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Eelectric Energy Harvesting: Converting Fluid Flow into Electricity

Discover the innovative program harnessing fluid energy in remote areas, converted to electricity through vorticity and mechanical waves. Explore the Piezoelectric materials, design modifications, and testing methods contributing to this cutting-edge project. Join us on this technological journey towards sustainable power generation.

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Eelectric Energy Harvesting: Converting Fluid Flow into Electricity

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  1. EelectricEnergy Harvesting from Laminar Fluid Flow Don Jenket Peter Stone Kathy Li George Waksman

  2. Introduction • There is often a need for electrical energy where power lines cannot go • Fluid flow is a persistent energy source even in the most remote locations • We seek to fulfill the need for electricity in remote locations by creating a portable device to convert the mechanical energy of fluid flow into electrical energy Eelectric

  3. Energy HarvestingEel Program • Creates vorticity from laminar flow • Vortices create waves in the tail of the device • Mechanical waves in the tail are converted to electrical energy http://www.darpa.mil/dso/trans/energy/pa_opt.html Eelectric

  4. Project Materials • Piezoelectric Polymer • Flow/Wave Tank • Electrical Circuitry • Water Barrier • Electronic Component Housing Eelectric

  5. Piezoelectricity • A property exhibited by certain materials that serves to couple mechanical strain and electric field • The result of retained electrical poling within a material • Can be used to interconvert mechanical and electrical energy Eelectric

  6. Choice of Piezoelectric Material http://web.media.mit.edu/~testarne/TR328/node7.html Eelectric

  7. Design Modifications • Size & shape of barrier • Material for Barrier • Electrodes • Vortex deflectors • Size & shape of tail • Possible layering of piezoelectrics Eelectric

  8. Risks & Uncertainties • Obtaining sufficient power • What is the minimum water velocity needed to generate waves within a given sample? • Sample durability • Fatigue failure • Environmental degradation Eelectric

  9. Testing and Simulation • Dielectric Constant • Young’s Modulus & Elasticity • Fatigue Testing • DSC for Glass Transition Temperature • Contact Angle Measurements • Simulate turbulent water environment Eelectric

  10. Project Goal • To produce between 0.5 W and 1 W of power in gently flowing water • Enough Power to light a LED • Gently flowing velocity ~ 2 m/s • Secondary Goal: Ability of generate power over a range of fluid velocities Eelectric

  11. Project Timeline Eelectric

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