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53:071 Hydraulics and Hydrology Project #1 Pelton Turbine

53:071 Hydraulics and Hydrology Project #1 Pelton Turbine. Allen Bradley, Loren Wehmeyer, Li-Chuan Chen, and Marian Muste. Problem Statement. A children’s museum in Colorado has purchased a small Pelton turbine for its new display on renewable energy. Problem Statement.

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53:071 Hydraulics and Hydrology Project #1 Pelton Turbine

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  1. 53:071 Hydraulics and HydrologyProject #1Pelton Turbine Allen Bradley, Loren Wehmeyer, Li-Chuan Chen, and Marian Muste

  2. Problem Statement • A children’s museum in Colorado has purchased a small Pelton turbine for its new display on renewable energy.

  3. Problem Statement • The museum wishes to operate the turbine (with available flows) and sell the power on the open market. • You have been hired as a consultant to the museum.

  4. Project Objective • Your job is to determine energy (kWh) that can be generated from the laboratory-scale Pelton turbine, and the revenue it can generate ($/year) for the museum.

  5. Site Information • The effective head for operations at the site is about 120 ft • Variations in the forebay elevation are assumed to be minor

  6. Operational Information • The museum will operate the turbine 7 days a week (9 am to 4 pm). • The museum has secured water rights to divert flows from the South Platte River. The allotted diversion depends on the average monthly flow rate in the river.

  7. Laboratory Component • Determine the energy conversion efficiency of the laboratory-scale Pelton turbine for the proposed operating conditions (Havailable, Q)

  8. Engineering Analysis Components • Compute the energy produced (kWh/yr) if operated as planned. • Estimate the revenue that can be generated if the energy is sold on the open market ($/year). • Prepare a one-page flyer on the exhibit (for distribution to museum visitors).

  9. Principle

  10. Principle

  11. Laboratory Objective • To determine energy conversion efficiency (h) for the laboratory-scale Pelton turbine for three operational discharges (Q)

  12. Laboratory Apparatus

  13. Laboratory Procedures • TA sets the discharge and initial measuring speed with the brake off • Tighten the friction hand-wheel and record the torque and rotational speed • Repeat Step 2 with ∆N ≈ 50-100 rpm until the rotational speed reaches about 500 rpm • Measure the head on the weir (H1) and record the reference point (H0) • TA adjusts to a lower discharge and initial rotational speed • Repeat Steps 1 to 5

  14. Data Sheet

  15. Laboratory Analysis • Determine the discharge using Q=2.49(H1-H0)2.48. • Determine the efficiency of the turbine. • Plot the rotational speed vs. the efficiency of the turbine. • Show results for the three different discharges.

  16. Sample Result

  17. Project Report • Provide the client (the museum director) with a concise report that answers the project objectives

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