사무소 건물 적용 DSSC BIPV 창호의 환경 및 에너지성능 분석

Abstract

Purpose: This study aimed at analyzing the building indoor environment conditions and energy performance when DSSC BIPV windows are applied, and building a database to suggest the appropriate performance level of DSSC BIPV windows in future buildings. Method: The DesignBuilder, a building energy analysis program, was used to evaluate indoor illuminance, room temperature, cooling and heating energy, lighting energy, and power generation performance. Result: Simulation results demonstrate that the current characteristics of DSSC BIPVs exhibit an improved U-value but low visible light transmission (VLT) performance in comparison with low-emissivity double glazing windows. Thus, heating energy consumption was reduced, while as the electricity consumption for lighting was significantly increase. This increasement influenced the increase of the cooling energy consumption due to the higher indoor cooling load from lighting fixtures. To satisfy the 13% power generation efficiency suggested by the National Renewable Energy Laboratory, a VLT of 30% is required, which will produce energy savings of 4,861.44 kWh/year. For VLTs of >50%, energy saving is possible in combination with any generation efficiency.