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Difference between revisions of "Darrieus Turbine - 2m combined"

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|Images={{ProjektImages
|Images={{ProjektImages
|projectimage=oho_tdc2_render4.jpg
|projectimage=oho_tdc2_render4.jpg
}}{{ProjektImages
|projectimage=oho_tdc2_render3.jpg
}}{{ProjektImages
}}{{ProjektImages
|projectimage=oho_tdc2_001.jpg
|projectimage=oho_tdc2_001.jpg
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|firstin=https://youtube.com/shorts/Alf6EOTmlHM?feature=share
|firstin=https://youtube.com/shorts/Alf6EOTmlHM?feature=share
|trans_status=WT
|trans_status=WT
|desc=
|desc=__TOC__
__TOC__
<!-- Manufacturing project, Supported by: GLS Treuhand Stiftung Neue Energie -->
<!-- Manufacturing project, Supported by: GLS Treuhand Stiftung Neue Energie -->
|licence=CCBYSA40
|licence=CCBYSA40
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|versioning_system=yes
|versioning_system=yes
|contains_pdf_drawings=yes
|contains_pdf_drawings=yes
|technology_readyness_level=8
|technology_readyness_level=5
|TechDoc={{ProjektComponent
|TechDoc={{ProjektComponent
|cmptitle=PDF plans
|cmptitle=PDF plans
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}}{{ProjektComponent
}}{{ProjektComponent
|cmptitle=CAD files
|cmptitle=CAD files
|cmpimage=oho_tdc2_render3.jpg
|cmpimage=oho_tdc2_render7.jpg
|cmpfile1=oho_tdc2_STP-files.zip
|cmpfile1=oho_tdc2_STP-files.zip
|cmpfile2=oho_tdc2_DWG-files.zip
|cmpfile2=oho_tdc2_DWG-files.zip
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|cmptitle=Technical development
|cmptitle=Technical development
|cmpimage=oho_tdc2_dt1.jpg
|cmpimage=oho_tdc2_dt1.jpg
|cmpfile1=Turbina eólica Darrieus 2022_detalles de desarrollo técnico_0.05.pdf
|cmpfile1=Turbina eólica Darrieus 2022_detalles de desarrollo técnico_0.05.pdf<!--
<!-- |cmpfile2=Darrieus 2022 desarrollo técnico 0.02.xls -->
|cmpfile2=Darrieus 2022 desarrollo técnico 0.02.xls -->
}}
}}{{ProjektComponent
 
{{ProjektComponent
|cmptitle=Project development<!--
|cmptitle=Project development<!--
|cmpimage=Oho_tdc2_imgref1.jpg -->
|cmpimage=Oho_tdc2_imgref1.jpg -->
|cmpimg=
|cmpimg=Based on the DIN 2221 standard, among others, OHO has established a series of <i class="mw-customtoggle-div1" style="color:#1b599a;">stages</i> in which the satisfactory [[Processes_involved_in_Project_Development|completion of this project]] was carried out
Based on the DIN 2221 standard, among others, OHO has established a series of <i class="mw-customtoggle-div1" style="color:#1b599a;">stages</i> in which the satisfactory [[Processes_involved_in_Project_Development|completion of this project]] was carried out
<div style="margin:20px"></div>
<div style="margin:20px"></div>
<div class="mw-collapsible" id="mw-customcollapsible-div1" data-origID="mw-customcollapsible-div1"><!-- mw-collapsed -->
<div class="mw-collapsible" id="mw-customcollapsible-div1" data-origID="mw-customcollapsible-div1"  data-origID="mw-customcollapsible-div1"><!-- mw-collapsed -->
==== 1 Feasibility study ====
==== 1 Feasibility study ====
-----
-----
Line 106: Line 104:
::: * Work with fiberglass
::: * Work with fiberglass
::: * Wood carving for the molds of the blades
::: * Wood carving for the molds of the blades
::: * Static alignment
<!-- ::: * Static alignment -->
<div style="margin:100px"></div>
<div style="margin:100px"></div>
* Sustainability  
* Sustainability  
Line 173: Line 171:
* OHO Search engine
* OHO Search engine
: Customization of the OHO search engine
: Customization of the OHO search engine
[[File:Oho_tdc2_oho-search1.jpg|300px|thumb|link=https://en.oho.wiki/wiki/Category:Horizontal_axis_wind_turbines]]
[[File:Oho_tdc2_oho-search1.jpg|300px|thumb|link=https://en.oho.wiki/wiki/Special:RunQuery/projectSearch?pfRunQueryFormName=projectSearch&ProjektSearch%5Bsearch%5D=turbine+vertical&wpRunQuery=Search]]
: Due to the variety of titles that the OHO search engine was able to track on the Internet, in this case we worked with the category classifier to refine an initial list of examples of horizontal axis wind turbines
: When doing a search in our repository, Darrieus-type turbines are loaded together with the group of vertical axis turbines, generating some results like those shown, even from equipment that is not strictly Darrieus, but with similar operating principles.
<div style="margin:160px"></div>
<div style="margin:120px"></div>
<!--
* Manual search
* Manual search
: Manual search in Google, Youtube, special websites etc.
: Manual search in Google, Youtube, special websites etc.


[[File:Oho_tdc2_EPmW-BjCiWI.jpg|300px|thumb|link=https://www.youtube.com/watch?v=EPmW-BjCiWI]]
[[File:Oho_tdc2_nT7QgD_PSlc.jpg|300px|thumb|link=https://www.youtube.com/watch?v=nT7QgD_PSlc]]
<div style="column-count:2">
<div style="column-count:2">
:::: * Title: Build A Home Wind Turbine - DIY Turbine - Off Grid Living!
:::: * Title: Building a vertical axis wind turbine_H type
:::: * Views: 1700000
:::: * Views: 2469
:::: * Likes: 27214
:::: * Likes: 57
:::: * Comments:  
:::: * Comments: 8
:::: * Rotor diameter [m]: 3.7
:::: * Blade height [m]: 1.2
:::: * Power [W]: 3000
:::: * Low speed start: Pitch control
:::: * Security system: Furling activated at 13m/s
:::: * Generator: 12V DC motor with reducer
:::: * Generator: Three-phase, 12-coil, 16-pole permanent magnet
:::: * Airfoil: NACA 0018
:::: * Theoretical efficiency [%]: 16
:::: * Airfoil: SD7032
</div>
</div>
<div style="margin:100px"></div>
<div style="margin:140px"></div>
[[File:Oho_tdc2_zWIiL7JjRtY.jpg|300px|thumb|link=https://www.youtube.com/watch?v=zWIiL7JjRtY]]
[[File:Oho_tdc2_7GipP7c.jpeg|300px|thumb|link=https://www.youtube.com/shorts/Alf6EOTmlHM]]
<div style="column-count:2">
<div style="column-count:2">
:::: * Title: How To Build An Off Grid Wind Turbine - 1000 Watts!
:::: * Title: DIY 1kw Darrieus VAWT
:::: * Views: 105805
:::: * Views: 51292
:::: * Likes: 2173
:::: * Likes: 794
:::: * Comments:  
:::: * Comments: 37
:::: * Rotor diameter [m]: 2.4
:::: * Power [W]: 608
:::: * Power [W]: 1000
:::: * Low speed start: No
:::: * Security system: Furling activated at 13m/s
:::: * Blade height [m]: 2
:::: * Generator: Three-phase, 9-coil permanent magnet
:::: * [https://www.fieldlines.com/index.php/topic,150186.0.html Main reference machine]
:::: * Theoretical efficiency [%]: 16
:::: * Airfoil: -
</div>
</div>
<div style="margin:120px"></div>
<div style="margin:300px"></div>
[[File:Oho_tdc2_The-2F-turbine-Pureselfmade-600x600.jpg|300px|thumb|link=http://scoraigwind.co.uk/measured-performance-versus-recipe-book-predictions/aands-aep-2/]]
[[File:Oho_tdc2_DTETK1Clb7w.jpg|300px|thumb|link=https://www.youtube.com/watch?v=DTETK1Clb7w]]
<div style="column-count:2">
<div style="column-count:2">
:::: * Title: The 2F Piggott Turbine Design
:::: * Title: DIY VAWT wind turbine generator 2016
:::: * Rotor diameter [m]: 2
:::: * Views: 71797
:::: * Power [W]: 550
:::: * Likes: 482
:::: * Security system: Furling
:::: * Comments: 20
:::: * Generator: Three-phase, Permanent Ferrite Magnet
:::: * Blade height [m]: 1.2
:::: * Theoretical efficiency [%]: 17
:::: * Power [W]: 70
:::: * Airfoil: NACA 4412
:::: * Low speed start: No
:::: * Generator: Axial flux alternator
:::: * Theoretical efficiency [%]: 29
</div>
</div>
<div style="margin:240px"></div>
<div style="margin:140px"></div>
[[File:Oho_tdc2_3F-turbine-pureselfmade-600x600.jpg|300px|thumb|link=https://pureselfmade.com/turbine-details/]]
[[File:Oho_tdc2_0jLA2u_G4Dg.jpg|300px|thumb|link=https://www.youtube.com/watch?v=0jLA2u_G4Dg]]
<div style="column-count:2">
<div style="column-count:2">
:::: * Title: The 3F Piggott Turbine Design
:::: * Title: Building a Vertical Axis Wind Turbine. We no longer sell this R2-40 Rotating Assembly.
:::: * Rotor diameter [m]: 3
:::: * Views: 1712601
:::: * Power [W]: 1000
:::: * Likes: 12024
:::: * Security system: Furling
:::: * This example was added just to show a more robust design than usual
:::: * Generator: Three-phase, Permanent Ferrite Magnet
:::: * Theoretical efficiency [%]: 13
:::: * Airfoil: NACA 4412
</div>
</div>
<div style="margin:240px"></div>
<div style="margin:200px"></div>
[[File:Oho_tdc2_P5010001-600x450.jpg|300px|thumb|link=https://pureselfmade.com/turbine-details/]]
<!-- * Networking
<div style="column-count:2">
:::: * Title: The 4F Piggott Turbine Design
:::: * Rotor diameter [m]: 4
:::: * Power [W]: 2000
:::: * Security system: Furling
:::: * Generator: Three-phase, Permanent Ferrite Magnet
:::: * Theoretical efficiency [%]: 15
:::: * Airfoil: NACA 4412
</div>
<div style="margin:130px"></div>
<!~~ * Networking
: Contacting partners, associated organizations and experts
: Contacting partners, associated organizations and experts
[[File:Oho_tdc2_mFC_93DW_XQ-0017.jpg|300px|thumb|link=https://www.youtube.com/watch?v=mFC_93DW_XQ]]
[[File:Oho_tdc2_mFC_93DW_XQ-0017.jpg|300px|thumb|link=https://www.youtube.com/watch?v=mFC_93DW_XQ]]
: During the initial stages of this project, we were able to contact the channel [https://www.youtube.com/@OpenSourceLowTech Opensourcelowtech] and exchange some ideas, for which we are very grateful
: During the initial stages of this project, we were able to contact the channel [https://www.youtube.com/@OpenSourceLowTech Opensourcelowtech] and exchange some ideas, for which we are very grateful
: Initially, work was done on a replica of [https://www.youtube.com/watch?v=DHW392drALI one of their project], which served as experience for this case  
: Initially, work was done on a replica of [https://www.youtube.com/watch?v=DHW392drALI one of their project], which served as experience for this case  
<div style="margin:160px"></div> ~~>
<div style="margin:160px"></div> -->
==== 4 Development and documentation ====
==== 4 Development and documentation ====
----
----
Plans and specifications of all parts and components
Plans and specifications of all parts and components
* Analisis of functions & structures
* Analisis of functions & structures
[[File:Oho_tdc2_detail1.jpg|300px|thumb|link=#Technical_development]]
[[File:Oho_tdc2_011.jpg|300px|thumb|link=#Technical_development]]
: Analysis of functions, assemblies and components
: Analysis of functions, assemblies and components
: A review of the most important technical aspects in the design of this equipment was carried out, managing to identify and select its components, as well as its operating principles
: The conversion from wind energy to electricity occurs due to the shape of the blade profile, so one of the most important aspects of this project was to achieve an aerodynamic profile with the techniques and tools available for Appropriate Technologies
: It should be noted that most of the information obtained comes from the developer [http://scoraigwind.co.uk Piggott], who has made public a lot of very useful data for this project.
: Additionally, the goal was set for the equipment to have a starting system at low wind speed, which was observed in commercial equipment but not much in DIY cases
<div style="margin:150px"></div>
<div style="margin:150px"></div>
* Technical solutions
* Technical solutions
Line 262: Line 243:
:: * Evaluated detail: Blade Construction
:: * Evaluated detail: Blade Construction
<div style="margin-left:30px"><ul>  
<div style="margin-left:30px"><ul>  
<li style="display: inline-block;"> [[File:Oho_tdc2_vSyOVQ3.jpeg|thumb|none|200px|carved wood|link=https://youtu.be/zWIiL7JjRtY?t=240]] </li>
<li style="display: inline-block;"> [[File:Oho_tdc2_QgR5xIdiONo.jpg|thumb|none|200px|Wooden ribs covered with flexible foil|link=https://www.youtube.com/watch?v=QgR5xIdiONo]] </li>
<li style="display: inline-block;"> [[File:Oho_tdc2_Ld2jXYo.jpeg|thumb|none|200px|Molded fiberglass|link=https://scoraigwind.com/download/windrotord.pdf]] </li>
<li style="display: inline-block;"> [[File:Oho_tdc2_wMM2m5Lkslw.jpg|thumb|none|200px|Fiberglass covered ribs|link=https://www.youtube.com/watch?v=wMM2m5Lkslw]] </li>
<li style="display: inline-block;"> [[File:Oho_tdc2_lQ5v0gz.jpeg|thumb|none|200px|Fiberglass with ribs|link=https://www.youtube.com/watch?v=g2-NFXwPI24]] </li>
<li style="display: inline-block;"> [[File:Oho_tdc2_IFRX5s76ofM.jpg|thumb|none|200px|Wire cut foam material|link=https://www.youtube.com/watch?v=IFRX5s76ofM]] </li>
<li style="display: inline-block;"> [[File:Oho_tdc2_ZSl1v7DymoU.jpg|thumb|none|200px|Carbon fiber with foam sheet|link=https://www.youtube.com/watch?v=YF7wHlWW5XY]] </li>
<li style="display: inline-block;"> [[File:Oho_tdc2_lEHK4KeKxfs.jpg|thumb|none|200px|With PVC pipes|link=https://www.youtube.com/watch?v=lEHK4KeKxfs]] </li>
</ul></div>
</ul></div>
:: * Evaluated detail: Airfoil
:: * Evaluated detail: Airfoil
<div style="margin-left:30px"><ul>  
<div style="margin-left:30px"><ul>  
<li style="display: inline-block;"> [[File:Oho_tdc2_eTOxU9x.jpeg|thumb|none|200px|NACA 4412|link=http://airfoiltools.com/airfoil/details?airfoil=naca4412-il]] </li>
<li style="display: inline-block;"> [[File:Oho_tdc2_IFRX5s76ofM.jpg|thumb|none|200px|NACA 0018|link=https://www.youtube.com/watch?v=IFRX5s76ofM]] </li>
<li style="display: inline-block;"> [[File:Oho_tdc2_77wcU84.jpeg|thumb|none|200px|SD7032|link=http://airfoiltools.com/airfoil/details?airfoil=sd7032-il]] </li>
<li style="display: inline-block;"> [[File:Oho_tdc2_6SASRw4.jpeg|thumb|none|200px|NACA 1418|link=https://mdpi-res.com/d_attachment/energies/energies-13-03196/article_deploy/energies-13-03196.pdf?version=1592567343]] </li>
<li style="display: inline-block;"> [[File:Oho_tdc2_rSFR4rV.jpeg|thumb|none|200px|K2|link=http://airfoiltools.com/airfoil/details?airfoil=k2-il]] </li>
<li style="display: inline-block;"> [[File:Oho_tdc2_Nd9Hyf9.jpeg|thumb|none|200px|NACA 0015|link=http://educypedia.karadimov.info/library/finalreport.pdf]] </li>
<li style="display: inline-block;"> [[File:Oho_tdc2_jBkZZd2.jpeg|thumb|none|200px|AH93W215|link=https://www.researchgate.net/publication/335320655_A_Comparison_Study_of_Airfoils_Used_in_H-Rotor_Darrieus_Wind_Turbine]] </li>
<li style="display: inline-block;"> [[File:Oho_tdc2_KmfOcqD.jpeg|thumb|none|200px|S-1046|link=https://www.sciencedirect.com/science/article/abs/pii/S0360544212006755]] </li>
<li style="display: inline-block;"> [[File:Oho_tdc2_R6nQrCm.jpeg|thumb|none|200px|NACA 0024|link=https://www.semanticscholar.org/paper/Computational-Analysis-of-Various-Airfoil-Profile-Modi-Gilke/e0982a5b3c37c67a57960de9c30c162af83a0b77]] </li>
</ul></div>
</ul></div>
:: * Evaluated detail:  Generator type
:: * Evaluated detail:  Generator type
<div style="margin-left:30px"><ul>  
<div style="margin-left:30px"><ul>  
<li style="display: inline-block;"> [[File:Oho_tdc2_W9KErFi.jpeg|thumb|none|200px|Axial flux with ferrite magnets|link=https://www.scoraigwind.com/pmgbooklet/itpmg.pdf]] </li>
<li style="display: inline-block;"> [[File:Oho_tdc2_nT7QgD_PSlc.jpg|thumb|none|200px|DC Motor|link=https://www.youtube.com/watch?v=nT7QgD_PSlc]] </li>
<li style="display: inline-block;"> [[File:Oho_tdc2_nGMHube.jpeg|thumb|none|200px|Axial flux with neodymium magnets|link=https://youtu.be/EPmW-BjCiWI?t=206]] </li>
<li style="display: inline-block;"> [[File:Oho_tdc2_DTETK1Clb7w.jpg|thumb|none|200px|Axial flux alternator|link=https://www.youtube.com/watch?v=DTETK1Clb7w]] </li>
<li style="display: inline-block;"> [[File:Oho_tdc2_ssLJZM5.jpeg|thumb|none|200px|Car alternator|link=https://youtu.be/4Pa3-pVYSLQ?t=737]] </li>
<li style="display: inline-block;"> [[File:Oho_tdc2_0BE5cuap2AQ.jpg|thumb|none|200px|Car alternator|link=https://www.youtube.com/watch?v=0BE5cuap2AQ]] </li>
<li style="display: inline-block;"> [[File:Oho_tdc2_HR7BNda.jpeg|thumb|none|200px|Modified Permanent Magnet Motor|link=https://www.youtube.com/watch?v=_McQqHCRmwA]] </li>
</ul></div>
</ul></div>
:: * Evaluated detail:  Speed regulation (more complex variants are excluded)
:: * Evaluated detail:  Self start method
<div style="margin-left:30px"><ul>  
<div style="margin-left:30px"><ul>  
<li style="display: inline-block;"> [[File:Oho_tdc2_d9Wk0vj.jpeg|thumb|none|200px|tail curl - Furling|link=https://youtu.be/STEU2ONd58A?t=335]] </li>
<li style="display: inline-block;"> [[File:Oho_tdc2_wHu1bRso4u0.jpg|thumb|none|200px|Combined Savonius|link=https://www.youtube.com/watch?v=wHu1bRso4u0]] </li>
<li style="display: inline-block;"> [[File:Oho_tdc2_umdb5vt.jpeg|thumb|none|200px|Cross vane or stabilizer fin - American|link=https://www.monografias.com/trabajos39/aerogeneradores/aerogeneradores.shtml]] </li>
<li style="display: inline-block;"> [[File:Oho_tdc2_paj1myckU-w.jpg|thumb|none|200px|Variable pitch|link=https://www.youtube.com/watch?v=paj1myckU-w]] </li>
<li style="display: inline-block;"> [[File:Oho_tdc2_BlIM43fRp60.jpg|thumb|none|200px|Magnus effect|link=https://www.youtube.com/watch?v=BlIM43fRp60]] </li>
</ul></div>
</ul></div>
:: * Evaluated detail:  Mast Type
:: * Evaluated detail:  Mast Type
<div style="margin-left:30px"><ul>  
<div style="margin-left:30px"><ul>  
<li style="display: inline-block;"> [[File:Oho_tdc2_LHTyMbL.jpeg|thumb|none|200px|Tubular post|link=https://youtu.be/EPmW-BjCiWI?t=1262]] </li>
<li style="display: inline-block;"> [[File:Oho_tdc2_7GipP7c.jpeg|thumb|none|200px|Truss tower|link=https://www.youtube.com/shorts/Alf6EOTmlHM]] </li>
<li style="display: inline-block;"> [[File:Oho_tdc2_HJUi1a9.jpeg|thumb|none|200px|Truss tower|link=https://youtu.be/Iqp3g0F3Ng4?t=803]] </li>
<li style="display: inline-block;"> [[File:Oho_tdc2_0B1Fb2m0W20.jpg|thumb|none|200px|Tubular post|link=https://www.youtube.com/watch?v=0B1Fb2m0W20]] </li>
</ul></div>
</ul></div>


Line 301: Line 285:
: Among some revised and improved aspects of the project, prior to the publication of the plans, we can mention:
: Among some revised and improved aspects of the project, prior to the publication of the plans, we can mention:
:: * Improvements in the presentation format of technical notes, they include illustrations on manufacturing
:: * Improvements in the presentation format of technical notes, they include illustrations on manufacturing
:: * Strictness in the construction of the blades, to achieve the most aerodynamic profile possible, while keeping the construction techniques accessible, published by H. Piggott
:: * Using a template with a grid for quick copying of the airfoil and manufacturing of the blades
:: * Improvements in the design of the truss tower, achieving good performance, without the need to acquire inaccessible iron profiles
:: * Use of metal straps to hold the Savonius internal blade (version 0.02 - part 1.18)
:: * Simplification in the H-shape of the turbine structure, without requiring tensioning trusses in it
<div style="margin:20px"></div>
<div style="margin:20px"></div>
==== 5. Manufacturing, tests and improvements ====
==== 5. Manufacturing, tests and improvements ====
Line 309: Line 294:
* Workshop <br> Determination of the workshop for manufacturing:
* Workshop <br> Determination of the workshop for manufacturing:
: This project is considered as belonging to the group of Appropriate Technologies, for which it has been developed with the intention of the greatest possible access to processes and materials by the developers, with a basic, moderately equipped workshop, however, it is necessary also have the following facilities:
: This project is considered as belonging to the group of Appropriate Technologies, for which it has been developed with the intention of the greatest possible access to processes and materials by the developers, with a basic, moderately equipped workshop, however, it is necessary also have the following facilities:
:: * Tools and materials for working with polyester resins
:: * Tools and materials for working with fiberglass
:: * Tools for carving wood, in the case of blades
:: * Tools for carving wood, in the case of blade moulds
:: * Adequate spaces, tools and equipment to carry out electrical work, in the case of generator connections and the associated electrical network
:: * Adequate spaces, tools and equipment to carry out electrical work, in the case of generator connections and the associated electrical network
: Although these conditions do not pose a greater difficulty during manufacturing, it is left to the developer's discretion to choose between carrying out this work or requesting the services of a third party to guarantee a professional work
: Although these conditions do not pose a greater difficulty during manufacturing, it is left to the developer's discretion to choose between carrying out this work or requesting the services of a third party to guarantee a professional work


The purchasing, prototype manufacturing, testing, and documentation updating sub-processes, will be developed once the manufacturing stage is completed
The purchasing, prototype manufacturing, testing, and documentation updating sub-processes, will be developed once the manufacturing stage is completed
<!~~ * Purchase
<!-- * Purchase
[[File:Oho_tdc2_materials-list1.png|300px|thumb]]
[[File:Oho_tdc2_materials-list1.png|300px|thumb]]
: Purchase of materials and components:
: Purchase of materials and components:
Line 342: Line 327:
** Pieces 2.5 and 2.6, manufactured in 1/2" square bar, available in the workshop
** Pieces 2.5 and 2.6, manufactured in 1/2" square bar, available in the workshop
** Mobile blade (piece 2.7), with dimensions adjusted according to the leaf spring piece achieved, recovered material
** Mobile blade (piece 2.7), with dimensions adjusted according to the leaf spring piece achieved, recovered material
:Plans are expected to be updated with these changes, in order to have accurate information regarding the equipment manufactured ~~>
:Plans are expected to be updated with these changes, in order to have accurate information regarding the equipment manufactured -->
==== 6. Certification DIN Spec 3105 ====
==== 6. Certification DIN Spec 3105 ====
-----
-----
Line 358: Line 343:
** [[User:Thehunter|Thehunter]]
** [[User:Thehunter|Thehunter]]
* Peer-reviews <br> Realization of the peer reviews, technical clarification, improvements:
* Peer-reviews <br> Realization of the peer reviews, technical clarification, improvements:
:: * In process
:: In the [[#Parts_list|Parts list]] section, necessary comments and discussions have been made by the assigned reviewers and the developer
:: * In the [[#Parts_list|Parts list]] section, some comments have been made
 
* Certificate <br> Issue of the certificate: In process
* Certificate <br> Issue of the certificate: <br>
[[File:oho_tdc2_attestation_Darrieus-Turbine-2m-combined.png|300px|thumb|link=https://cdata.oho.wiki/images/7/78/Oho_tdc2_attestation_Darrieus-Turbine-2m-combined.pdf]]
<!-- [[File:oho_cs14_attestation_solar-cooker-1-4m.png|300px|thumb|link=Media:Oho_cs14_attestation_solar-cooker-1-4m.pdf]] -->
The project was reviewed by two reviewers from the OHO team. The review consisted of the following components:
: * Completeness check: Checks if all required documents have been submitted.
: * Review of the submitted documents: Checks if the information in the submitted documents is complete and correct.
:: - Bill of materials
:: - Are all parts and assemblies covered?
:: - Are all quantities correct?
:: - Are all required material specifications available?
:: - Are all specifications for purchased parts and standard parts complete?
: * Technical drawings
:: - Are all the required views available?
:: - Are all required dimensional data available?
: * Suggestions for improvement
 
Detail abot the review process: https://en.oho.wiki/wiki/Instructions_for_Reviewers


Permanent Link: https://en.oho.wiki/index.php?title=Darrieus_Turbine_-_2m_combined&oldid=45791
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Latest revision as of 14:17, 6 April 2023


Darrieus Turbine - 2m combined

Basic Data

Category: Wind turbines

URL (first publication): https://youtube.com/shorts/Alf6EOTmlHM?feature=share

Keywords: wind turbine, vertical, vawt, blades, piggott, alternator, efficiency, lattice tower, airfoil, AH93W215, savonius, auto start

License: CC BY-SA 4.0

Organization: OHO

Project status: Active

Certification status: Approved

Technical documentation

Maturity of the project: prototype


Contains PDF-drawings: Yes

CAD files are editable: Yes

Assembly instructions are published: Yes

Bill of materials is published: Yes







no

yes yes 








Oho tdc2 render4.jpg

  Oho tdc2 render4.jpgOho tdc2 render3.jpgOho tdc2 001.jpgOho tdc2 002.jpgOho tdc2 003.jpgOho tdc2 004.jpgOho tdc2 005.jpgOho tdc2 006.jpgOho tdc2 007.jpgOho tdc2 008.jpgOho tdc2 009.jpgOho tdc2 011.jpgOho tdc2 023.jpgOho tdc2 036.jpg

Description

Technical documentation

PDF plans

Oho tdc2 001.jpg 
Files:

oho_tdc2_Turbina Darrieus combinada de 2m_0.02.pdf

CAD files

Oho tdc2 render7.jpg 
Files:

oho_tdc2_STP-files.zip
oho_tdc2_DWG-files.zip
oho_tdc2_CAD-files.zip

Technical development

Oho tdc2 dt1.jpg 
Files:

Turbina eólica Darrieus 2022_detalles de desarrollo técnico_0.05.pdf

Project development

Based on the DIN 2221 standard, among others, OHO has established a series of stages in which the satisfactory completion of this project was carried out

1 Feasibility study

Manufacturing as OSAT technology is possible?

Oho tdc2 002.jpg
  • Materials, components
Required materials and components can be sourced or replaced locally?
✗ No, Some electronic components may be required from external sources
The materials used in this project can be purchased locally, with the exception of some elements that, depending on the area where the equipment is built, will have to be purchased in online stores, such as:
* Charge controller
* Inverter
* Dump load
Oho tdc2 0jLA2u G4Dg-0708.png
  • Manufacturing processes
Required manufacturing processes can be povided locally?
✓ Yes
No specialized knowledge or complex equipment is required to manufacture this turbine
Oho teh2 W9KErFi.jpeg
Even in the manufacture of the generator, the tasks can be carried out by personnel with general training in workshop processes
Oho tdc2 wMM2m5Lkslw.jpg
  • Specific training
Is specific training for manufacturing necessary and can be provided?
✗ No
Specific training is not considered necessary for the execution of this project, however, in addition to general knowledge of workshop processes, it will be advisable to have notions in:
* Work with fiberglass
* Wood carving for the molds of the blades
  • Sustainability
Do all materials and processes meet the sustainability criteria?
✓ Yes
The product and its production process can be considered as sustainable

2 Market analisis and requirements Functional and quantitative requirements

Functional and quantitative requirements

  • Market analysis
Analysis of the current products on the market:
Oho tdc2 y7xJrGTdqxQ.png
VAWT Darrieus Vertical Axis Wind Turbine with 3 phase axial flux generator
* Price [USD]: -
* Source: amazon
* Country: USA
* Machine condition: New
* Rotor diameter [m]: 1
* Indicated power [W]: 100
* Blade height [m]: 1
* Low speed start: No
Oho tdc2 zIFD6oY0 fE.png
ADSE-ER Vertical Wind Turbine, Wind Turbine Kit 1000W Darrieus Savonius Wind Power Generator with MPPT Controller 3 Fiberglass Blades for Deck, Marine, Motorhome (12 V)
* Price [USD]: 1330
* Source: amazon
* Country: China
* Machine condition: New
* Rotor diameter [m]: 0.6
* Indicated power [W]: 1000
* Blade height [m]: 0.95
* Low speed start: Yes
Oho tdc2 tRQzG5HvG9M.png
promotion vertical wind generator eolienne verticale 1500w renewable energy
* Price [USD]: 432
* Source: alibaba
* Country: China
* Machine condition: New
* Rotor diameter [m]: 0.6
* Indicated power [W]: 1000
* Blade height [m]: 1.1
* Low speed start: Yes
  • Requirements definition
    Definition of the main technical data:
    • Rotor diameter [m]: 1 - 2
    • Power [W]: 500 - 1000
    • Blade height [m]: 0.8 - 1.5
  • Optimal functions and features
    Definition of necessary/optional functions and features:
    • Generator: Mandatory
    • Low speed start: Mandatory
    • Battery and charge controller: Desirable

3 Search & analisis DIY technologies

The best technical solutions for all parts and components

  • OHO Search engine
Customization of the OHO search engine
Oho tdc2 oho-search1.jpg
When doing a search in our repository, Darrieus-type turbines are loaded together with the group of vertical axis turbines, generating some results like those shown, even from equipment that is not strictly Darrieus, but with similar operating principles.
  • Manual search
Manual search in Google, Youtube, special websites etc.
Oho tdc2 nT7QgD PSlc.jpg
* Title: Building a vertical axis wind turbine_H type
* Views: 2469
* Likes: 57
* Comments: 8
* Blade height [m]: 1.2
* Low speed start: Pitch control
* Generator: 12V DC motor with reducer
* Airfoil: NACA 0018
Oho tdc2 7GipP7c.jpeg
* Title: DIY 1kw Darrieus VAWT
* Views: 51292
* Likes: 794
* Comments: 37
* Power [W]: 608
* Low speed start: No
* Blade height [m]: 2
* Main reference machine
Oho tdc2 DTETK1Clb7w.jpg
* Title: DIY VAWT wind turbine generator 2016
* Views: 71797
* Likes: 482
* Comments: 20
* Blade height [m]: 1.2
* Power [W]: 70
* Low speed start: No
* Generator: Axial flux alternator
* Theoretical efficiency [%]: 29
Oho tdc2 0jLA2u G4Dg.jpg
* Title: Building a Vertical Axis Wind Turbine. We no longer sell this R2-40 Rotating Assembly.
* Views: 1712601
* Likes: 12024
* This example was added just to show a more robust design than usual

4 Development and documentation

Plans and specifications of all parts and components

  • Analisis of functions & structures
Oho tdc2 011.jpg
Analysis of functions, assemblies and components
The conversion from wind energy to electricity occurs due to the shape of the blade profile, so one of the most important aspects of this project was to achieve an aerodynamic profile with the techniques and tools available for Appropriate Technologies
Additionally, the goal was set for the equipment to have a starting system at low wind speed, which was observed in commercial equipment but not much in DIY cases
  • Technical solutions
Development of technical solutions for assemblies and parts
A review of the different options adopted in the DIY machines was carried out to meet each design requirement, observing the following variants for some evaluated details:
* Evaluated detail: Blade Construction
  • Wooden ribs covered with flexible foil
  • Fiberglass covered ribs
  • Wire cut foam material
  • With PVC pipes
* Evaluated detail: Airfoil
  • NACA 0018
  • NACA 1418
  • NACA 0015
  • AH93W215
  • S-1046
  • NACA 0024
* Evaluated detail: Generator type
  • DC Motor
  • Axial flux alternator
  • Car alternator
* Evaluated detail: Self start method
  • Combined Savonius
  • Variable pitch
  • Magnus effect
* Evaluated detail: Mast Type
  • Truss tower
  • Tubular post
See related comments: Discussion
  • Technical documentation
Creation of plans, parts lists, assembly instructions
Once all the necessary information was available, the project plans were prepared
  • Peer-Reviews
Peer-Reviews by the community, team members, experts etc.
Among some revised and improved aspects of the project, prior to the publication of the plans, we can mention:
* Improvements in the presentation format of technical notes, they include illustrations on manufacturing
* Using a template with a grid for quick copying of the airfoil and manufacturing of the blades
* Use of metal straps to hold the Savonius internal blade (version 0.02 - part 1.18)
* Simplification in the H-shape of the turbine structure, without requiring tensioning trusses in it

5. Manufacturing, tests and improvements

To date, this project is on hold for manufacturing

  • Workshop
    Determination of the workshop for manufacturing:
This project is considered as belonging to the group of Appropriate Technologies, for which it has been developed with the intention of the greatest possible access to processes and materials by the developers, with a basic, moderately equipped workshop, however, it is necessary also have the following facilities:
* Tools and materials for working with fiberglass
* Tools for carving wood, in the case of blade moulds
* Adequate spaces, tools and equipment to carry out electrical work, in the case of generator connections and the associated electrical network
Although these conditions do not pose a greater difficulty during manufacturing, it is left to the developer's discretion to choose between carrying out this work or requesting the services of a third party to guarantee a professional work

The purchasing, prototype manufacturing, testing, and documentation updating sub-processes, will be developed once the manufacturing stage is completed

6. Certification DIN Spec 3105

  • Formal audit
Pdc certification-process-diag-page1.jpg
Verification of the completeness of the documents:
* Parts list
* Drawings of all parts and assemblies
* Assembly instructions
* Optional documents, technical notes
* These formal aspects have been verified, the project meets them satisfactorily
  • Assignment of reviewers
    Search and assignment of peer-reviewers with sufficient expertise:
  • Peer-reviews
    Realization of the peer reviews, technical clarification, improvements:
In the Parts list section, necessary comments and discussions have been made by the assigned reviewers and the developer
  • Certificate
    Issue of the certificate:
Oho tdc2 attestation Darrieus-Turbine-2m-combined.png

The project was reviewed by two reviewers from the OHO team. The review consisted of the following components:

* Completeness check: Checks if all required documents have been submitted.
* Review of the submitted documents: Checks if the information in the submitted documents is complete and correct.
- Bill of materials
- Are all parts and assemblies covered?
- Are all quantities correct?
- Are all required material specifications available?
- Are all specifications for purchased parts and standard parts complete?
* Technical drawings
- Are all the required views available?
- Are all required dimensional data available?
* Suggestions for improvement

Detail abot the review process: https://en.oho.wiki/wiki/Instructions_for_Reviewers

Permanent Link: https://en.oho.wiki/index.php?title=Darrieus_Turbine_-_2m_combined&oldid=45791


+ General Reviews General Reviews

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Parts list

Pos. Qty. Part Name Part code Part Type Specifications Review Status Show All Comments
A1 1 3D Views

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A2 1 3D Explosion Views

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B Parts list

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C Technical notes

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1.00 1 Blade assembly

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1.01 18 Rib Production Cedar or pine wood, 350*74*12mm

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1.02 3 Rib2 Production Cedar or pine wood, 500*500*500*12mm

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1.03 3 Fiber layer1 Production Fiberglass and polyester resin, optional polyurethane filling. thickness: 3-5 mm

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1.04 3 Fiber layer2 Production Fiberglass and polyester resin, optional polyurethane filler. thickness: 3-5 mm

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1.05 3 Fiber layer3 Production Fiberglass and polyester resin, optional polyurethane filler. thickness: 3-5 mm.

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1.06 6 Blade reinforcement1 Production Round tube 3/8", sch40 or similar, aluminum.

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1.07 2 Bearing Buy SKF 61808 2RZ bearing, 40*52*7mm, with double seal, double stuffing box HM4R and flanged housing

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1.08 3 Blade arm1 Production Round tube 1 1/4", sch40 or similar, Iron

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1.09 3 Blade support1 Production Plate 1 1/2"*4mm*117mm

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1.10 3 Blade bracket21 Production Plate 1 1/2"*4mm*190mm

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1.11 6 Blade bolt2 Standard Hexagonal bolt 3/8*2 1/2", UNC, grade5

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1.12 6 Blade nut2 Standard Hex nut 3/8", UNC, grade 5

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1.13 6 Blade washer2 Standard Flat washer for 3/8

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1.14 18 Blade bolt1 Standard Hexagonal bolt 1/4*4*1" UNC, grade 5

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1.15 18 Blade nut1 Standard Hex Nut, 1/4", UNC, Grade 5

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1.16 18 Washer washer washer1 Standard Flat washer for 1/4

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1.17 63 Blade reinforcement bolt1 Standard Drywall screw 1 1/2"#8

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1.18 9 Blade band Production Plate 1*1/8"*340mm

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2.00 1 Tower structure

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2.01 4 Main prop Production Angle 1*1"*3mm*2422mm

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2.02 4 Cross member1 Production Angle 1*1"*3mm*616mm

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2.03 4 Crossbeam2 Production Angle 1*1"*3mm*425mm

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2.04 4 Crossbeam3 Production Angle 1*1"*3mm*233mm

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2.05 4 Truss1 Production Round iron bar D3/8"*1100mm

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2.06 4 Truss2 Production Round iron bar D3/8"*1030mm

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2.07 4 Anchor eye Production Flat bar 1 1/2"* 4mm*60mm

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2.08 1 Central post Production Round iron pipe 1 1/4" sch40 (e 3.5mm)*2100mm, Cylindrical

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2.09 1 Post guide Production Round iron pipe 1 1/2", sch40 (e 3.7mm) or similar, l 500mm

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2.10 8 Post support Production Plate 1 1/2"*4mm*177mm

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2.11 1 Stator support Production Iron plate 450*450*5mm

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2.12 2 Post bolt Standard Hexagonal bolt 3/8*2 1/2" UNC, grade 5

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2.13 2 Post nut Standard Hexagonal nut 3/8" UNC, grade 5

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3.00 1 Alternator

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3.01 1 Stator Casting Production Pre-mixed polyester resin with accelerator

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3.02 9 Coil Production Enameled copper cable, D 1.7 mm, 73 turns (for 12V), total weight: 3 kg

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3.03 1 Connector1 Buy 20A three-pole connector

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3.04 2 Rotor casting Production Premixed polyester resin with accelerator

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3.05 24 Ferrite magnet Buy Ferrite magnet block, grade 3, pre magnetized, 30*46*10mm

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