Uni Flow Energy Extraction generator for extraction of flow energy from small rivers

units may be floated into place using buoyancy chambers and/or airbags buoyancy chambers are filled with sand or gravel ballast when each unit is installed river flow the water level rises in each entrance channel as the flow slows down the water level falls in each exit chamber three prefabricated Uniflow channel units placed side by side in a river © clf anderson diagram only not to scale units may be floated into place using buoyancy chambers and/or airbags each prefabricated unit rests on the riverbed and may be piled into place

Uniflow channel unit plan view side wall of exit channel side wall of entrance ramp exit flow entrance flow turbine runner duct turbine runner Uniflow channel unit plan view © clf anderson diagram only not to scale

Uniflow generator unit generator and thrust bearing are installed above the maximum river flood level supports are adjustable so as to allow accurate levelling of the power unit to accommodate the slope of the river bed dimensions and type of turbine runner vary according to water depth and flow rate flood water can spill over the top of the unit drive shaft guide tube trash screen river flow direction turbine runner note: inlet slope is exaggerated a venturi system may be used to apply a vacuum to the base to compact the river bed river bed level © clf anderson diagram only not to scale Uniflow generator unit

alternative river generator unit generator and thrust bearing are installed above the maximum river flood level prefabricated entrance channel spun concrete pipe waterfall profile spun concrete pipe exit chamber fixed to the river bed river bed level © clf anderson diagram only not to scale alternative river generator unit

a Deriaz turbine runner with the blades closed © clf anderson a Deriaz turbine runner with the blades closed Kaplan runners have a similar layout an Archimedian screw may be used on many sites