Hydro Power Lamella Turbine

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The principle of the Lamella Turbine

  • The Lamella Turbine belongs to the family of the Understhot Water Wheels. This means that the water, accelerated by an
    elevation difference, is retarded by the Lamella Turbine. By this,
    kinetic energy is utilized.
  • Substituting the shovels of conventional water wheels, individually shaped lamellas or
    bundles of lamellas are stably situated circumferential, so that the force of the individual water flow
    brought by the river can be highly efficiently processed and transformed into rotation.
  • The applied bundles of lamellas are
    optimized for the particular water flow conditions. By this it can be obtained that the water can be held
    at the circumference of the turbine, where the “brake force” develops the
    maximum torque, which is transmitted to the generator.

The “little difference” between conventional technologies and the Lamella Turbine

  • The Lamella Turbine
    does not have closed chambers like conventional water wheels. Thus, the water inflow is not obstructed by
    air inclusions in the chambers, and reverse, the backflow of the air does not restrict the outflow of the water.
    When the water enters the lamella chambers, the air can vent out through the gaps between the lamellas. This throttling
    gaps, individually designed according to the specific situation, hold the water at the wheels circumference and keeps
    it from flowing inside. The
    inner area of the turbine thus is
    definitely free of water, which gives a significant difference to any other technology.
  • Sketching the Lamella Turbine as a rotating cylinder, the water enters at the outer cylindrical surface and, after transmitting
    the energy to the turbine, is led out at the same surface. As this causes permanent flushing of the inlet surface
    during operation, the Lamella Turbine
    cannot plug or collect silt, which would cause the need of back-flushing.
  • Unlike to other turbine technologies, the Lamella Turbine cannot overspeed. The characteristic
    idle speed is a function of the head of the water inflow, and cannot be exceeded. This makes it easy to
    define all operation conditions and to care for a secure and long lasting design.
  • Our developing progress at
    our water test channel, together with
    computer simulation and the
    experience of the operation of the Lamella Turbine, assure to gain the maximum energy at each individual
    location.
  • The inlet gate not only controls the power of the turbine, but also regulates the headwater level. This enables
    precise control of the inflow to the fish migration facility as well as the water management in the head
    water area (level for intake and outflow, ground water availability, etc.). At that, the performance of the Lamella
    Turbine power plant can be optimized.
  • To allocate the full cross section of the river bed to discharge flood water, concepts were designed to swing or lift
    the Lamella Turbine power plant totally out of the water flow profile. This offers the unique advantage to keep
    flood water security at such sites where the installation of a power plant only is possible directly in
    the river bed.

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PWL Hydropower Turbines
PWL Lamella and Pipe Turbines
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