Dr. Obida Zeitoun is a professor in the Mechanical Engineering Department at King Saud University. He received his Ph.D. degree from McMaster University in 1995 in boiling and condensation and his M.Sc. and B.Sc. from Alexandria University. He has published many papers on boiling, condensation, heat transfer, membrane humidification, nanofluids, desalination, and energy. He has obtained four patents in desalination and solar energy and he has one patent application in two-stage gas turbine inlet cooling. He has supervised many Master's theses in two-phase flow, ventilation, heat transfer, and desalination.