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[edit | edit source]
See also[edit | edit source]
- Comparison of Ocean wave energy conversion systems
- A Design Manual for Water Wheels
- Turbine