Improvements in and relating to the Utilization of Exhaust Steam from Steam Engines for the Heating of Feed Water and the Generation of Steam.
Year: 1897

page_text: Date of Application, 23rd Dec., 1897
Complete Specification Left, 12th Sept., 1898-Accepted, 3rd Dec., 1898
Improvements in and relating to the Utilization of Exhaust Steam
from Steam Engines for the Heating of Feed Water and the
Generation of Steam.
I, ADOLF WÄLDE, of 7, Vogelsangstrasse, Esslingen, Württemberg, in the
Empire of Germany, Engineer, do hereby declare the nature of this invention
to be as follows;-
:-
My invention relates to the utilization of exhaust steam from steam engines and
to apparatus therefor.
This invention has for its object to provide for obtaining very hot water for feed-
ing steam generators. It is based upon the principle of condensing exhaust steam
at a low pressure in water which is submitted to great pressure. The greater this
pressure on the water the higher is the boiling point, and the hotter will also be
the water after the condensation of the steam. This condensation may be effected
in apparatus wherein the water is subjected to pressure by great velocity. For
instance the water is subjected to great pressure by centrifugal force in a centrifugal
pump and presents at the same time a free surface with which low-pressure steam
comes in contact and is thus condensed. Or water is forced through a thin pipe
at a great velocity and at a great pressure, the pipe receiving nozzles through which
the exhaust steam enters and is condensed in the water.
An advantageous application of the aforesaid apparatus consists in taking water
from the steam generator and using the same in such apparatus for pressing pur-
poses. Or a certain quantity of hot water is taken from the steam generator and
introduced into a steam engine. In this engine steam is generated from such
water and expands doing work until the water and steam reach a low pressure.
The remainder of the water is subjected to great pressure in the aforesaid centri-
fugal pump forming a condensing apparatus, whereupon the steam generated in the
engine is admitted and thereby condensed. After the condensation there is again
the original quantity of hot water which is fed back into the generator. In this
manner all the heat of the exhaust steam is re-introduced into the generator. "
Dated this 92nd day of December 1897
CHARLES JUNGE,
Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in and relating to the Utilization of Exhaust Steam
from Steam Engines for the Heating of Feed Water and the
Generation of Steam.
ADOLF WÄLDE, of 7, Vogelsangstrasse, Esslingen, Württemberg, in the
Empire of Germany, Engineer, do hereby declare the nature of this invention

page_text: and in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement:-
My invention relates to the utilization of exhaust steam from steam engines for
the heating of feedwater and the generation of steam.
This invention has for its object to provide for obtaining very hot water for feed-
ing steam generators. It is based upon the principle of condensing exhaust steam
at a low pressure in water which is submitted to great pressure. The greater this
pressure on the water the higher is the boiling point, and the hotter will also be
the water after the condensation of the steam. This condensation may be effected
in a centrifugal pump, in which the water is subjected to great pressure by centri-
fugal force.
Nozzles B are let in the motion of the fast flowing water through which the
exhaust steam enters and is condensed in the water.
An advantageous application of the aforesaid apparatus consists in taking water
from the steam generator C and using the same in such apparatus for pressing
purposes. A certain quantity of hot water is taken from the steam generator C
and introduced through pipe D into the centrifugal pump A. In this apparatus
the water is subjected by centrifugal force to a greater pressure P than the pres-
sure attained in the steam generator whereupon the exhaust steam of the steam
engine is admitted through pipe E and nozzles B and thereby condensed.
The water through the condensed steam is brought to the high boiling
temperature T which suits the pressure l' and is then brought back through pipe F
to the steam generator C in which is the smaller boiling temperature t.
The over
temperature Tt then serves in the generator for turning the water into steam.
The apparatus shown in the drawing works in the following manner:
During the time in which it is necessary to feed the boiler C, cock G is shut and
and cock H is open. The cold feed water enters through pipe and cock H and
is heated in the apparatus A and is then introduced through pipe in the
boiler ('.
In the following period, during which it is not necessary to feed the boiler C,
cock G is open and cock H shut. Through pipe D and cock G the water enters
from the boiler with the temperature into the apparatus A in which it is heated
to the higher temperature T and returns through pipe F to the boiler ('.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is
The connection of a centrifugal apparatus, in which the exhaust steam of a
steam engine is condensed in water which through centrifugal power has been
brought to a high pressure for obtaining very hot water for feeding steami
generators.
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