Technik und Optimierung von Turbinen: Instandsetzung von zwei historischen Kaplan-Turbinen in der Papierfabrik Sappi.

The article informs on the restoration of two turbines at the hydroelectric power station Kaplan turbines at the Sappi paper mill in Gratkorn, Austria by Geppert GmbH. It mentions that optimizations were also implemented on the generators, and the result is an increase in performance in the upper single-digit percentage range and a significantly improved environmental compatibility of the system.