Selected Savonius wind turbines
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Revision as of 15:02, 21 April 2021 by Thehunter (talk | contribs) (→Project 3 - Savonius Rotor (Homemade) - Water Pump Application)
Objectives
- Collect information from projects related to Savonius rotor.
- Present the projects with the most important information.
- Evaluate strengths and weaknesses of each project.
Project 1 - How To Build mobile Savonius - Rotor eolienne
Project data | |
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Url original | https://www.youtube.com/watch?v=L3HDEkuIDYc |
Url on OHO | https://en.oho.wiki/wiki/How_To_Build_mobile_Savonius_-_Rotor_eolienne_2 |
Images | |
Technical data | |
Category | Renewable energies > Wind turbines > Savonius wind turbines |
Subclass | VA – vertical axis frame |
Use | Electricity generation |
Rotor | N-E |
Power | N-E |
Dimensions | N-E |
Components | |
Rotor | 8 blades |
Transmission | N-E
Belts and pulleys |
Generator | N-E
2 units |
Machine frame | N-E
Mobile structure |
Mast | N-E |
Brake | N-E |
Safety shutdown | N-E |
Other components | Rear suspension, tension cables, trailer anchor, board and electrical wiring |
YouTube data | |
Visits / likes / don't likes | 8180 / 42 / 2 |
Uploaded date | 12.10.2014 |
Important comments | - |
Evaluation | |||
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Score Legend: 1-> Deficient, 2-> Regular, 3-> Ok | |||
Property | Evaluator | Comments | Score |
Operational safety | Evaluator1: | thehunter: In the video it is not possible to see if there is an automatic shutdown in case of strong wind. Possibly via the generators. It is a very professional construction, so I assume that there is an automatic shutdown. The construction looks very stable. The additional lashings with wire ropes give additional use stiffness. | 3 |
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Durabilityist | Evaluator1: | thehunter: All components seem to be made of stainless steel. The structure seems adequately sized. | 3 |
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Investment cost | Evaluator1: | thehunter: I assume that because of the use of stainless steel the manufacturing cost is quite high. | 2 |
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Supply of materials, standard and purchased components | Evaluator1: | thehunter: The purchased parts, i.e. electrics, alternator, pulleys, V-belts et cetera seem to be commercially available components. | 3 |
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Manufacturing processes | Evaluator1: | thehunter: The constructor of thi sproject needs to have experience in working with stainless steel. | 2 |
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Others | Evaluator1: | thehunter: Apparently it is a very professional and sophisticated design, but also quite expensive due to the materials used. | |
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Recommendations | Evaluator1: | thehunter: Consider whether stainless steel really has to be used everywhere. | - |
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Evaluator3: | - | ||
Total score Evaluator1: | |||
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Project 2 - Savonius - rotor self-made
Project data | |
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Url original | https://www.youtube.com/watch?v=rt1aRkNBBtE |
Url on OHO | https://en.oho.wiki/wiki/Savonius_-_rotor_self-made |
Images | |
Technical data | |
Category | Renewable energies > Wind turbines > Savonius wind turbines |
Subclass | VA – vertical axis frame |
Use | Electricity generation |
Rotor | diameter: 1 m |
Power | 200 Watt max |
Dimensions | height: 1 m |
Components | |
Rotor | 3 blades |
Transmission | N-E
Belts and pulleys |
Generator | was an 80 volt permanent magnet DC motor |
Machine frame | N-E
Mobile structure |
Mast | N-E |
Brake | N-E |
Safety shutdown | N-E |
Other components | Legs, shaft, bearings |
YouTube data | |
Visits / likes / don't likes | 142.377 / 61 / 5 |
Uploaded date | 17.02.2008 |
Important comments | A hub motor from an e-bike would work better because you don't have to translate it so much. The powered generator stores its energy in lead gel batteries and is then used for lighting etc when needed. |
Evaluation | |||
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Score Legend: 1-> Deficient, 2-> Regular, 3-> Ok | |||
Property | Evaluator | Comments | Score |
Operational safety | Evaluator1: | thehunter: The developer says that the project survived one of the strongest storms ever in Germany without damage. | 3 |
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Durability | Evaluator1: | thehunter: The materials used seem to be okay for outdoor use. | 3 |
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Investment cost | Evaluator1: | thehunter: Iseems to be a relatively inexpensive construction. | 3 |
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Supply of materials, standard and purchased components | Evaluator1: | thehunter: Only materials or components that are easy to preserve seem to have been used here. | 3 |
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Manufacturing processes | Evaluator1: | thehunter: It is not clear how the sheets of the rotor blades were joined. But otherwise, no expensive or sophisticated manufacturing processes seem to have been used. | 3 |
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Others | Evaluator1: | thehunter: The vertical axis is attached directly to the roof structure of the house with two ball bearings. This is energetically unfavorable, because the roof creates strong turbulence in the air flow, which significantly reduces energy efficiency.to solve this problem would have to design and build a completely new rack, preferably with a height of several meters. If someone wants to mount a Savonius rotor directly on his peaked roof, then this is certainly a good solution. | 2 |
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Recommendations | Evaluator1: | thehunter: | - |
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Evaluator3: | - | ||
Total score: |
Project 3 - Savonius Rotor (Homemade) - Water Pump Application
Project data | |
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Url original | https://www.youtube.com/watch?v=_G4wcEOAtFA |
Url on OHO | https://en.oho.wiki/wiki/Savonius_Rotor_(Homemade)_-_Water_Pump_Application_-_Part_1_-_Feng_Shui |
Images | |
Technical data | |
Category | Renewable energies > Wind turbines > Savonius wind turbines |
Subclass | VA – vertical axis frame |
Use | Pumping water |
Rotor | N-E |
Power | N-E |
Dimensions | N-E |
Components | |
Rotor | 4 blades |
Transmission | N-E
crank-rod system |
Pump | Piston water pump |
Machine frame | N-E |
Mast | N-E |
Brake | N-E |
Safety shutdown | N-E |
Other components | Tension cables, long piston rod |
YouTube data | |
Visits / likes / don't likes | 5880 / 24 / 0 (2 videos) |
Uploaded date | 17.04.2013 |
Important comments | homemade construction, with recycled materials. |
Evaluation | |||
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Score Legend: 1-> Deficient, 2-> Regular, 3-> Ok | |||
Property | Evaluator | Comments | Score |
Operational safety | Evaluator1: | thehunter: It is not clear from the video whether the construction also provides sufficient safety in high winds or during storms. The construction seems to be made of galvanized steel pipe and, which at first glance seem a bit thin, but this can be deceiving. | 2 |
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Durability | Evaluator1: | thehunter: by using cut out 200 l tin barrels the construction looks a bit unprofessional. However, the tin drums have good stability and insensitivity to corrosion, if properly treated. Galvanized steel pipes is quite suitable as a material for the construction. The craftsmanship is not very clean, but that does not matter for the assessment. | 2 |
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Investment cost | Evaluator1: | thehunter: This is clearly a very low cost design, it is probably not possible to build a Savonius wind turbine much cheaper. | 3 |
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Supply of materials, standard and purchased components | Evaluator1: | thehunter: All materials and components seem to be readily available. | 3 |
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Manufacturing processes | Evaluator1: | thehunter: No special manufacturing processes are used. | 3 |
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Others | Evaluator1: | thehunter: | |
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Recommendations | Evaluator1: | thehunter: | - |
Evaluator2: | - | ||
Evaluator3: | - | ||
Total score: |
Project 4 - Savonius rotor self-made (in use)
Project data | |
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Url original | https://www.youtube.com/watch?v=3NCPkuCk1Ts |
Url on OHO | https://en.oho.wiki/wiki/Savonius_rotor_self-made_(in_use) |
Images | |
Technical data | |
Category | Renewable energies > Wind turbines > Savonius wind turbines |
Subclass | VA – vertical axis frame |
Use | Electricity generation |
Rotor | N-E |
Power | N-E
4 super bright, white LEDs are operated |
Dimensions | N-E |
Components | |
Rotor | 2 blades - small scale |
Transmission | N-E |
Generator | N-E |
Machine frame | N-E |
Mast | N-E |
Brake | N-E |
Safety shutdown | N-E |
Other components | current limiting module (3.5 volts / 120 mA) connected upstream |
YouTube data | |
Visits / likes / don't likes | 40.338 / 45 / 5 (2 videos) |
Uploaded date | 21.05.2009 |
Important comments | Small speeds or low wind speeds are completely sufficient |
Evaluation | |||
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Score Legend: 1-> Deficient, 2-> Regular, 3-> Ok | |||
Property | Evaluator | Comments | Score |
Operational safety | Evaluator1: | ||
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Durability | Evaluator1: | ||
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Investment cost | Evaluator1: | ||
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Supply of materials, standard and purchased components | Evaluator1: | ||
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Manufacturing processes | Evaluator1: | ||
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Others | Evaluator1: | ||
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Recommendations | Evaluator1: | - | |
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Evaluator3: | - | ||
Total score: |
Summary
Project 1 | Project 2 | Project 3 | Project 4 | |
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Title | How To Build mobile Savonius - Rotor eolienne | Savonius - rotor self-made | Savonius Rotor (Homemade) - Water Pump Application | Savonius rotor self-made (in use) |
Url | https://www.youtube.com/watch?v=L3HDEkuIDYc | https://www.youtube.com/watch?v=rt1aRkNBBtE | https://www.youtube.com/watch?v=_G4wcEOAtFA |
https://www.youtube.com/watch?v=3NCPkuCk1Ts |
OHO url | https://en.oho.wiki/wiki/How_To_Build_mobile_Savonius_-_Rotor_eolienne_2 | https://en.oho.wiki/wiki/Savonius_-_rotor_self-made | https://en.oho.wiki/wiki/Savonius_Rotor_(Homemade)_-_Water_Pump_Application_-_Part_1_-_Feng_Shui | https://en.oho.wiki/wiki/Savonius_rotor_self-made_(in_use) |
Use | Electricity generation | Electricity generation | Water Pumping | Electricity generation |
Recomendations | - | - | - | - |
Total score | - | - | - | - |