1. AGH University of Science and Technology Faculty of Energy and Fuels Al. Mickiewicza 30 Krakow 30–059 Poland
2. National University of Singapore Department of Mechanical Engineering 21 Lower Kent Ridge Rd Singapore 117575 Singapore
3. Mineral and Energy Economy Research Institute Polish Academy of Science Wybickiego 7 Krakow 31261 Poland
4. National University of Singapore Suzhou Research Institute Suzhou 215123 China
5. National University of Singapore Chongqing Research Institute Chongqing 401123 China