Conclusions
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1.
Vertical two-impeller impulse turbines can compete with radial-axial-type hydraulic turbines for heads H=400–500 m.
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2.
It is possible to improve impulse hydraulic turbines and increase their running speed, in order to reduce further the lower head-limit, within the range of economically feasible application.
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Literature Cited
R. E. B. Sharp, “Impulse turbines,” Mechanical Engineers Handbook, 7th edition, New York (1958).
Yu. U. Édel', “Operational features of the six-nozzle impulse turbine,” Énergomashinostroenie, No. 2 (1964).
I. Osterwalder, “Tailwater depression of multijet impulse turbine,” Water Power (September 1966).
Yu. U. Édel', Impulse Hydraulic Turbines [in Russian], Mashgiz (1963).
Hydropower Resources [in Russian], Nauka (1967).
N. N. Kovalev, Hydraulic Turbines [in Russian], Mashgiz (1961).
Additional information
Translated from Gidrotekhnicheskoe Stroitel'stvo, No. 11, pp. 10–14, November, 1970.
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Chuzhin, G.V., Édel', Y.U. Increasing the running speed of impulse hydraulic turbines. Hydrotechnical Construction 4, 1003–1008 (1970). https://doi.org/10.1007/BF02397431
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DOI: https://doi.org/10.1007/BF02397431