Apparatus for Heating Steam.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Apparatus for Heating Steam.
I, LOUIS MAICHE, of 368, Rue St. Honore, Paris, Engineer, do hereby declare
the nature of this invention to be as follows:-
It is found that steam is rendered more effective in producing motive power
by heating it before it acts in the cylinder of a motor engine, and this increase
of effect is more marked if the steam is dilated before being heated.
This invention relates to apparatus for heating steam, which may be in dilated
condition by means of highly heated water in the following manner.
Above a
furnace, in which water is heated as it circulates through coils of pipes, is
situated an exchange heater consisting of a strong vessel preferably cylindrical,
through which the water passes in one direction, this vessel containing numerous tubes
through which the steam passes in the opposite direction. The hot water ascends
from the upper part of the furnace coil to the upper part of the exchange heater,
and the water after passing through the heater and giving up more or less of its
heat to the steam descende to the lower part of the furnace coil and after
receiving fresh heat ascends again. The steam passes through the tubes which
are preferably filled with tubes or ducts of good conducting metal closely clustered
together within the tubes, and thus the steam receives heat from the hot water
surrounding the tubes.
Instead of employing heated water circulating as above described, heated oil
may be used.
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ABEL & IMRAY,
Agents for the Applicant.
I, LOUIS MAICHE, of 368, Rue St. Honore, Paris, Engineer, do hereby declare
the nature of this invention and in what manner the same is to be performed
to be particularly described and ascertained in and by the following statement:-
It is found that steam is rendered more effective in producing motive power
by heating it before it acts in the cylinder of a motor engine, and this increase
of effect is more marked if the steam is dilated before being heated.
This invention relates to apparatus for heating steam, which may be in dilated
D

page_text: condition, by means of highly heated water, as I shall describe referring to the
accompanying drawings.
Figure 1 is an elevation of apparatus for this purpose. Figures 2 and 3 shew
to an enlarged scale a longitudinal and a transverse section of the exchange
heater employed.
Above a furnace coil F in which water is heated, as it circulates through
the coil, is situated an exchange heater consisting of a strong vessel A preferably
cylindrical, through which the water passes in one direction, this vessel A con-
tains numerous tubes D through which the steam passes in the opposite direction.
The hot water ascends from the upper part of the furnace coil, by a pipe B
to an expansion box E and by a branch C to the upper part of the vessel A at
one end of it and the water after passing through A and giving up more or less
of its heat to the steam in the pipes D descends by the pipe G from the opposite
end of A to the lower part of the furnace coil F and after receiving fresh heat
ascends again.
The steam from the boiler enters a chamber H at the one end of A and passes
through the tubes D) which are preferably filled with tubes or ducts of good
conducting metal closely clustered together within the tubes, and thus the steam
receives heat from the hot water surrounding the tubes, and passes from the
chamber L at the other end at A to the engine.
Instead of employing a separate furnace for heating the water, the coil for
that purpose may be arranged in the chimney or flue leading to it.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is:
In apparatus for heating the steam, the combination of a coil of water pipes,
means of heating them, and an exchange heater, substantially as and for the
purpose set forth.
Date : 1011 1
1000