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Hydraulic model studies of a hydroelectric unit under operating conditions at hydroelectric/state area hydroelectric plants

Elistratov, V. V. / Zhilenko, V. D. / Machikha, E. P. / Gil'chenko, I. G.

Conclusions The trend toward convergence of optimal efficiency zones with respect to reduced rotational speed with decreasing$$n_{s_p } $$ is confirmed.Reverse flows in the zone between the impeller and guide apparatus and prior to the impeller determine the low level of efficiency and significant instability during the operation of a turbine with a PLG 15/984 impeller in the pump mode.The effect of eddy formation and air entrapment from the surface of the tailrace on the power curve of a horizontal capsule unit in the pump mode is manifested when the depth of the impeller axis is less than 1.$ 2D_{1} $.

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Hydraulic model studies of a hydroelectric unit under operating conditions at hydroelectric/state area hydroelectric plants

Elistratov, V. V. / Zhilenko, V. D. / Machikha, E. P. / Gil'chenko, I. G.

Conclusions The trend toward convergence of optimal efficiency zones with respect to reduced rotational speed with decreasing$$n_{s_p } $$ is confirmed.Reverse flows in the zone between the impeller and guide apparatus and prior to the impeller determine the low level of efficiency and significant instability during the operation of a turbine with a PLG 15/984 impeller in the pump mode.The effect of eddy formation and air entrapment from the surface of the tailrace on the power curve of a horizontal capsule unit in the pump mode is manifested when the depth of the impeller axis is less than 1.$ 2D_{1} $.

Hydraulic model studies of a hydroelectric unit under operating conditions at hydroelectric/state area hydroelectric plants

Elistratov, V. V. / Zhilenko, V. D. / Machikha, E. P. / Gil'chenko, I. G.

Conclusions The trend toward convergence of optimal efficiency zones with respect to reduced rotational speed with decreasing$$n_{s_p } $$ is confirmed.Reverse flows in the zone between the impeller and guide apparatus and prior to the impeller determine the low level of efficiency and significant instability during the operation of a turbine with a PLG 15/984 impeller in the pump mode.The effect of eddy formation and air entrapment from the surface of the tailrace on the power curve of a horizontal capsule unit in the pump mode is manifested when the depth of the impeller axis is less than 1.$ 2D_{1} $.

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Title:

Hydraulic model studies of a hydroelectric unit under operating conditions at hydroelectric/state area hydroelectric plants

Contributors:

Elistratov, V. V. (author) / Zhilenko, V. D. (author) / Machikha, E. P. (author) / Gil'chenko, I. G. (author)

Published in:

Hydrotechnical Construction ; 24

Publication date:

1990

ISSN:

DOI:

https://doi.org/10.1007/BF01434601

Type of media:

Article (Journal)

Type of material:

Print

Language:

English

Keywords:

Wasserbau , Zeitschrift

Classification:

BKL: 56.30 Wasserbau
Local classification TIB: 770/6550/8000

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