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Model Tests for the Evaluation of Auto-Venting Hydroturbines

by Patrick A. March, TVA Engineering Lab, Norris, United States,
Joseph Cybularz, TVA Engineering Lab, Norris, United States,
Billy G. Ragsdale, TVA Engineering Lab, Norris, United States,



Document Type: Proceeding Paper

Part of: Hydraulic Engineering

Abstract:

The most significant environmental problem for many hydroelectric facilities is the water quality of turbine discharges. The primary water quality problem is often low dissolved oxygen levels which occur seasonally. Relicensing or rehabilitation of a hydroelectric facility offers an opportunity to address environmental and industrial development concerns over dissolved oxygen levels and other water quality regulations which affect hydropower releases. The auto-venting turbine (AVT) is a hydroturbine designed to aspirate significant quantities of air with minimal impact on operating efficiency. The AVT represents a promising technology for improving the quality of hydropower releases in a cost-effective manner. This paper describes model studies in progress by the Tennessee Valley Authority (TVA) and Voith Hydro for the development of AVT technology.

Subject Headings: Hydro power | Water quality | Turbines | Dissolved oxygen | Water pollution | Power plants | Hydrologic models | Tennessee | United States

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