Investigating the effect of replacing a double glass window with snigle window in an office building in the Semnan climate with Designbuilder software

The main cause of the energy dissipation in buildings in the country, in addition to design style of employment in the town of Bad materials in different parts of the building. It can be simple solutions to the implementation of some of the loss of a significant amount of renewable energy. In this study , optimize energy consumption in an administrative building in Semnan province climate in a bid to replace the window glass - with the designated low dispatch in foreign wall instead of single - walled window with the situation by simulator design builder software was investigated. Results of energy - saving by 12 percent annually in the coolant load, 2 percent in heating load and 11 percent of the total sample building in loads.