1. Faculty of engineering, Sohar University, Sohar, Oman
2. Solar Energy Research Institute, Universiti Kebangsaan Malaysia, Bangi, Selangor, Malaysia
3. Engineering Department, American University of Iraq, Sulaimani, Kurdistan Region, Iraq
4. Energy and Renewable Energies Technology Research Center, University of Technology, Iraq
5. Faculty of Mechanical and Energy Engineering, SBU
6. College of Higher Studies, Arabian Gulf University, Bahrain