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Small-Scale Hydropower Optimization

Small-Scale Hydropower Optimization. ME/EE Senior Design Project 2004/2005 Customer: John Law Mentors: Ralph Budwig (ME), Brian Johnson (EE). Phillip Arpke Kelly Jobes Jamin Juhasz Karl Krohmer Jill Nieborsky. Problem Definition.

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Small-Scale Hydropower Optimization

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  1. Small-Scale Hydropower Optimization ME/EE Senior Design Project 2004/2005 Customer: John Law Mentors: Ralph Budwig (ME), Brian Johnson (EE) Phillip Arpke Kelly Jobes Jamin Juhasz Karl Krohmer Jill Nieborsky

  2. Problem Definition • Optimize Small-scale Hydropower System For Residential Heating • The Generator Is Capable Of Providing 3.7 kW Power • Last Spring During Maximum Flow, The Generator Provided Only 1 kW Of Power

  3. Constraints • Site Vs. Lab Conditions • Site: 9 cfs and 40 ft/s • Lab: 1 cfs and 16 ft/s • Inherited Features • Three-phase Generator Sunk Cost • 12-inch Penstock Pipe To 6-inch Round • On/Off Operation With Maximum Flow

  4. Project Milestones • Lab Tests Of Initial System • RPM • Static Torque • Power Output • System Design • Hydro Lab • Randall Creek • Performance Verification • Lab • Field

  5. Cross-flow Turbine Background • Banki Turbine • Top Water Entry • Falling Action • h=80%

  6. New Configuration Design Improvements • Increased Power Output • Nozzle Redesign • Reduced Water Drag In “Hot Spot” • Viewing Window Old Configuration

  7. Nozzle Design (Lab) • Design Based On Fluid Velocity (16 ft/s) • 15.75 in2 Cross-sectional Area • Hydraulic Area Constant From Round To Square

  8. Nozzle Design (Field) • Design Based On Flow Rate (9.63 ft3/s) • 31.875 in2 Cross-sectional Area • Hydraulic Area Constant From Round To Square

  9. Housing Design • Eliminated Water Drag In “Hot Spot” • Plexiglas Top For Viewing Flow Pattern

  10. Three Components Resistive Heating Load (12 Ω) Capacitor Bank (135 µF) Induction Generator Electrical Schematic

  11. Manufacturing Welding Test Nozzle Installing the Runner Bridgeport CNC Machine Fitting Circular Flange to Lab Nozzle

  12. Testing • Measured Generator and Turbine RPMWith No-load, Shunt Capacitors Only, and 12 Ω Load With Shunt Capacitance • Measured Power Output For Three Cases • Measured Static Torque Water Supply Electrical Box Generator Turbine

  13. Laboratory Results

  14. Field Performance Diversion Setup Diversion Canal Installed Turbine

  15. Questions?

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