Investigation of the Effects of Orientation and Window Usage on External Walls in Terms of Heating and Cooling Energy

This study investigatedeffective ways of minimizing the amount of energy usedfor heating and cooling caused by windows in the building envelope. The use of glass material in windows is discussed in terms of reducing heating and cooling energy consumption. The hourly total heating andcooling energy calculations were carriedout for the 1st,11th,and 21st days of each month using the previous 10-year period s mete- orological data for Elaz..g. Energy loads of windows were estimated using a computer program written in MATLAB. Energy requirements of different building facade examples caused by window glass were evaluated and the optimum facades determined among different alternatives. In conclusion, OR1/1 (square formed) buildings have the minimum heating and cooling requirements. Among 5 different glass alternatives, xenon filleddouble glass units require 33%-82% less heating andcooling energy than the others.