Improved Method of and Apparatus for Heating Green-houses and similar Buildings.
Year: 1889

page_text: Date of Application; 23rd Dec., 1889
Complete Specification Left, 11th Sept., 1890-Accepted, 11th Oct., 1890
PROVISIONAL SPECIFICATION.
Improved Method of and Apparatus for Heating Green-houses and
similar Buildings.
I, JOHN POAT of St. Sampson's Guernsey, do hereby declare the nature of this
invention to be as follows:-
My invention relates to an economical method of obtaining heat sufficient to effect
a hot water circulating system in green houses.
Whereas it is frequently the case that furnaces used for steam boilers or other
purposes already exist in close proximity to green houses, and from which the heat
from the furnace in order to create a strong draught is allowed to pass away from the
flues at a high temperature, I now under my invention propose to utilize this
waste heat to create a hot water circulating system to be applied to an adjacent green
house or similar building.
In the flues of the said furnace or immediately in connection with the furnace
itself, I employ water tubes forming the heating surfaces for an independent hot
water circulating system for the heating of an adjacent green-house.
I may carry fire-tubes of smaller diameter than the water tubes through the centre
of the latter so as to present both an internal and external heating surface to the
water tube.
Or I may introduce such special water heating tubes with a distinct connection to
a green-house hot water system, into, through, or amongst any boiler shell or tube
boiler which may itself be used for other distinct purposes.
FELL & WILDING,
1, Queen Victoria Street, E.C., Agents for the Applicant.
FELL & WILDING,
1, Queen Victoria Street, E.C., Agents for the Applicant.
COMPLETE SPECIFICATION.
Improved Method of and Apparatus for Heating Green-houses and
similar Buildings.
I, JOHN POAT, of St. Sampson's, Guernsey, Gentleman, 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:-
My invention relates to an economical method of obtaining heat sufficient to
produce a hot water circulating system in green-houses or other similar buildings.
Whereas it is frequently the case that furnaces used for steam boilers, or other
purposes already exist in close proximity to green-houses, and from which the heat
from the furnace in order to get a strong draught, is allowed to pass away from the
flues at a higher temperature.
I now, under my invention, propose to utilize this waste heat to create a hot water
circulating system, to be built to an adjacent green-house or similar building and the
advantages accruing are:-
1st. A considerable economy of fuel as compared with other systems.
2nd. The auxiliary tubes, as shown, act as a covering to the boiler in place of slabs
or stone, or iron, as usually employed.
This I carry out by introducing into the flues of the said furnace, or immediately in
connection with the furnace itself, water tubes forming the heating surface for an
independent hot water circulating system for the heating of an adjacent green-
house.
In order that my invention may be the better understood I will now describe by
way of illustration one method of carrying my invention into effect, in relation to the

page_text: drawings hereto annexed, reference being had to the letter and figures marked
thereon.
The boiler A is of the usual description utilized for heating large quantities of
water for the heating and ventilating of buildings, and is usually encased in brick-
work, the gases passing between the top rows of tubes B to the flue or chimney.
In order to utilize the waste heat that is given off I arrange annular water
tubes CC, preferably directly over the boiler, in such a manner that the gases pass
from the furnace through the tube C, enter the tube C, and travel in an alternate
direction backward to the flue. The effect of this is that the gases give up their
heat (much of which would otherwise be wasted) to the water contained in these
water tubes.
A system of flow and return pipes can be arranged at D D', by which communica-
tion may be made to the circulating pipes in the green-house, or building, required to
be heated by this auxiliary arrangement.
I may equivalently carry water tubes of smaller diameter than the outer water
tubes through the centre of the latter, so as to present both an external and an
internal heating surface to the hot gases; or I may introduce such special water
heating tubes with a distinct connection to a green-house hot water system, into,
from, or amongst any boiler shell or tube of the boiler, which may itself be used for
other distinct purposes.
I have found by this arrangement considerable useful heating effect can be obtained
without further expenditure of fuel, merely by the absorption of the heat of the
gases by the water contained in my auxiliary water tube, which would otherwise have
been wasted.
It is obvious that any multiplication of water tubes may be used for absorbing the
heat and waste gases without departing from the essence of my invention.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1st. In combination with the furnace or flues of any boiler, an independent system
of heating surfaces for absorbing the waste heat from the escaping gases of the said
furnace, and communicating it to the water of an independent heating system,
substantially as described.
2nd. The construction and arrangement of auxiliary heating surfaces in combina-
tion and conjunction with a furnace or flues of any steam power or heating boiler,
substantially as described and illustrated.
Dated this 11th day of Santamber 1800.
FELL & WILDING,
1, Queen Victoria Street, London, E.C., Agents for the Applicant.