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This article compares the bladed rotors for hydro energy conversion systems.

Type Moment of force output/size of device Fabrication requirements Difficulty of production Durability Difficulty of repair Production cost Hazard to fish ?
Devices for continous flow (rivers, ...)
Hydraulic wheels
Undershot water wheel (general) ? ? (20% efficient or less)[1][2] ? ?? ? ? ? no (AC)
Undershot water wheel (Sabegien) ? ? (?% efficient)[3][4] ? ?? ? ? ? no (AC)
Undershot water wheel (Poncelet) ? ? (?% efficient)[5][6] ? ?? ? ? ? no (AC)
Undershot water wheel (Zuppinger) ? ? (?% efficient)[7][8] ? ?? ? ? ? no (AC)
Breastshot water wheel (general) ? ? (35-45% efficient) ? ?? ? ? ? yes (UP)
Overshot water wheel (general) ? ? ( 55-70% efficient) ? ?? ? ? ? yes (UP)
Overshot water wheel (Pitchback) ? ? (55-65?% efficient) ? ?? ? ? ? yes (UP)
Devices for tides and tidal streams
Francis turbine ? ? ? ?? ? ? ? ?
Kaplan turbine ? ? ? ?? ? ? ? ?
Propeller turbine ? ? ? ?? ? ? ? ?
Bulb turbine ? ? ? ?? ? ? ? ?
Tube turbine ? ? ? ?? ? ? ? ?
Straflo turbine ? ? ? ?? ? ? ? ?
Tyson turbine ? ? ? ?? ? ? ? ?
Archimedean screw turbine ? ? ? ?? ? ? ? ?
Pelton turbine ? ? ? ?? ? ? ? ?
Turgo turbine ? ? ? ?? ? ? ? ?
Michell-Banki turbine ? ? ? ?? ? ? ? ?

Note: AC means in all circumstances UP means unless precautions are taken (eg creation of a tail race and lockoff from fish of this tail race by a grating)

References

  1. ↑ Waterwheel efficiencies
  2. ↑ Efficiencies of waterwheels
  3. ↑ Waterwheel efficiencies
  4. ↑ Efficiencies of waterwheels
  5. ↑ Waterwheel efficiencies
  6. ↑ Efficiencies of waterwheels
  7. ↑ Waterwheel efficiencies
  8. ↑ Efficiencies of waterwheels

See also

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Keywords comparisons, energy, microhydro, turbines
Authors KVDP
License CC-BY-SA-3.0
Language English (en)
Related 0 subpages, 12 pages link here
Impact 41 page views (more)
Created September 30, 2009 by KVDP
Last modified May 28, 2024 by Kathy Nativi
Cite as KVDP (2009–2024). "Comparison of bladed rotors for HECS". Appropedia. Retrieved September 19, 2024.
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