Turbine inlet scrolls at the Ardnacrusha hydroelectric power plant in Ireland, c. 1928.
Fullsize image: https://diqn32j8nouaz.cloudfront.net...s_fullsize.jpg
Previously:
Roosevelt Dam gate valves - photo
Hoover Dam turbine - photo
Francis water turbine animation - GIF
Hydroelectric turbines from the 1920s - photo
Archimedes screw hydroelectric generator - GIF
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