1- A. G. Papatsounis
1- P. N. Botsaris
1- K. Lymperopoulos
2,3 – R. Rotas
2- Z. Kanellia
2,4 – P. Iliadis
2 – N. Nikolopoulos
1 Department of Production Engineering and Management, School of Engineering, Democritus University of Thrace – DUTH
2 Chemical Process and Energy Resources Institute, Centre for Research and Technology Hellas – CERTH
3 Dept. of Mechanical Engineering, Aristotle University of Thessaloniki – AUT
4 Dept. of Electrical and Computer Engineering, Democritus University of Thrace – DUTH
