"MARIUSZ FILIPOWICZ is an Associate Professor in AGH University of Science and Technology, Faculty of Energy and Fuels and currently heads the Department of Sustainable Energy Development. Main areas of research are related with renevable energy technologies (mainly biomas, solar and wind), the effective use of energy and nuclear physics (nuclear fusion reactions in the range of ultra-low energy). He has authored and co-authored more than 250 scientific papers. He is also a leader of scientific projects in part of AGH, e.g.: ""BioORC: Construction of cogeneration system with small to medium size biomass boilers"" under KIC InnoEnergy support. MATEUSZ SZUBEL is an assistant profesor in AGH University of Science and Technology, Faculty of Energy and Fuels and member of research group focused on issues of renewable energy technologies in the Department of Sustainable Energy Development. He is a specialist in range of the research of the conditions for the sustainable energy development and engaged in the investigation of possibilities to use the computational fluid dynamics in optimization of the renewable energy technologies and increasing the energy efficiency of the energy devices. His research is focused on numerical modeling of biomass-fired heating devices. He is an author and co-author of more than ninety (90) scientific papers. Full list of publications of the author is available on: https://bpp.agh.edu.pl/autor/filipowicz-mariusz-03789 https://bpp.agh.edu.pl/autor/szubel-mateusz-06984"