| 요약2 |
In case of newly constructed office buildings, the construction types of their vertical envelope are almost curtain-wall system or high WWR(Window to Wall Ratio). These kinds of buildings have problems with energy efficiency. However it is estimated that the influence of the window area on energy is changed according to the building size, preferably, WFR(Window to Floor Ratio) is correlated with building energy. Therefore, EnergyPlus is used for a building energy simulation in this study. The results of the simulations show a building energy is relative to WWR, but there is a limitation to use for the index because of the building size. However, building energy is mostly relative to WFR, the correlation of this can be expressed a linear equation on condition of WWR≥0.1. Therefore, developing synthetic index according to WFR is acutely needed. And, in case of the solar gains according to the WWR, the correlation can be expressed a linear equation, the more WWR become the more solar energy gains. If the synthetic index is developed through analysis of window performances(U-factor, SHGC, VLT), the index should be used for a design of the low energy buildings. |