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Microhydro 2006 Environment Summit Sustainability in the High Country September 23, 2006

Microhydro 2006 Environment Summit Sustainability in the High Country September 23, 2006 Diane Price Brent Summerville. Hydro, It’s Really Solar Power. Most of that global hydro power is produced by large-scale hydroelectric plants. Today, we will be talking about micro hydro.

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Microhydro 2006 Environment Summit Sustainability in the High Country September 23, 2006

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  1. Microhydro 2006 Environment SummitSustainability in the High CountrySeptember 23, 2006 Diane Price Brent Summerville

  2. Hydro, It’s Really Solar Power

  3. Most of that global hydro power is produced by large-scale hydroelectric plants

  4. Today, we will be talking about microhydro • Small in scale • Minimum environmental impact • Site specific: you must have the resource • Affordable • Consistent • Produces continuously, 24/7

  5. These Turbines are turned by water. That turning motion drives a generator which produced electricity. With the high head situations we commonly see in the mountains, small pelton wheels and turgo wheels are commonly used.

  6. You need two things to make powerHead and Flow

  7. Measuring Head • Sight level (2 people) Eye level

  8. Measuring Head • Pipe with pressure gauge at the bottom (1 person) • 2.31 feet = 1 psi • This gauge reads 38 psi • 38 psi x 2.31 feet/psi = 88 ft of head

  9. 5 gallon bucket Most typical method for microhydro Small stream, little waterfall This may be tricky…

  10. 5 gallon bucket • If the measured flow using a 5 gallon bucket and a stop watch was 5 gallons in 1.5 seconds, how many GPM would this be?

  11. Larger Streams Float Method Weir

  12. Power Estimate Power (watts) = Net Head (ft) * Flow (GPM) 9-14 (use 10) 10 assumes a system efficiency of 53%

  13. Nozzles Flow through the pipe is controlled by the nozzle size

  14. Harris Hydro • The Harris system is an efficient, durable, battery charging pelton turbine with a PM generator. • Probably the most abundant micro-hydro unit in the U.S. • The multiple nozzle arrangement allows considerably more water to impact the runner, resulting in greater output at any head, and usable power at a much lower head. • 1 nozzle $1700 • 2 nozzle $1800 • 4 nozzle $1950 www.harrishydro.com

  15. Stream Engine Brushless, permanent magnet alternator which is adjustable Capable of outputs over 1 kilowatt Heads from 6 to 300 feet. Equipped with a rugged bronze turgo wheel, universal nozzles (adaptable to sizing from 1/8 to1 inch), and a digital multimeter which is used to measure output current. www.microhydropower.com 2 Nozzle Bronze $2395 4 Nozzle Bronze $2545 High Voltage Option $200 High Current Option $100 Energy Systems & Design

  16. Good forlong wire runs, 60' - 500' head, 10 - 600 gpm The units produce 3-Phase 120V, 240V, or 480V 'wild' (unregulated) AC, which is then stepped down to battery voltage. The heavy-duty brushless alternator is housed on the Harris Housing Uses the Harris bronze Pelton Wheel for flows up to 200 gpm and the bronze Turgo Runner for flows of 200 to 600 gpm. www.hipowerhydro.com HV 600 with 2 Nozzles $2500 HV 600 with 4 Nozzles $2600 HV 1200 with 4 Nozzles $3000 HV 1800 with 4 Nozzles $3500 HV 3600 with 4 Nozzles $5000 Turgo option $600 Hydro Induction Power

  17. Serious engineering Canyon 751 Canyon 2435 gpm KW gpm KW 50 139 1 1665 12 100 197 3 2415 36 200 277 8 3335 101 300 340 15 4084 185 Canyon Hydro 100 KW Canyon Crossflow Great Resource www.canyonhydro.com

  18. Make your own www.otherpower.com

  19. Mollies Branch Case Study • 100 ft of net head • Stream flow: 300 gpm • Design flow: 85 gpm • Penstock: 1200’ of 4” HDPE • Turbine: Harris Hydro 4-nozzle PM • Power: 850 W for now • Energy: .85 kW x 24 h/day x 30 day/mon = 612 kWh/mon • Cost = about $16,000

  20. ARISE & ASUSES Site Assessment

  21. Measuring Flow

  22. The 4” HDPE arrives in 50’ lengths

  23. Fusing the pipe with the ASU Wind & Hydro Class

  24. Fusion welder • Shave pipe ends • Heat with 500 degree iron • Press ends together to fuse • Makes a “double roll back bead” as demonstrated by Liz

  25. The penstock gradually drops 100 feet along the 1200 feet of pipe. It is supported along the bank with steel stakes and aircraft cable

  26. This log house is moved into place to house the turbine

  27. The wire run and Balance of System is roughed in

  28. A battery box is built to contain the eight Trojan L16 batteries (48V)

  29. A silt trap/intake filter is built from a 55 gallon plastic drum

  30. The penstock is connected to the turbine house

  31. A stand is constructed for the turbine. A union and hinge allows the turbine to be tilted back for servicing. Screw-type gate valves insures slow operation

  32. The water passes through the floor and returns to the creek

  33. Water is diverted from the creek to the silt trap

  34. A second silt trap barrel is added to improve performance

  35. The battery bank and inverter are wired. The electrician installs a subpanel for the hydro loads.

  36. The log house does a nice job of reducing the sound level (sounds like a sewing machine)

  37. The Mollies Branch microhydro project serves as an excellent demonstration site for regional farmers and landowners Questions?

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