The Evansville daily journal. [volume] (Evansville, Ia. [i.e. Ind.]) 1848-1862, 1858-07-14
Che Daily goarmal.
A New Ice Machine.

Some months ago the invention OF DIR.
Gorril, of florida, for making ice and low
ering the temperature of buildings, simply
by COMPRISING the air and expelling its
latent heat, and then allowing it to expand
and absorb the sensible heat of an apart
ment, was mentioned. The London papers
describe an invention which must attain
the same end much more rapidly and as
economically. The following is an account
OF the English mode of making artificial
ice:
The refrigeration is produced by the eyap-
Grafton OF ether IN q vacuan; and the pccu-
harity Of the invention consists IL the ar
rangementS for evaporating tie ether at
low temperature and coadensing II at
higher, precisely the reverse OF ordinary
evaporating processes. The ether is con-
tanned in air-tight vessels, relieved from the
pressure Of the atmosphere. The cylinder
in the centre of the apparatus Is hlled with
valves, so that each stroke OF the piston
withdraws quantity Of ether vapor from
the left hand vessels, and forces il into q
condensing vessel on the right hand. Where
the vapor is raised an intense cold is pro-
duced; where il is condensed a correspond
ing degree Of heat is evolved. The ether,
after resuming the liquid state, returns by n
self-regulating valve to the evaporating YES
sci. and the process thus continues uninter-
ruptedly, without requiring any attention,
and without the slightest waste of matirial.
Indeed, as the pressure inside the vessel is
less than the outside atmospheric pressure,
it is an .impossibility that any ether can
escape.
"The evaporating vessel is simply tubu-
lar boiler. This is not a misnomer, for the
ether actually boils in it at a temperature (if
required) fifty degrees below the freezing
point. The cold produced is utilized by
means OF stream of salt water which does
not itself freeze at the temperature required
for ice making, but carries the cold 20 the
vessels containing the fresh water intended
for conversion into ice. This part of the APP
paratus consists of n trough twenty feet in
length, fitted with sixty one freezing moulds,
over the outside surfaces of which the cold
water circulates in continued stream. At
ter having thus parted with lis cooling pow
or it is returned to the refrigerating vessel,
and again passed through the tubes of the
boiler. There is thus continued and reg
ular circulation of this fluid, similar TO that
of the ether, the whole bearing remote
resemblance 10 the double circulation of the
blood. 1t is found that the number Of freez-
ing moulds is not nearly sufficient, and that
the machine will be worked with more adj
vantage if the number be doubled"
The ice thus formed can be made of any
shape and thickness. The whole expense Of
process is that of the motive power. In the
process itself there is TO waste or expendi-
ture of anything but water. IL is said that
ten shillings ton will include all the ex-
pense with interest on capital, &c. It's pro
posed to cool rooms in summer by the pass
ing tubes of this iced water through them
as steam or hot water is passed through fac
tories in the winter.