US970807A

US970807A - Apparatus for economizing power in precooling plants.

Info

Publication number: US970807A
Application number: US53851010A
Authority: US
Inventors: Arthur Faget
Original assignee: Individual
Current assignee: Individual
Priority date: 1910-01-17
Filing date: 1910-01-17
Publication date: 1910-09-20
Anticipated expiration: 1927-09-20

Description

A. PAGET.

APPARATUS POP PooNoMIzING PowPR 1N PnBoooLING PLANTS.

APPLICATION FILED JAN. 17, 1910.

970,807, Patenad sept 2o, 1910.

, To all whom 'it' concern:` l

ARTHUR rAGE'r, or sAN PATENT. OFFICE.

rnAivcIsco, CALIFORNIA.

ArrAnA'rUs roancoNomIzrNG Powrzn 1N rnEcooLxNG PLANTS.

Specitcation ot Lettersl'atenti.' Patetedlspt. 20 1910.`

l ,Appuaaao'n maa January 11, 1910. serial N9. 536,510.

. Be it known thatA I, Amami Faser, lciti- 'zen of the United States, residin at San Francisco, in' the county`of San rane-isco y'and State of California, have'invented a' new and useful A 'paratus for Economizing Power in Precoo 1n Plants,'of which the following is a speci cation in such full and clear terms as will enable those skilled in the art to construct and use the same.

l This invention relates to an -apparatus and lmethod of economizing power 1n precooling plants, the object .being to provide means for reventing the indefinite accumulation ofp and ,to make an economical use of the waste ice thus produced. a

It will be'understood by those skilled in theart that in precooling refrigerator cars preparatory to shi ment, it is necessary 4make use of consi erable quantities of air cooled to a low temperature. This is accom- `plished by passing the air over ammonia coils, which a're maintained at eslovvr a temperature as possible, and the air 1s blown directly to the cars to be cooled. The result of this operation is that large quantities of frost collect on the cooling pipes, and when this accumulation of frost gets too thick, the

efliciency of the pipes in cooling' the air is very much reduced, owing to the fact that the coils are more or.less insulated by the 'accumulation of ice around them, thus maklow that of the formation of ice. It therefore becomes necessary to periodically ,cut the ice off'the coils in order to reduce the air passing across the coils to the 'desired "low temperature. Since this accumulation ofl ice is quiteV considerable, its loss becomes an importantI matteri in a refrigeration plant. Means are therefore provided in the lnvention herein disclosed to remove the ice from said pipes by means of a solution of some kind which does not readily freeze. Such salts as ,calcium chlorid or sodium chlorid or other salts of such character, are

`used for this purpose. The cold solution thus produced 1s made use of in cooling the refrigerant supplied the cooling coils.

In the drawing, in-which the same nulmeral of reference is applied to the same portion throughout the several views, there 1s shown a s1de elevation of -a precooling plant equipped with the means herein menl tioned for removing the frost from the cool-1 frost on the ammonia pipes,

ing it diicult to vcool the air to a point beingcoils, and for making use of the cold solution thus obtained'.

The numeral 1 represents the ground on lwhich the building 2-is erected, said building having floors 3 and 4, separate apartments -5, 6 and 7 being provided for the -installatlon of the compressor 8, the condenser 'coils 9 and the ammonia receiver 10. From the ammonia receiver a suitably valved pipe 11 leads to the liquid cooler 12, to the lower set of cooling coils 13, and from there to the upper set of cooling ycoils 14. This latter set of` cooling coils is. then connected by means of a valved pipe 15 with the compressor 8. This system of precoolin forms -thea subject matter of another app ication for atent, and is not claimed herein.

T e uids to be cooled are passed over the coils 13 and 14, and since the warm air contains considerable quantities of moisture, a thick layer of frost accumulates on the pipes 13 and 14. 4This la er of frost soon becomes so thick that the alr cannot be cooled much below the freezing point of-water, andmeans nl ust y be provided to cut the frost of the pipes in order that the bare iron may be exposed to the passing fluid. This means consists of a box 15, having drip pipes 16 and 17 extending over the coils 14, a second box 18 having pipes 20r and 21 leading from the box 18 over the coils 13. The floor 3 is inclined toward the center in the same manner as the floor 4, from which latter the pipe 19 delivers the solution from that fioor to the Hoor below. A ipe P22 leads to the liquid cooler 12 from t e floor 3, and a pipe 23 leads from the liquid cooler to a sump 24.`

A pump 25 lifts the water from'the sump 24 throughva pipe -26 to a tank 27 from which tank pi es 28 and 28 returns the solution to the oXes 15 and 18.

The solution used to cuff the frost oli" the pi es is calcium or sodium chlorid, or other sa ts of this character, which form solutions which do not readily freeze. When the layer of frost on the pipes 13 and 14 becomes too thick, the solution is allowed to drip over the If vthis warm liquid ammonia were then allowed to lpass to the coils 13 and 14, it

y would mean aconsiderable` loss ofi power in kthe coils. f

the temperature thereof to that of Therefore the cold solution formed. in removing the frost from the coils 13 and 14 is used to reduce the temperature reducin of the liquid ammonia in the cooler 12 to av temperaturel as nearthat of the coils as possible, before it is permitted to pass intosaid coils 13 and 14. It will be understood by those skilled in the art that the solution passed over the coils willrequire' additions of the substance u-sed to preventit from freezing Whenever it becomes too weak to be effective; for: the solution may be strengthened by evaporation, as desired.

Having thus described my invention, what I claim as new and desire to secure by Leters Patent of the United States, is as folows: l. In an apparatus for economizing power in refrigeration plants, a series yof cooling coils, means to supply said coils with a re-V frigerant, a liquid cooler through which said refrigerant passes on its-way to the cooling coils, drippipes over the cooling coils, and

' pipes to4 pass the solution` from the drip plpes through the liquid cooler, substantially as set` forth.

Y 2. In an apparatus for economizingpower i in refrigeration plants, a series-of cooling coils, meansto supply said-coils with a rel frigerant, a cooler through which said re; frlgerant passes on its way to the cooling coils, means to eriodically remove accumu` vlations of ice lrom the cooling coils, and means to deliver `theice and solutionv 'from said coils to the cooler to utilize the cold stored in 'such'accumulations of iceto cool I the refri erant on Iits way tothe cooling coils, as. escribed. a

3. In an apparatus for economizing power in precooling plants, a series of cooling coils,

means to compress the cooling agent, a

liquid cooler connected with said compressor and said coils, drip pipes over the coils, and means to pass the solution from .the drip pipes through the liquid cooler, as set forth.

4. In an apparatus for economizing power` in precooling plants, a series of cooling coilsi y ARTHUR AGET. Witnesses j 0. P. GRIFFIN,

J. W. MAC INNrs.