Pelton and Francis turbine Comparison of impulse and reaction turbines Features - comparison of impulse and reaction turbines - constant speeds and torques can be adjusted in combination with HM 365 - part of the GUNT FEMLine Learning objectives/experiments - in combination with HM 365 and HM 365.32 -- comparison of impulse and reaction turbines -- determination of the mechanical and hydraulic power -- determination of the efficiency -- recording of characteristic curves -- influence of the nozzle cross-section of the Pelton turbine on the characteristics -- influence of the guide vane position of the Francis turbine on the characteristics Specification [1] comparison of a Pelton turbine as impulse turbine and a Francis turbine as reaction turbine [2] operation by use of the HM 365.32 Turbine supply unit [3] turbine load by use of the HM 365 Universal brake and drive unit [4] constant torques and speeds can be adjusted with HM 365 [5] transparent front panel in the turbines for observing the operating area [6] adjustable nozzle needle for setting different nozzle cross-sections (Pelton turbine) [7] adjustable guide vanes for setting different angles of incidence (Francis turbine) [8] pressure sensor at the Francis turbine for measuring the pressure at the turbine outlet [9] digital display for flow rate, pressure and temperature in HM 365.32 [10] braking torque and speed measured in HM 365 Technical data Transmission ratio between brake and turbine: 1,44:1 Pelton turbine - output: 1,5kW at 2750min-1 at 6,5bar - wheel diameter: 165mm - variable nozzle setting Francis turbine - output: 1kW at 3500min-1 and 4,2bar - rotor diameter: 80mm - variable guide vane setting Measuring ranges - pressure (outlet): 0...1,6bar LxWxH: 590x370x490mm (Pelton turbine) Weight: approx. 25kg LxWxH: 560x510x400mm (Francis turbine) Weight: approx. 50kg