The Egyptian state establishes many schools in order to meet the needs of the numbers of students and achieve the quality of education,; The achievement of thermal comfort in the school classroom is most important criteria and requirements for achieving the objectives of basic education during the treatment of the elements of the building envelope of the school classrooms, The research paper shows the role of technological development and its impact on building materials and thus its effect on energy efficiency, which is one of the most important requirements for the environmental design of buildings and the most important criteria for sustainable architecture.The research deals with the problem of energy consumption in classroom buildings in Qena Governorate, as a result of the inefficiency of the glass used in the openings in the building envelope. Therefore, the main objective of this research is to improve the energy performance of school classrooms by using nanotechnology treated glass in the building envelope of school classrooms in Qena Governorate , An applied study was made using computer simulation with the Design Builder v 6.0 program, which is one of the internationally approved programs in the field of environmental analysis of buildings due to the accuracy of the results.The results indicate that the use of glass treated with nanotechnology double low-e 6 mm and 13 mm air to improve the energy efficiency of school classrooms in Qena governorate by rates of more than 30% over the base case of the (South-west) orientation.

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