Abstract
If the system head imposed on the pump exceeds the shut-off head, liquid flows back through the pump from the discharge to the suction nozzle in the “pumping-brake mode”. There are a number of other abnormal modes of operation which are described by the “general characteristics”. These include a turbine mode where the liquid transfers power to the rotor, which can be used to drive an electrical generator or any other machine.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Notes
- 1.
In turbine technology the term “runner” is commonly used instead of impeller and the term “guide wheel” is used instead of diffuser.
- 2.
The same subscripts are used for the calculation stations of turbine and pump operation (Chap. 3.1). The fluid in the turbine flows from high to low pressure in accordance with the subscripts 6, 5, 4, 3, 2, 1.
- 3.
It may be concluded from this observation that runaway and resistance characteristics with increasing specific speed come closer, restricting thus the turbine operating range, and that (in theory) they would coincide at a certain specific speed.
References
Buse, F.: Using centrifugal pumps as hydraulic turbines. Chem. Eng. 88, 113–117 (1981)
Chaudhry, M.H.: Applied Hydraulic Transients, 2nd edn. Van Nostrand Reinhold, New York (1987)
Cohrs, D.: Kennlinienvorausbestimmung bei Kreiselpumpen im Turbinenbetrieb. Pumpentagung, Karlsruhe (A3) (1996)
Diederich, H.: Verwendung von Kreiselpumpen als Turbinen. KSB Techn Ber 12 (1966)
Engeda, A., et al.: Auswahl von Kreiselpumpen als Turbinen. Pumpentagung, Karlsruhe (A6) (1988)
Florjancic, D.: Neue Entwicklungen auf dem Gebiet der Umkehrmaschine für Pumpspeicherwerke. Techn Rundschau Sulzer Forschungsheft (1961)
Gülich, J.F.: Energierückgewinnung mit Pumpen im Turbinenbetrieb bei Expansion von Zweiphasengemischen. Techn Rundschau Sulzer 3, 87–91 (1981)
Hergt, P., et al.: Die strömungstechnischen Eigenschaften von Kreiselpumpen im Turbinenbetrieb. Pumpentagung, Karlsruhe (C1) (1984)
Hirschberger, M., Kuhlmann, J.: Entwicklung und Einsatz doppelströmiger Kreiselpumpen als Entspannungsturbinen. In: Pumpen als Turbinen. Faragallah, Sulzbach (1993)
Martin C.S.: Representation of pump characteristics for transient analysis. ASME Winter Annual Meeting, Boston, FED, vol. 6, pp. 1–13 (1983)
Patterson, I.S., Martin C.S.: Effect of specific speed on pump characteristics and hydraulic transients in abnormal zones of operation. In: IAHR Symp Stirling, pp. 151–172 (1984)
Priesnitz, C.: Einsatzmöglichkeiten von rückwärtslaufenden Standardkreiselpumpen als Turbinen zur Energierückgewinnung. In: Pumpen und Verdichter Informationen, pp. 3–12 (1987)
Schmiedl, E.: Pumpen als Turbinen. Pumpentagung, Karlsruhe (A6) (1988)
Sharma, K.R.: Small hydroelectric projects—use of centrifugal pumps as turbines. Kirloskar Electric Co., Bangalore (1985)
Surek, D.: Axialpumpen im Turbinenbetrieb. In: Pumpen als Turbinen. Faragallah, Sulzbach (1993)
Wesche, W.: Vergleichende Betrachtung von Kreiselpumpen im Turbinenbetrieb. In: Pumpen als Turbinen. Faragallah, Sulzbach (1993)
Williams, A.A.: The turbine performance of centrifugal pumps: a comparison of prediction methods. Proc. IMechE. 208, 59–66 (1994)
Yang, C.S.: Performance of the vertical turbine pumps as hydraulic turbines. ASME Winter Annual Meeting Boston, pp. 97–102 (1983)
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
Copyright information
© 2020 Springer Nature Switzerland AG
About this chapter
Cite this chapter
Gülich, J.F. (2020). Turbine Operation, General Characteristics. In: Centrifugal Pumps. Springer, Cham. https://doi.org/10.1007/978-3-030-14788-4_12
Download citation
DOI: https://doi.org/10.1007/978-3-030-14788-4_12
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-030-14787-7
Online ISBN: 978-3-030-14788-4
eBook Packages: EngineeringEngineering (R0)