| 摘要 |
The operating fluid supply means for the fan-driving turbine of a cooling medium-moving device for a gas-liquid contacting apparatus comprises a plurality of supply pipes, one of which is designed to supply fluid to a main nozzle or nozzles to effect the operation of the turbine and the other or others of which is/are designed to supply fluid to a secondary nozzle or nozzles to assist the driving of the turbine and/or is/are provided with a fluid outlet aperture or apertures, the fluid issuing from which does not assist in driving the turbine, whereby the operating fluid may be selectively distributed amongst any one or more of said pipes so as to vary the speed of rotation of the turbine as desired.
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