Publications Repository - Gdańsk University of Technology

This paper introduces the innovative modification of the Savonius wind turbine being able to significantly increase efficiency in comparison with the classic design. This innovative design is equipped with a stator directing the flow. The presence of the stator increases the active surface area and generates higher torques acting on a shaft. Additionally, it makes it possible to take better advantage of wind energy and compensate the effect of larger active surface area. The larger the stator angle the higher the efficiency. One of the biggest problem of the classic design, namely its relatively low efficiency, is overcome. The results of an experimental investigation, carried out in the closed return wind tunnel, are presented for various conditions and configurations. These include the most important characteristic such as the torque and power coefficient as a function of the tip speed ratio. Furthermore, a three dimensional numerical analysis of the transient phenomena occurring in the innovative turbine is investigated. Evaluation and comparison criteria are proposed in order to evaluate and compare various designs and solutions. This makes it possible to explain the increased efficiency of the innovative design.

Authors

• Katarzyna Kludzińska link open in new tab ,
• prof. dr hab. inż. Krzysztof Tesch link open in new tab ,
• Piotr Doerffer