Moose River Air Chamber Design and Performance

by Edward H. Stewart, III, Harza Engineering Co, United States,
James E. Borg, Harza Engineering Co, United States,

Document Type: Proceeding Paper

Part of: Waterpower '89


The Moose River Hydroelectric Project is a 12.5 MW development located in upstate New York. It employs an underground air chamber to protect the unit and power tunnel from pressure surges resulting from turbine gate movements during power load changes and to improve the operating stability of the Kaplan unit. This paper describes the design development of this unprecedented application of the air chamber to a U.S. hydroelectric project. The development of the hydraulic design criteria and the resulting air chamber design and tunnel design pressures using Harza's hydraulic transient computer model are also discussed. Finally, field studies were performed during the commissioning of the unit in December, 1987 to verify the hydraulic design and performance of the air chamber.

Subject Headings: Hydraulic models | Rivers and streams | Hydro power | Tunnels | Pressure vessels | Hydraulic design | Hydraulic pressure | Hydraulic transients | New York | United States

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