Characteristics of a powerful Francis turbine with adjustable guide vanes Features - characteristics of a powerful Francis turbine - optimal view of the operating area of the turbine - adjustable guide vanes for setting the output Learning objectives/experiments - investigation of the conversion of hydraulic into mechanical energy - determination of the mechanical power and hydraulic power of the turbine - determination of efficiency - recording of characteristic curves - investigation of the influence of the guide vane position - velocity triangles Specification [1] investigation of a Francis turbine [2] closed water circuit with pump, motor, flow control valve and tank with optional cooling [3] pump with variable speed via frequency converter [4] adjustment of flow rate via flow control valve [5] loading the turbine by use of the asynchronous machine as generator [6] rotor and guide vanes of the turbine completely visible [7] adjustable guide vanes for setting different angles of attack [8] non-contact speed measurement at the generator haft and force sensor for measuring the driving torque [9] digital display for temperature, flow rate and ressures (additional manometer within scope of supply), speed, torque and electrical power of generator [10] software for data acquisition via USB under Windows 10 Technical data Francis turbine - hydraulic power: 2,1kW at 1500min-1 - mechanical power: approx. 1,4kW at 1500min-1 - rotor, D: 120mm, 15 blades - 10 guide vanes, angle of attack adjustable: 0...23° Centrifugal pump, multistage - variable speed - power consumption: 5,5kW - max. flow rate 900L/min - pump head 42m Asynchronous machine as generator - output: 2,2kW at 1440min-1 Tank: 550L Measuring ranges - temperature:: 0…100°C - pressure (inlet): ±1bar (turbine) - pressure (outlet): 0...6bar (turbine) - flow rate: 0...1000L/min - torque: 0...20Nm - speed: 0...3000min-1 - power: 0...2200W (generator) 400V, 50Hz, 3 phases 400V, 60Hz, 3 phases, 230V, 60Hz, 3 phases UL/CSA optional LxWxH: 2350x1050x2050mm Weight: approx. 580kg
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