes is forced
pure air by several Green blowers at a
Oil. and the air are forced out of the
burner at the same time, the cOmbus-
ton is inauguTated. The air causes the
oil to separate and as the oxygen also
causes the generation of gas, the com
bustion is effected.
Back of this compartment is a bridge
lwall and back of the wall is the COM
Ibustion chamber, the flames pass
Through this combustion chamber and
return through tubes to the front con-
Injection.
This connection is in the front of the
boiler and is a chamber about four by
five feet which enables the flames to
Iexpand from where they finally escape
Through a final set of tubes through the
smoke stack. The water is placed all
around the combustion chamber and
the return pipes and the burner room,
4 so that the steam is generated on near
lily all sides of the boiler. In order to
determine whether too much heat is
being wasted, there is a thermometer
lin the smoke stack which registers the
heat escaping. If this thermometer
shows that over 400 degrees is escaping
then the engineers know that they have
mot been as economical as they should.
The advantages of oil as fuel are two
fold 1t is considerably cheaper than
the coal and, moreover there is not so
much work aboard the boat. AS the
extent as when coal is burned. The
oil bunkers on the Nevadan contain A.,
400 barrels of oil, which will be more
| than enough to enable the vessel to
make the round trip from San Francis
! co to the islands In the same amount
of space could be placed about 900 tons
of coal which would be about what the
boat would use on the same trip. In
order to load the coal aboard the yes
sci and trim ship afterwards, the SER
vices of a large force of men would be
required and over a day be occupied
for loading. With the oil, the fuel can
be pumped into the bunkers in six
hours time and there is no trimming to
do. The new fuel can be operated with
Iabout half the force that would be re-
quired in the stoke room were coal
is used as fuel. 1t costs exactly $3.50 a
ton 10 put this oil aboard the vessel in
San Francisco, while coal would be
about $3.50 a ton. Judging from the
estimates of the engineers of the vessel
better results appear to have been oh
tanned from the new fuel About IL
pounds of oil is required to generate one
horse power, which is some what less
than could be done with coal.
Another element which will figure
largely in the adoption of oil as fuel
on passenger vessels Is that of danger.
The source of danger is not from the