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Optimized design of impulse turbines in the micro-hydro sector concerning air detrainment processes

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  • Kramer, Matthias
  • Terheiden, Kristina
  • Wieprecht, Silke

Abstract

Impulse turbines with tailwater depression are an efficient choice for energy recovery in drinking water systems. To reduce negative effects of detrained air downstream of the turbine casing, such as corrosion and reduced transport capacity, main processes and possible reduction of air detrainment have been investigated in detailed experimental studies on a micro-hydro Pelton machine with tailwater depression. The experimental setup has been designed to distinguish between dissolved and undissolved air detrainment.

Suggested Citation

  • Kramer, Matthias & Terheiden, Kristina & Wieprecht, Silke, 2015. "Optimized design of impulse turbines in the micro-hydro sector concerning air detrainment processes," Energy, Elsevier, vol. 93(P2), pages 2604-2613.
    • Handle: RePEc:eee:energy:v:93:y:2015:i:p2:p:2604-2613
    DOI: 10.1016/j.energy.2015.10.022
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    References listed on IDEAS

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    1. Padhy, M.K. & Saini, R.P., 2012. "Study of silt erosion mechanism in Pelton turbine buckets," Energy, Elsevier, vol. 39(1), pages 286-293.
    2. Padhy, M.K. & Saini, R.P., 2011. "Study of silt erosion on performance of a Pelton turbine," Energy, Elsevier, vol. 36(1), pages 141-147.
    3. Židonis, Audrius & Aggidis, George A., 2015. "State of the art in numerical modelling of Pelton turbines," Renewable and Sustainable Energy Reviews, Elsevier, vol. 45(C), pages 135-144.
    4. El-Emam, Rami Salah & Dincer, Ibrahim, 2014. "Thermodynamic and thermoeconomic analyses of seawater reverse osmosis desalination plant with energy recovery," Energy, Elsevier, vol. 64(C), pages 154-163.
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    Cited by:

    1. Kramer, M. & Terheiden, K. & Wieprecht, S., 2018. "Pumps as turbines for efficient energy recovery in water supply networks," Renewable Energy, Elsevier, vol. 122(C), pages 17-25.
    2. Delgado, J. & Ferreira, J.P. & Covas, D.I.C. & Avellan, F., 2019. "Variable speed operation of centrifugal pumps running as turbines. Experimental investigation," Renewable Energy, Elsevier, vol. 142(C), pages 437-450.

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