GB446345A - Improvements relating to the cooling of liquids in storage vessels - Google Patents

Abstract

446,345. Cooling beer &c. CARBON DIOXIDE CO., Ltd., 663, Martin's Bank Buildings, Water Street, Liverpool, and PAUL, C. E., Weyridge, Kingsway, Gayton, Heswall, Cheshire. Oct. 26, 1934, No. 30782. [Class 29] Draught beer or other liquid is cooled in an annular chamber 3, heat insulated on its exterior, by solidified carbon dioxide contained in an inner vessel 1 separated from the beer chamber by an intermediate annular chamber 7 containing a non-freezing liquid, such as a mixture of glycerine and methylated spirits. A finely divided powder of good heat conductivity, particularly aluminium powder, may be suspended or dispersed in the non-freezing liquid. The beer may be pre-cooled in a coil 5 in the non-freezing liquid before it enters the chamber 3, and the non-freezing liquid may be agitated by allowing the gaseous carbon dioxide to pass into it through tangential nozzles on tubes 8 before the gas escapes through a valve 12. The beer chamber has a dished bottom 9 preferably provided with a drain cock, and the beer is discharged from the lower part of the chamber through a pipe 11 which extends through the insulation. The solid carbon dioxide may be supported in a wire basket which may be removed from the vessel 1 when cooling is not required.