During his academic career, Professor Khalil served as an editorial board member for Advances in Mechanical Engineering and the International Journal of Thermal and Environmental Engineering. He was a Fellow of the American Society of Mechanical Engineers (ASME); the American Institute of Aeronautics and Astronautics (AIAA); and the American Society of Heating, Refrigerating, and Air-Conditioning Engineers (ASHRAE). He was the Regional Director for ASHRAE in the Middle East and North Africa and served on the ASHRAE Board of Directors as Director-at-Large from 2016 to 2019. He served as a Convener for ISO/TC205 WG2 on Energy Efficiency and as a Convenor for ISO/TC163 WG4 on Thermal Performance and Energy Use in the Built Environment. He was an ASHRAE Distinguished Lecturer and an Authorized Instructor for ASME. He also served as an ABET program evaluator (PEV). He was a member of the AIAA Green Engineering Program Committee as well as the AIAA Thermophysics Technical Committee, the AIAA Terrestrial Energy Systems Technical Committee, and the AIAA Gas Turbine Engines Technical Committee.
The scientific contributions of Professor Khalil spanned many areas and have been recognized by many honors and awards. These include the Decor of Science and Arts of the First Order from former Egyptian President Anwar Sadat (1981), the National Award for Scientific Achievement in Engineering Sciences (1981), Member of L’Institut D’Egypte (2007), ASHRAE Presidential Award of Excellence (2009), ASHRAE Chapter Service Award (2009), ASME Westinghouse Gold Medal (2009), AIAA Energy Systems Award (2010), ASHRAE Regional Award of Merit (2010), AIAA Sustained Service Award (2011), ASHRAE Distinguished Service Award (2011), ASME James Harry Potter Gold Medal (2012), University of Wisconsin Milwaukee Distinguished Lecture Award (2013), ASME Egypt Achievement Award (2013), Syndicate of Egyptian Engineers Award of Excellence (2016), ASHRAE Exceptional Service Award (2017), and multiple Awards of Excellence from Cairo University.
It is difficult to find appropriate words to express our emotions at this wistful moment. The scientific community will remember Professor Khalil as a prolific and exceptional scientist, mentor, teacher, and a highly respected colleague. He will also be remembered for his exceptional character as a human being who cared about his family, friends, students, and professional colleagues. Figures 1 through 5 show some memorable pictures of Professor Khalil with different colleagues, students, and friends. He will be sorely missed by all of us.