1. Department of Mechanical, Production and Energy Engineering, School of Engineering, Moi University, Eldoret, Kenya
2. Faculty of Mechanical and Production Engineering, Arba-minch University, Arba Minch, Ethiopia
3. Africa Centre of Excellence in Phytochemicals, Textile and Renewable Energy (ACE II PTRE), Moi University, Eldoret, Kenya
4. Department of Chemical and Process Engineering, School of Engineering, Moi University, Eldoret, Kenya
5. Department of Biological Science, School of Sciences and Aerospace Studies, Moi University, Eldoret, Kenya
6. Department of Civil Engineering, Haramaya University, Harar, Ethiopia