Small Kaplan Versus Tubular and Francis Turbines

by Nils Romcke, Sorumsand Verksted A/S, Norw, Sorumsand Verksted A/S, Norw,

Document Type: Proceeding Paper

Part of: Waterpower '85


Mossefossen Power Plant is situated in the centre of the small town Moss in the southern part of Norway. Water flows from an existing dam through a 9 m**2, 175m long tunnel to the powerhouse near sea level. Intake structure, tunnel and powerhouse are new. The generating unit will be connected to the main grid during normal operation, but synchronous generator and complete frequency governor were specified to secure some local supply in case of emergency. This paper contributes to a discussion on alternative designs for the lower head range of small sized turbines through a brief study of the alternatives that were considered for the project.

Subject Headings: Power plants | Hydro power | Turbines | Tunnels | Hydraulic design | Comparative studies | Light rail transit | Water flow | Norway | Europe

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