Effect of hydro turbine air venting on generating efficiency, dissolved oxygen uptake, and turbine vibrations

Technical Report · Thu Mar 01 04:00:00 EST 1984

OSTI ID:6907141

Harshbarger, E D; March, P A; Vigander, S

Low dissolved oxygen (DO) concentrations which occur seasonally in the turbine discharge from multipurpose, tributary reservoirs have stimulated the development of methods to increase the DO with a minimum of unwanted effects on the turbine set. A method is described in which flow deflectors mounted on the hub of a Francis runner are used to aspirate air through pipes in the headcover for all gate openings. Measurements were made of the amount of aspirated air, the efficiency of the oxygen transfer process, the change in generating efficiency, and the change in the vibratory behavior of the turbine set. For comparison, the data are compared to aeration results obtained by forceful injection of air under the headcover. The measuring techniques are described, the resulting data are presented, and the applicability of the reoxygenation method is discussed. 25 references, 5 figures, 3 tables.

• Research Organization: Tennessee Valley Authority, Norris (USA). Div. of Air and Water Resources
• OSTI ID: 6907141
• Report Number(s): TVA/PUB-84/28; ON: DE84901147
• Country of Publication: United States
• Language: English

Related Subjects

13 HYDRO ENERGY
130300 -- Hydro Energy-- Plant Design & Operation
130600* -- Hydro Energy-- Environmental Aspects
AERATION
DAMS
DATA
DESIGN
DISSOLVED GASES
ELEMENTS
EXPERIMENTAL DATA
FLUIDS
GASES
HYDRAULIC TURBINES
HYDROELECTRIC POWER PLANTS
INFORMATION
INJECTION
INTAKE
MACHINERY
MEASURING METHODS
NONMETALS
NUMERICAL DATA
OXYGEN
POWER PLANTS
SOLUTES
SURFACE WATERS
TURBINES
TURBOMACHINERY
WATER RESERVOIRS