1. Research Assistant, Centre for Research and Technology Hellas/Chemical Process and Energy Resources Institute, 4th km N.R. Ptolemais-Mpodosakeio, GR-50200 Ptolemais, Greece; Ph.D. Candidate, School of Mechanical Engineering, Laboratory of Steam Boilers and Thermal Plants, National Technical Univ. of Athens, 9 Heroon Polytechniou St., Zografou Campus, 15780 Athens, Greece (corresponding author).
2. Associate Professor, Faculty of Technologies and Systems, Na Loko 2, SI-8000 Novo mesto, Slovenia; Director, Simtec, Sticna 113, SI-1295 Ivancna Gorica, Slovenia.
3. Research Associate, Centre for Research and Technology Hellas/Chemical Process and Energy Resources Institute, 4th km N.R. Ptolemais-Mpodosakeio, GR-50200 Ptolemais, Greece.
4. Senior Scientific Officer, General Secretariat for Research and Technology (GSRT), Mesogeion Ave. 14—18, GR 11527 Athens, Greece.
5. Technical Support and Systems Engineer, Simtec Software and Services, 2, Paleon Patron Germanou St., GR 54622 Thessaloniki, Greece.
6. Senior Researcher, Centre for Research and Technology Hellas/Chemical Process and Energy Resources Institute, 4th km N.R. Ptolemais-Mpodosakeio, GR-50200 Ptolemais, Greece.
7. Professor and Vice-President, Centre for Research and Technology Hellas/Chemical Process and Energy Resources Institute, 4th km N.R. Ptolemais-Mpodosakeio, GR-50200 Ptolemais, Greece; Professor, School of Mechanical Engineering, Laboratory of Steam Boilers and Thermal Plants, National Technical Univ. of Athens, 9 Heroon Polytechniou St., Zografou Campus, 15780 Athens, Greece.