ELQEH - Eco-Logic Queer Energy Harvesting/ eco loxicas cuir xeradoras de enerxía eólica

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                                                         Pedagogies of the Wind and Stars. The social relations that we (were never meant to)      survive, also live in our bodies painfully, and Audre Lorde is not here to remind us of this lesson herself, except  in  as  much  that  she  is  present  in  the pedagogical wind. But wind is our teacher (74).                                                                             -Alexis Pauline Gumbs from the book Mapping Queer Space(s) of Praxis and Pedagogy  

Editors: Elizabeth McNeil, James E. Wermers, Joshua O. Lunn

We have the pleasure to communicate you that from 16 to 23 of October Pin Biotranslab, Casa do Río e The Foundry establishes a collaboration to run the event Eco (i) Logic Queer Energy harvesting. The project is possible thanks to the support of GOSH, an network for develop and disseminate projects based on Open Source hardware for Science.

Eco (i) Logic Queer Energy harvesting Italic text The event aims at addressing the lack of women, queer, trans and diversity in technological fields in general and hacking more specifically. But even more so, it aims at creating a community that critically assesses the hegemonic narratives around technologies, the modernity aspects of its underlining Western assumptions and its inherent capitalist inflections, among others. The main purpose of the event is to develop kits that focus on interacting with the natural environment on the field of energy.. the main objective lies on harvesting energy of the natural environment, through wind turbines. These power kits will be scalable and can be used both as pedagogical material and to set up site-specific power plants in different sites as well. There is a counter-infrastructural component to this work: one possible consequence would be to empower people to generate their own energy instead of relying on large and often extractive companies.

Introduction and values of the process

Here starts the documentation of the long process of the prototyping the Hugh Piggott The Piggott Turbine – Wind Empowerment model of an Open source wind turbine. We were changing a bit the goals of the event from developing small kits to going to build the real 2m size wind turbine to provide energy to the rural regional areas we were working on. In that specific event we were working at The Foundry a nice project and association that we have settled on the north part of Galicia into the Northwest of Spain.

During the event many things have been activated between the doers and the visitors; In general It was a wondering experience full of new things to study, learn, doing and understand together.

We chose this model because It was full of layers of interest on the levels of learning, understanding and making it, here some levels mixed up with layers:

first to all is one of the ones that is open source or at least has the option to access the full documentation.

really rich on the pedagogical level, we were really learning through the complete building of the generator itself, about many topics as :

  • electromagnetism
  • mathematics
  • geometry
  • electronics
  • AC-DC
  • welding
  • wood carving
  • sculpting and casting pieces

and much more that was reaching through the nice process of reading, learning and building together.

Glossary

  • AC-Alternating current as produced by the alternator.
  • All thread - USA word for 'threaded' or 'spun' rod or
  • studding
  • Brake switch - A switch used to short-circuit the wires from the alternator so that it stops.
  • Catalyst - A chemical used to make the polyester resin set solid. Catalyst reacts with 'accelerator' already present in the resin mix.
  • The heat of reaction sets the polyester.
  • Cavalier - A make of car. The cavalier in the UK is not the same as the Cavalier in the USA but both have useful wheel hubs.
  • DC - direct current with a positive and a negative side, as in battery circuits.
  • Diameter - The distance from one side of a circle to another. The width of a disk right across the middle.
  • Phase - The timing of the cyclical alternation of voltage in a circuit. Different phases will peak at different times.
  • Polyester - A type of resin used in fibreglass work. Also suitable for making castings.
  • Power - the rate of delivery of energy
  • Rectifier - A semiconductor device that turns AC into DC for charging the battery.
  • Root - The widest part of the blade near to the hub at the centre of the rotor.
  • Rotor - A rotating part. Magnet rotors are the steel diskscarrying the magnets past the stator. Rotor blades are the 'propeller'
  • driven by the wind and driving the magnet rotors.
  • Soldering - A method for making electrical connections between wires using a hot 'iron' and coating everything with molten solder.
  • Drag - A force exerted by the wind on an object. Drag is parallel to the wind direction at the object. (see Lift) Stator -
  • An assembly of coils embedded in a slab of resin to form part of the alternator. The magnets induce a voltage in the coils and we can
  • use this to charge a battery.
  • Drop - Used here to describe a certain measurement of the shape of a windmill blade. The 'drop' affects the angle of
  • the blade to the wind. Styrene monomer - A nasty smelling solvent in the polyester resin mix.
  • Flux - The 'stuff' of magnetism. Similar to 'current' in electricity. It can be visualised as 'lines' coming out of one pole and
  • returning to the other.
  • Furling - A protective action that reduces exposure to violent winds by facing the blades away from them.
  • Jig - A device used to hold the magnets in place before setting them in resin.
  • Leading edge - The edge of a blade that would strike an object placed in its path as the rotor spins.
  • Lift - A force exerted by the wind on an object. Lift is at right angles to the wind direction at the object. (see Drag)
  • Mould - A shaped container in which resin castings are formed. The mould can be discarded after the casting has set.
  • Multimeter - A versatile electrical test instrument, used to measure voltage, current and other parameters.
  • Neodymium - The name given to a type of permanent magnet containing neodymium, iron and boron. These magnets are very strong and
  • getting cheaper all the time.
  • Offset - An eccentric position, off centre.
  • Talcum powder- A cheap filler powder used to thicken the resin and slow its reaction (prevent it overheating).
  • Tail - A projecting vane mounted on a boom at the back ofthe windmill used to steer it into or out of the wind automatically.
  • Tap - a tool for making thread inside holes so you can fit a screw into the hole.
  • Thrust - The force of the wind pushing the machine backwards.
  • Tower - The mast supporting the windmill.
  • Trailing edge - The blade edge furthest from the leading edge. The trailing edge is sharpened, so as to release the passing
  • air without turbulence.
  • Wedges - Tapered pieces of wood used to build up the blade thickness and increase its angle to the wind near the root.
  • Workpiece - The piece of wood or metal being shaped in the workshop.
  • Yaw bearing - the swivel at the top of the tower on which the windmill is mounted. The yaw bearing allows the windmill to face the wind.

Materials

List of materials required for the propeller, refer to the chapters for details 
   . Scraps of plywood
   . Plank section minimum 95mm x 35mm, length 1m80. (red cedar or douglas or larch or spruce )
   . Plywood 9mm
   . Some screws of diameter 5mm, length 30mm.
List of materials required for  the generator, refer to the chapters for details 
   . Metal disc of thickness 8mm and diameter 140mm.
   . Rear wheel hub of golf, corsa, polo or Ibiza.
   . 25cm of threaded rods with diameter 12mm.
   . Pack of nuts of 12mm.
   . 30cm threaded rods of diameter 10mm, 4 nuts of 10mm.
   . Scraps of metal tube and angle.
   . 4 nails of diameter 6mm.
   . 1.5kg of enameled copper wire, diameter 1.4mm.
   . Electrical scotch.
   . Heat-shrink tubes
   . Plywood 9mm et 16mm.
   . Glass fiber cloth (approximately 300g/m²)
   . Polyester resin, associated catalyst
   . Talc.
   . Mould release wax
   . 24 neodymium magnets.
   . Steel disc of diameter 300mm, thickness 6mm.
   . Bolts 12mm.

List of materials required for the steel structure , refer to the chapters for details

   . Angle of 206mm (50x50x6mm).
   . Tube of outer diameter 42.2mm, length 100mm.
   . Tube of outer diameter 33.4mm, length 150mm.
   . Tube of outer diameter 42.2mm, length 130mm.
   . Iron plate 50 x 50 x 6mm.
   . Tube of outer diameter 33.4mm, length 700mm.
   . Angle 30 x 30 x 5, length 250mm.
   . 60 cm of threaded rods with diameter 12mm.

Process documented by steps

Because of the complexity involved on the realization of the full assembly of the wind turbine we were thinking to divide the documentation in 4 different sections.

Section 1, involves the construction of the devices that will help on the creation of the power generator.

  1.1 wiring coil device 
  1.2 mold to cast the rotor and the Stator of the motor 

Section 2, involves the construction of the alternator parts using the devices from the section 1.

  2.1 coil making (the Stator) using the wiring coil device from section 1 
  2.2 stator casting using the molds from section 1 
  2.3 magnet placements for casting the to layers of the rotor. 

Letś see in detail all the steps needed for the stator :

   Step  - Generator, stator: Preparation of the cradle.
   Step  - Generator, stator: Preparation threaded stator rods
   Step  - Generator, stator: Preparation of the coil.
   Step  - Generator, stator: Making of 6 coils.
   Step  - Generator, stator: "Star" mounting
   Step  - Generator, stator: Three-phase cable
   Step  - Generator, stator: Making the stator mould
   Step  - Generator, stator: Preparation of the molding.
   Step  - Generator, stator: Molding.

Section 3, involves the creation of the rotor part of the generator:

   Step  - Generator, rotor: Preparation of the metallic disk.
   Step  - Generator, rotor: Preparation of the bell hub.
   Step  - Generator, rotor: Preparation of the template.
   Step  - Generator, rotor: Gluing of magnets
   Step  - Generator, rotor: Preparation of the mold.
   Step  - Generator, rotor: PreStep 1 

Section 4, involves the craving of the blades and the welding of the base for the turbine generator.

  4.1 Making the blades 
   Step 1 - Propeller: The pattern
   Step 2 - Propeller: drawing and cutting of the blades.
   Step 3 - Propeller: Sculpture of the lower surface of the blades
   Step 4 - Propeller: Sculpture of the lower surface of the blades
   Step 5 - Propeller: Blade profile finalization
   Step 6 - Propeller: Construction of assembly supports
   Step 7 - Propeller: Assembly


   4.2 Welding the base to support.
  Step  - Structure, Nacelle
  Step  - Structure, Rudder
  Step  - Assembly, Generator
  Step  - The final assembly and the production test.
  Step  - Balancing of the blades.
  Step  - Lubrication of the wind turbine


Contents

   Description
   Summary
   Introduction
   Video overview
   


Galego

"Pedagoxías do vento e das estrelas. As relacións sociais ás que (nunca estabamos destinados a) sobrevivir, tamén vivimos nos nosos corpos dolorosamente, e Audre Lorde non está aquí para lembrarnos esta lección, salvo na medida en que está presente no vento pedagóxico. Pero o vento é o noso mestre (74). -Alexis Pauline Gumbs "

O principal obxectivo deste evento é prototipar un xerador eólico a pequena escala para camiñar xuntos cara á autosuficiencia neste campo. Temos o pracer de comunicarvos que do 16 ao 23 de outubro Biotranslab de Pin e The Foundry establecen unha colaboración para levar a cabo o evento Eco (i) Logic Queer Energy harvesting. O proxecto é posible grazas ao apoio de GOSH, unha rede para desenvolver e difundir proxectos baseados en hardware de código aberto para a ciencia.

EcoLoxicas Queer para a captación de enerxía eolica. O evento ten como obxectivo abordar a falta de mulleres, queer, trans e diversidade nos ámbitos tecnolóxicos en xeral e do hacking máis concretamente. Pero aínda máis, pretende crear unha comunidade que avalía criticamente as narrativas hexemónicas arredor das tecnoloxías, os aspectos de modernidade dos seus supostos occidentais subliñados e as súas inflexións capitalistas inherentes, entre outros. O obxectivo principal do evento é desenvolver kits que se centren na interacción co medio natural no ámbito da enerxía.. o obxectivo principal pasa pola captación de enerxía do medio natural, a través dos aeroxeradores. Estes kits de enerxía serán escalables e poderán utilizarse tanto como material pedagóxico como para instalar centrais eléctricas específicas do sitio en diferentes sitios tamén. Este traballo ten un compoñente contrainfraestrutural: unha posible consecuencia sería capacitar ás persoas para xerar a súa propia enerxía en lugar de depender de grandes empresas e moitas veces extractivas.


Participants :

Lau, Miranda Moss, Misfita, Yann Keller, Denis, Pin,


September 2022