The Minneapolis journal. [volume] (Minneapolis, Minn.) 1888-1939, 1902-12-03
MUCH AIR; LITTLE COAL
Burned by the Dolye Air Burner
Demonstrations With It Be
ing Made Here

At Ala Second avenue S the Doyle Air
Burner company Is giving practical
demonstration Of device which would
make coal baron's heart drop into his
boots at the prospect Of reduced fuel
consumption. In a furnace big enough to
heat a twelve-room house there is a roar
ing fire of Hooking Valley coal mixed with
low grade Illinois slack the smokiest
oombinat ton known to the brotherhood
or tiremen. Yet, all the smoke that re-
SUITS from this unpromising combination
OF fuel would not injure the most deli
cate fabric" as the soap man says. #
Ihe problem Of burning smoke Is the
problem OF burning air, and the man who
can burn air draws for at least part Of
MS fuel upon supply which nobody can
corner. 1T has long been known to fire
men that from 40 to so per cent Of the
efficiency Of the fuel goes up the CHM
ney In the shape of SCOT and gases. SCOT
is pure carbon, richer than coal as fuel,
and the gases set free in imperfect COM
bustion are equally valuable as heat pro-
ducers. All these need In order to be
turned into heat is more oxygen, or, in
other words, more air. But the ordinary
heating device provides for feeding air
only through the crate from below, and
this cannot supply enough air for per-
feet combustion -.s '.
vides for three burnings. In the big fur
mace, which is typical Of all the Doyle
devices, air f1ues run from the bottom
up along side the firepot and discharge
their super-heated currents into combus-
ton chambers above the frepot Thus,
as the smoke and SCOT rise from the fire
pot they are met in the second combus-
ton chamber by a hot blast and burst
into bright flame. The same process Is
repeated yet once more SO that when the
chimney is finally reached. the fuel has
been forced to give up all its heat and the
# ~ f,,x~ jrS s,,-% 41,-k 1l,
ahead. His saving In case hard coal is
used will be fully as valuable, for while
hard coal makes little SCOT under
faulty combustion. it liberates gases
which are rich in heat If they can be
caught and consumed.
The simplicity of the Doyle heating de-
vices which accomplish such surprising
results is a strong card in their favor, for,
after the fire ia once started the fuel saw
ing goes on without further adjustment.
In addition to the big furnace the company
is demonstrating parlor heater and gas
stove, bot hof which use all the heat units
there are to be found in the fuel supplied
There have been many promising de-
vices Of like sort before but they have
been chiefly famous for their promises
The results Of the tests to which the de-
vice described above have been put. how
ever, leave no room to doubt its COM
plete success. tIhas been tried in all
sorts Of ways and es a result Edwards
Wood & Co., well-known grain men of
this city, and Of the northwest have tax
en- hold Of the business Of manufacturing
and pushing the burners. That a firm of
such standing and such demands upon it's
energies in other directions should inter-
est itself in the device speaks in the
strongest terms not only of their faith in
its future, but of the merits Of the burner
itself under all conditions.