1. Department of Mechanical Engineering, Faculty of Engineering, Universitas Sebelas Maret, Surakarta, Indonesia
2. Department of Mechanical and Intelligent Systems Engineering, The University of Electro-Communications, Tokyo, Japan
3. Department of Energy and Material Sciences, Faculty of Engineering Sciences, Kyushu University, Fukuoka, Japan
4. International Institute for Carbon-Neutral Energy Research, Kyushu University, Fukuoka, Japan