Streamlined HUB baffles for aeration at Norris Dam
Technical Report
·
OSTI ID:6934974
Streamlined hub baffles were installed and tested as aeration devices on both hydro turbines at Norris Dam. The results indicated that the baffles can induce significant aeration with only a small effect on unit operation. At the most efficient wicket gate opening, the airflow/waterflow ratio was about 2.2 to 3.2% which produced dissolved oxygen increases in the tailrace on the order of 2.5 to 3.0 mg/L when the incoming dissolved oxygen concentration was 1 mg/L or less. The baffles with aeration reduced unit efficiency less than 0.5% and reduced unit capacity less than 1 MW. For the final design, the baffles were bolted on and could be installed or removed in one eight-hour period or less.
- Research Organization:
- Tennessee Valley Authority, Knoxville (USA). Div. of Air and Water Resources
- OSTI ID:
- 6934974
- Report Number(s):
- TVA/PUB-84/66; ON: DE84901758
- Country of Publication:
- United States
- Language:
- English
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