| 摘要 |
1,125,491. Cooling liquids by direct contact with air; cooling systems. W. R. GRACE & CO. 22 Feb., 1966 [25 Feb., 1965], No. 7735/66. Headings F4K and F4U. Cooling water circulated through a hot body, e.g. a heat exchanger 33, is thereafter passed through a cooling tower 10 and is then treated in a liquid cyclone separator 24 to remove contaminents, such as bacteria absorbed from the air in the cooling tower or scale or corrosion products from the circulation system, the water then being recirculated through the heat exchanger 33. The cooling tower may comprise an inlet 12 to a manifold 16 equipped with spray nozzles 14, the water falling in counter flow to atmospheric air admitted to the cooling tower through louvres 17 and drawn through the tower by means of a fan 18. The cooled water is discharged through a sump 19 and pumped into the cyclone separator 24 where it is injected under pressure tangentially within a cylindrical top portion 26, forming a vortex. The contaminents collect around the periphery of the separator as a sludge which passes down the conical walls of the lower portion 27 of the separator and out through a discharge conduit 29. The cleaned water is discharged upwardly through an overflow pipe 31. A proportion of the water may by-pass the separator through a conduit 34, in which the flow is controlled by a valve 36. Additional water to make up for that lost in the separator is admitted by means of an inlet line 35 within the cooling tower.
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