publication Thesis 1998 A Computational Fluid Dynamics Study of Natural Ventilation in Arid Region Greenhouses Alhelal, I. M. . 1998 مناطق جافة، بيوت محمية، تهوية طبيعية، CFD Publication Work Type دكتوراه Publishing City Columbus School The Ohio State University more of publication Covering Materials Incorporating Radiation-Preventing Techniques to Meet Greenhouse Cooling Challenges in Arid Regions: A Review by med M. Abdel-Ghany, Ibrahim M. Al-Helal, Saeed M. Alzahrani, Abdullah A. Alsadon, Ilias M. Ali, and Rabeh M. Elleithy 2012 Effects of Ventilation Rate on the Environment of a Fan-pad Evaporatively Cooled, Shaded Greenhouse in Extreme Arid Climates. by Al-Helal, I. M. 2007 A study of fan-pad performance for a photovoltaic powered greenhouse in Saudi Arabian summer The performance of a fan-pad evaporative cooling system for a photovoltaic powered greenhouse was investigated under extreme summer conditions of Saudi Arabia. by Al-Helal, I. M., Al-Abbadi, N. and Al-Ibrahim 2004