1. Department of Mechanical Engineering, Materials and Mechanical Engineering, University of Oulu, Oulu, Finland
2. School of Engineering Science, Lappeenranta-Lahti University of Technology LUT, Lappeenranta, Finland
3. School of Engineering Science, Lappeenranta-Lahti University of Technology LUT, Lahti, Finland
4. Department of Mechanical Engineering, School of Energy Systems, Lappeenranta-Lahti University of Technology LUT, Lappeenranta, Finland
5. VTT Technical Research Centre of Finland, Espoo, Finland