| 单词 | impulse turbine |
| 释义 | > as lemmasimpulse turbine impulse turbine n. a turbine in which the working fluid undergoes no drop in pressure in the rotor, this being driven solely by the change it causes in the direction of flow. ΘΚΠ society > occupation and work > equipment > machine > machines which impart power > turbine > [noun] > other turbines water turbine1859 impulse turbine1880 wind turbine1909 impulse-reaction turbine1929 pump-turbine1934 1880 Encycl. Brit. XII. 532/2 The theory of the impulse turbine does not essentially differ from that of the reaction turbine. 1881 Encycl. Brit. XII. 524/1 In some turbines the whole available energy of the water is converted into kinetic energy before the water acts on the moving part of the turbine. Such turbines are termed Impulse Turbines, and they are distinguished by this that the wheel passages are never entirely filled by the water. 1906 W. H. S. Garnett Turbines iv. 42 Impulse turbines..are unsuited for the development of high speed motion from low falls... For running, on the other hand, at low speeds under a high fall, the impulse turbine cannot be surpassed. 1971 P. J. McMahon Aircraft Propulsion v. 163 The extreme case of a zero reaction stage wherein all the pressure drop occurs in the nozzle blades is known as an ‘impulse turbine’ in accordance with steam turbine practice. A pure impulse turbine would rarely be used for an aero~turbine engine. < as lemmas |
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