Publication Date: 2004-Oct-28
The IP.com Prior Art Database
A steam or air turbine of traditional design and operated at a temperature of 600°C and higher requires rotor parts that are made of high cost ferritic/martensitic materials. A new turbine design intended for operation at higher temperatures comprises a diagonal front stage placed at a larger radius and a transition flow channel to the following stages having a smooth angular diversion. Preferably the diagonal front stage is placed at 45°, and as option adjustable guide vanes are used. The new design allows the use of traditional low cost rotor materials at higher temperatures of the working medium than in traditional designs. The new turbine has same length and achieves higher efficiency.