Improvements in Utilising Exhaust Steam on Shipboard, and Apparatus for that Purpose.
Year: 1898

page_text: Date of Application, 20th June, 1898
Completo Carnification Loft DOLL M
1000
DOLL A
1000
Improvements in Utilising Exhaust Steam on Shipboard, and
Apparatus for that Purpose.
We, EDWARD BONAR CAIRD and THOMAS JAMES RAYNER, both of 777, Commercial
Road, in the County of London, Engineers and Coppersmiths, do hereby declare
the nature of this invention to be as follows:-
In many steam vessels, besides the main engines, there are other subsidiary
engines for various purposes such as feeding boilers, circulating condensing water,
generating electricity, compressing air or forcing water.
These engines are generally of non condensing kind, and discharge the exhaust
steam at considerable pressure. This exhaust steam is either allowed to blow off
or is led into the main condenser to be condensed, thus in many cases interfering
with the vacuum therein.
Our invention has for its object to utilise this exhaust steam for the production
of fresh water, for which steam is usually taken direct from the main boilers or
from a subsidiary boiler, involving considerable expenditure of fuel.
For this purpose, we e provide a receptacle into which the exhaust steam from all
the subsidiary engines is led and from which steam is led to condensing apparatus
of any suitable known kind for producing fresh water. The receptacle is provided
with a safety valve loaded to a predetermined pressure and the escape by this
valve is led to the main condenser. The fresh water condensing apparatus may
be of multiple effect, the water resulting from the condensation of the exhaust
steam being used as feed water for the boilers, while that resulting from the
condensation of the vapour generated by condensation of the exhaust steam
may be, used for drinking and culinary purposes.
Dated this 20th day of June 1898.
ABEL & IMRAY,
Agents for the Applicants.
Improvements in Utilising Exhaust Steam on Shipboard, and
Apparatus for that purpose.
We, EDWARD BONAR CAIRD and THOMAS JAMES RAYNER, both of 777, Commercial
Road, in the County of London, Engineers and Coppersmiths, 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:-
In many steam vessels, besides the main engines, there are other subsidiary
DO077

page_text: engines for various purposes such as feeding boilers, circulating condensing water,
generating electricity, compressing air or forcing water.
These engines are generally of non condensing kind, and discharge the exhaust
steam at considerable pressure. This exhaust steam is either allowed to blow off
or is led into the main condenser to be condensed, thus in many cases interfering
with the vacuum therein.
Our invention has for its object to utilise this exhaust steam for the production
of fresh water, for which steam is usually taken direct from the main boilers or
from a subsidiary boiler, involving considerable expenditure of fuel.
For this purpose, we provide a receptacle into which the exhaust steam from all
the subsidiary engines is led and from which steam is led to condensing apparatus
cf any suitable known kind for producing fresh water. The receptacle is provided
with a safety valve loaded to a predetermined pressure and the escape by this
valve is led to the main condenser. The fresh water condensing apparatus may
be of multiple effect, the water resulting from the condensation of the exhaust
steam being used as feed water for the boilers, while that resulting from the
condensation of the vapour generated by condensation of the exhaust steam
may be used for drinking and culinary purposes.
The accompanying drawing is a vertical section of a receptacle for the exhaust
steam of the subsidiary engines, arranged according to our invention.
It consists of a cylindrical vessel a preferably lagged with non-conducting
material b. On its top is a valve box having a branch c by which the exhaust
steam from the subsidiary engines enters, and a branch d by which such of it
as passes the valve e goes to the main condenser. The valve e is loaded by an
adjustable spring so that it does not open to allow passage from c to d unless the
pressure in the receptacle exceeds a certain amount such as 20 to 25 lbs per
square inch. From the receptacle a steam passes by the branch f to the coils or
other extended surfaces of any known distilling apparatus where it generates
vapour and becomes condensed, the water condensed from the vapour being used
for drinking or culinary purposes while that resulting from the condensation of
the steam from the receptacle a passes to the boilers as feed. By another branch g
furnished with any suitable known steam taps, such water as results from con-
densation in the receptacle a passes also as feed to the boilers.
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed, we declare that what we claim
is:―
1. The herein described method of utilising the exhaust steam from the sub-
sidiary engines of a vessel by collecting it in a receptacle under adjusted pressure
and employing it for distillation, and boiler feed.
2. Apparatus for utilising exhaust steam as above set forth, constructed and
operating, substantially as described.
D this 20th day of March 1899.
ABEL & IMRAY,
Agents for the Applicants.