The challenge

Turbines, such as steam and gas turbines as well as turbo-jet-engines comprise a multitude of guide-wheels and running-wheels. The guide-wheels are rigidly connected to the casing of the turbine, while the running-wheels are connected to the shaft of the turbine. Between the inlet and the outlet of the casing pressure and velocity of a working fluid decreases while a torque is transmitted from the blade-wheels to the shaft. How can the torque be increased to improve the turbine's overall effectiveness?

The invention

The RES-Cascaded Turbine introduces one or several ring-shaped airfoils into the radial fan of a running-wheel. Within the turbine, the incoming flow provokes uplift at a ring-shaped airfoil of the running-wheel. From the uplift a tangential impulse and a suction-force is derived, causing torque on the shaft and suction at the inlet-opening of the turbine's casing.

The advantages

  • Increasing the efficiency of a turbine by at least 25%
  • Optimal running conditions of a steam turbine at lower gas pressure
  • Improved stability for the guide wheel subject to bending, shear and torsion forces
  • Improved stability for the running wheel subject to bending, shear and torsion forces

The applications

  • Steam and gas turbines
  • Thermo dynamical turbo-jet-engines
  • Electrical turbo-jet-engines
  • Cooling turbines