Impulse turbine Investigation of a compressed air driven axial impulse turbine Features - characteristic behaviour of an impulse turbine with air flow - optimal view of the operating area of a turbine - load applied by wear-free eddy current brake Learning objectives/experiments - design and function of an impulse turbine - determination of torque, power and efficiency - graphical representation of characteristic curves for torque, power and efficiency - investigation of the effect of nozzle pressure and number of nozzles Specification [1] investigation of a compressed air driven axial impulse turbine [2] transparent front panel for observing the operating area [3] distributor with 4 nozzles [4] selectable number of nozzles [5] applying a load to the turbine by using the wear-free eddy current brake [6] setting the primary pressure with the pressure reducing valve [7] valve and flow meter for setting the flow rate [8] solenoid valve as a safety device to prevent overspeed [9] determination of the torque on the turbine shaft using a force sensor [10] measurement of the turbine speed with an optical speed sensor [11] manometer for displaying pressures on the inlet and outlet side [12] digital display of speed, torque and temperature Technical data Axial impulse turbine - max. power: approx. 30W at 15000min-1 Rotor - Ø outer: 55mm - number of blades: 28 Distributor - 4 nozzles, number can be selected - entry and exit angle: 20° Measuring ranges - temperature: -20...1100°C - speed: 0...30000min-1 - torque: 0...10Ncm - flow rate: 2...16Nm3/h - pressure (inlet): 0...2,5bar - pressure (outlet): 0...0,1bar - primary pressure: 0...10bar 230V, 50Hz, 1 phase 230V, 60Hz, 1 phase; 120V, 60Hz, 1 phase UL/CSA optional LxWxH: 850x600x700mm Weight: approx. 48kg