1. Centre for Energy Sciences, University of Malaya, Kuala Lumpur, Malaysia;
2. Department of Mechanical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur, Malaysia;
3. Department of Mechanical Engineering, Faculty of Engineering, International Islamic University Malaysia, Kuala Lumpur, Malaysia;
4. Department of Mechanical Engineering, University College of Engineering and Technology, Bahauddin Zakariya University, Multan, Pakistan