1. Process Systems Engineering, Graz University of Technology, Inffeldgasse 25/C, 8010 Graz, Austria
2. Ottronic Regeltechnik G.m.b.H., Ankerweg 1, 8753 Fohnsdorf, Austria
3. Chair of Technical Thermodynamics and Energy Efficient Material Treatment, Institute for Energy Process Engineering and Fuel Technology, Clausthal University of Technology, Agricolastraße 5, 38678 Clausthal-Zellerfeld, Germany