Improved Method of and Means for Refrigerating and Drying Air.
Year: 1889

page_text: Date of Application. 25th Sept., 1889
Complete Speciñcation Left, 24th June, 1890-Accepted. 26th July, 1890
TUNAL DIECIFICATION,
[Communicated from abroad by CARL LINDE, Mechanical Engineer, Hilda Strasse,
Wiesbaden, Germany.]
Improved Method of and Means for Refrigerating and Drying Air.
I, ROBERT CHARLES ALBERT BANFIELD, Mechanical Engineer, of St. Clère, Walwood
Road, Leytonstone, Essex, do hereby declare the nature of this invention to be as
follows:-
In most of the arrangements heretofore employed for refrigerating air for the supply
of refrigerating chambers or apartments either on land or at sea, the disadvantage
occurs that the air entering such chambers is usually.saturated with moisture and is
of a much lower temperature than that desired to be maintained in the chamber or
apartment.
The present invention relates to a method of obviating these disadvantages, whereby
the air supply, before passing to a refrigerator of any known construction, is caused to
pass in contact with the one side of a conducting surface, in contact with the other
side of which passes the portion of the air which has already been cooled by contact.
with the 'refrigerator on its way to the chamber or apartment to be cooled or
refrigerated.
By this means the incoming air, whether that be air from without, or air from the
cooled chamber, is firstly cooled down to certain. extent by transmitting a portion of
its heat through the conducting surface to the refrigerated body of air; secondly, it is
deprived of a portion of its moisture in passing over or through the refrigerator, and
thirdly, in then having its temperature raised somewhat by taking up heat from the
incoming air, it is no longer in a state saturated with moisture, and is at about the
temperature required for the refrigerating chamber. The degree of cooling of the air
by the refrigerator and the consequent deposit of moisture may be so adjusted that.
the air after being again somewhat warmed in entering the cooled chamber or apartment.
shall have the hygrometric condition.desired.
The means or apparatus for carrying out this method of operating can be variously
arranged, thus for example a conduit leading to the chamber to be refrigerated may
have, at a certain point of its length, a lateral branch passage divided longitudinally
by a partition formed of good heat conducting material, in such manner that the
incoming air.is made to pass from the said conduit along the branch in contact with
one side of the partition, at the end of which is situated a refrigerator of any known
construction, in contact with which the air passes so as to become refrigerated and to
give up a portion of its moisture, after which it returns along the branch conduit ou
the other side of the partition, thereby taking up heat from the incoming air as
described, before passing back into the main conduit on 'kay to the refrigerating
chamber.
COMPLETE SPECIFICATION.
Improved Method of and Means for Refrigerating and Drying Air.
ROBERT CHARLES ALBERT BANFIELD, Mechanical Engineer, of St. Clère, Walwood
Road, Leytonstone, Essex, 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 most of the arrangements heretofore employed for refrigerating air for the supply
רנס.D

page_text: of refrigerating chambers or apartments either on land or at sea, the disadvantage occurs
that the air entering such chambers is usually saturated with moisture and is of a much
lower temperature than that desired to be maintained. in the chamber or apartment.
The present invention relates to a method of obviating these disadvantages, whereby
the air supply, before passing to a refrigerator of any known construction, is caused to
pass in contact with the one side of a conducting surface, in contact with the other
side of which passes the portion of the air which has already been cooled by contact.
with the refrigerator on its way to the chainber or apartment to be cooled or
refrigerated.
By this means the incoming air, whether that he air from without, or air from the
cooled chamber, is firstly cooled down to a certain extent by transmitting a portion of
its heat through the conducting surface to the refrigerated' body of air; secondly, it
is deprived of a portion of its moisture in passing over or through the refrigerator,
and thirdly, in then having its temperature raised somewhat by taking up heat from
the incoming air, it is no longer in a state saturated with moisture and is at about the
temperature required for the refrigerating chamber. The degree of cooling of the
air by the refrigerator and the consequent deposit of moisture may be so adjusted that.
the air after being again somewhat warmed in entering the cooled chamber or apartment
shall have the hygrometric condition desired.
The accompanying drawing represents diagrammatically an arrangement of air
channels adapted for operating in the manner above set forth. The air passing along
the conduit, S to supply a refrigerating chamber is diverted along a channel O
to the refrigerating, apparatus R, whence it passes by the channel to the
conduit S The channels C and Care separated by a partition :P of material that
is a good conductor of heat, such as metal, and in order to increase the exposed surface
it may be corrugated. The air passing along C transmits through the partition Pra
portion of its heat to the air passing along C which has been cooled by passing the
refrigerator R, and has there deposited much of its moisture. The air thus cooled
and deprived of moisture, as it, passes along C receives heat transmitted through the
partition P and thus has its capacity for moisture, or practically, its dryness, increased
before passing by the conduit S² to the refrigerating chamber.
Having now particularly described and ascertained the nature of my said Iuven-
tion and in what manner the same is to he performed, I declare that what
claim is
1. The herein described method of refrigerating and drying the air supply of a
refrigerating chamber, by abstracting from the air passing to a refrigerator a portion
of its heat, and imparting this, by conduction, to the air passing from the refrigerator
and having deposited its moisture.
2. In combination with a refrigerator, two channels separated by a conducting
partition leading the air respectively to and from the refrigerator, substantially as and
for the purposes set forth.
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