1. Solar Energy Research Institute, Universiti Kebangsaan Malaysia, Bangi Selangor Malaysia
2. Aeronautical Technical Engineering Department, College of Technical Engineering, Al-Farahidi University, Baghdad, Iraq
3. Air Conditioning and Refrigeration Department, Al-Mustaqbal University College, Al Hoillah, Iraq
4. Higher Institute for Science and Technology, Alkhoms, Libya
5. College of Electrical and Electronics Technology, Benghazi, Libya