The morning news. [volume] (Savannah, Ga.) 1887-1900, 1899-07-06

compressed and partially cooled form Is
received in a stand pipe, whence il passes
through a series of coils to collector
From the collector it is expanded inlo a
chamber through a valve and a portion
passes through sman ports into a second
chamber and through a second series of
coils TO a discharge pipe tDon opening
valve connected with this discharge pipe
a certain portion of the highly compressed
and intensely cold air expands mo the re-
ceiVer or under-cooler, when dQuehcadon
takes place, and the l.queucd air passes
to the bottom of the receiver, 20 be drawn
off by cock. That portion of the air
which does not llquefy after passing the
valve passes through sma1 porTs into a
chamber and hence into the collector to
go again through the system The return
passage of the air produces an intense
GOODNESS in the outgoing channels through
which it passes, and as these completely
surround the incoming spiral and act
through contact directly on The metal wall
of the same it has an exceedingly effective
action on the incoming current of COM
pressed air in lowering its temperature
The process is so thorough that the
lquetied hir has been reduced in the lique-
fer to a temperature of 400 degrees, when
il approaches solid state and becomes
snow.
Its Possible Uses.
As to the uses Of IiquoGod air, Nj Os-
tergren says that it has two inviting fields
as a refrigerant and as a motor LAS
a refrigerant," he says, 1T has manifold
advantages. It's production is cheap and
it is dry, absolutely pure, free from OBJ
noXiOus SMELL and viii be more desirable
than any other refrigerant used. J. can
be used in many places where the present
known refrigerants cannot be used en-
GENTLY and satisfactorily, such as for
cooling rooms, for use ia hospitals, and
so on, and there is no reason that can
discover why it should not suppant ice,
not only as a refrigerant in places where
ice cannot be successfully used but also
in the domestic household and in freight
and passenger cars"
Mr. Ostergren is now devising a system
for cooling dwelling houses and hospitals
by distributing liquefed air by means OF
fan. This device win be thoroughly
tested this summer.
As to its use as a cheap and convenient
motor power, he says.
1T has a large expansive force and can
be utilized with machinery of light con-
struction, and will have the great ad-
vantage of not being destructive to the
machinery to which it is applied and with
which it is used, as other motor powers
are. l am building a motor now. which
will be completed shortly, and will test
its efficiency in this respect"
May BE Used as an Explosive.
Mr. Ostergren points out that. there are
many other uses TO which iiquefed air
may be put.
1T has already been demonstrated" he
says, that liquid air mixed with carbon
or any volatile substance becomes a pow
erful explosive. Quite extensive expert
Tents have been made abroad with il ia
this line, and at this time where the Sim
plon tunnel is being built through the
mountains in Switzerland, they are build
ing a Linde machine at each end of the
tunnel, for the purpose of furnishing liquid
air necessary 10 provide the explosive for
constructing the tunnel In recent for
mula given for the use of liquid air as an
explosive the result of some experiments
in Austria, it is discovered that twelve
gallons of liquid air used as an explosive
is equivalent to ton of dynamite"
Dynamite now costs in this city 500 q
ton. Twelve gallons of lquehed air viii
cost about 81.
a short while ago. when Nordenfeld, the
Swedish gun maker, was in this city he
plosive for shells in large guns. Mr. Os-
tergren has devised a shell in which lique-
fed air is mixed with charcoal and used
as an explosive. a cap at the end of the
she'll explodes, when the shell strikes it's
objective, and fires the charge. This Shell
will be tested soon. Both Germany and
Austria are experimenting in the same
field and each claims to have succeeded
In utilizing the new force as a powerful
and satisfactory explosive