Pipe Turbine


The wastewater flow various applications in municipalities and industry harnesses the potential for energy to be captured, however, this is very rarely the case. As a mechanism to recover some of this energy, the pipe turbine has been developed in conjunction with the University of Kassel and the Fraunhofer IWES. The turbine is able to generate electricity economically, for flows above 50L/s and differential pressures above 0.2 bar.


The turbine is flanged to the piping, with a piping bypass ensuring flow rates exceeding the intake capacity bypass the turbine. The vacuum encapsulation of the generator and rotor magnet result in minimal maintenance when operated fully inside the water stream. The frequency converter captures hydro electricity from the flow within the pipe, and can be re-used on site, or fed back into the public power grid.

  • The fluid-dynamic turbine was designed in the sector for flow machine at the University of Kassel.
  • The production of the test rig and the prototypes as well as turbine and generator series were carried out by Krämer Energietechnik GmbH.


  • Pipe turbine – stainless steel AISI 316
  • Intake and outtake flange
  • Maintenance-free with epoxy resin cast permanent magnet generator
  • Ready to connect, incl. fusing, protective circuitry and inverters
  • Inspection flap for servicing the guide blades