국내외 기준 분석을 통한 창호 및 차양의 일사차단 기준 개선방안 도출

Windows are known to be responsible for considerable portion of heating and cooling energy use in modern buildings. Energy performance of windows are influenced by variety of design parameters such as WWR(window-to-wall ratio), SHGC, U-value, VT, shadings, daylighting control, etc. Therefore, many countries have tightened minimum requirements for window performance and design in building energy conservation codes and regulations. We analysed and compared window and shading criteria for reducing solar gain in Korean and foreign building energy conservation codes. Various foreign codes were prescribed in consideration of complicated and interrelated influences of window and shading design parameters with different climate conditions. Through the analysis, we suggested several considerations to improve the window and shading criteria for reducing solar gain in Korean building energy conservation code.