1. Department of New Technologies & Alternative Energy Sources, HelleniQ Energy, 8A Chimarras Street, 15125 Maroussi, Greece
2. Department of Business Development and Technology, Aarhus University, Birk Centerpark 15, Innovatorium, 7400 Herning, Denmark
3. Fluid Mechanics and Turbomachinery Laboratory, Department of Mechanical Engineering, University of the Peloponnese, 1 Megalou Alexandrou Str., Koukouli, 26334 Patras, Greece