直交型気水ノズルから噴射される噴霧流の広がりおよび水量分布

概要

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As a forced-cooling method for hot steel products, air-atomized fog cooling is suitable for an intermediate cooling level between forced-air-cooling and water spray cooling. If conventional fog nozzles are used in steel processing lines, these nozzles will not be able to form proper fog for a long time, because small holes in these nozzles very often suffer clogging. Furthermore, there are serious problems of air economy and high level noise from high pressure atomizing. A newly improved fog nozzle enables water to be atomized with air under a pressure as low as 300 to 1000 mmH_2O. The feature of this nozzle is its simple design, a water pipe being attached to the end of a air pipe at right angles. One of the advantages of this nozzle is its capability of feeding water in a wide range of 0.1 to 10 1/min through a comparatively large water hole of inner diameter 3 to 6 mm. This report describes the design of this nozzle. The characteristics of a single fog stream from this nozzle are also shown, including atomization behavior and condition, fog spread, water distribtion in fog streams, influences of water and air pressures on atomization.
社団法人日本鉄鋼協会の論文
1979-05-01