1. Opole University of Technology,Faculty of Mechanical Engineering,Department of Thermal Engineering and Industrial Facilities,Opole,Poland
2. VSB - Technical University of Ostrava,Engineering Faculty of Electrical, Engineering and Computer Science,Department of Electrical Power,Ostrava-Poruba,Czech Republic
3. Institute of Environmental Engineering, VSB - Technical University of Ostrava,Faculty of Mining and Geology,Ostrava-Poruba,Czech Republic