Hydroturbine Venting for Discharge Oxygenation
Publication: Journal of Hydraulic Engineering
Volume 110, Issue 5
Abstract
Tests were conducted on two existing hydroturbines to evaluate turbine venting as a means of oxygenating discharged water. Additions of baffles to the turbine runner hub and to the draft tube wall were made to generate local suction for aspirating air. The effects of these baffles were evaluated in terms of flow rate of induced air, dissolved oxygen uptake and the effect on unit efficiency and output. The results indicated that baffles can be used to increase aspirated air and thus dissolved oxygen uptake, but that there is a related loss in turbine efficiency and capacity.
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References
1.
“Symposium on Reaeration Research,” Proceedings of the Hydraulics Division Specialty Conference, ASCE Gatlinburg, Tenn., Oct., 1975.
2.
Mortimer, C. H., “The Oxygen Content of Air‐Saturated Fresh Waters over Ranges of Temperature and Atmospheric Pressure of Limnological Interest,” International Association of Theoretical and Applied Limnology, Communications No. 22, Stuttgart, 1981.
3.
Raney, D. C., and Arnold, T. G., “Dissolved Oxygen Improvement by Hydroelectric Turbine Aspiration,” Journal of the Power Division, ASCE, May, 1973.
4.
Raney, D. C., “Experimental Measurements of Base Pressure Coefficients for Deflector Plates with Air Injected into the Wake Region,” The University of Alabama Bureau of Engineering, Report No. 156‐30, Sept., 1973.
5.
Raney, D. C., and Arnold, T. G., “Improvement of Dissolved Oxygen Levels in Hydroelectric Discharges,” Proceedings of the 10th Annual Meeting of the Society of Engineering Science, 1973.
Information & Authors
Information
Published In
Journal of Hydraulic Engineering
Volume 110 • Issue 5 • May 1984
Pages: 604 - 613
Copyright
Copyright © 1984 ASCE.
History
Published online: May 1, 1984
Published in print: May 1984
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