A delegation from the center of clean energy and the Office of the United Nations Industrial Development Organization in Cairo has paid a visit to Assiut University to follow up the project "Site Measurements and Assessment of the Performance of the Solar-Operated Units for Absorption Conditioning  Designed for  Residential Homes Compared to Conventional Units;”  a project implemented by Assiut University in collaboration with  the German Government and funded by the Foundation of Science and technological development. Dr. Ahmed Hamza Hoseini, Professor of Mechanical Engineering, Faculty of Engineering, Assiut University, Director of the project indicated that the project is a practical model for the use of solar energy in its thermal and cooling conditions to operate conditioning units in buildings. He added that several stages of the project related to the university cadres including design preparations, purchasing, implementation, and continued operation of the system, have been completed and at work as of 2009 up till the present time. These stages have been designed to operate in current capacity to be used at households in modern communal areas nationwide during hot and cold seasons.   Prof. Huseini  maintained that the success of the experiment led the Clean Energy Center and UNIDO office in Cairo to send a delegation of experts including Dr Ali Abu-Senna, director of the Center for cleanest technology  production, Dr. Shaahinaz Fouad, member of UNIDO Office in Cairo, Dr. Arnulf Knorr, Expert of Energy Usage Efficiency, Arab German Chamber,  Engineer Mina Nabil, First Specialist in energy-saving, and Engineer Ahmed Aatef, Specialist energy-saving to check the system and work upon building similar designs for both tourist and industrial sectors, in addition to looking for a means to generalize this system all over the country as long as this system reflects a good impact on environment preservation from gas emissions causing thermal retention with 90% lower than in traditional cooling systems.