Energy Performance Analysis of Green-Remodeling for Public Buildings under 500 m2

Old buildings over 20 years after completion account for 58.2% of all in Korea. Moreover, built 30 ago with weak insulation levels have a significant impact on energy consumption the building sector. Therefore, improving performance existing is critical. In addition, green remodeling old public currently being implemented accordance mandatory zero-energy construction policy. Korea, ECO2 based ISO 13790 and DIN V 18599 program used officially to evaluate efficiency ratings independence rates. However, accuracy controversial because cross-use cooling heating generated intermediate stage amount at specific point time cannot be analyzed. previous studies found that results static analysis showed higher than those dynamic program. this study, programs DesignBuilder were analyze compare primary (heating, cooling, hot water, lighting, ventilation) per year green-remodeled small building. Results indicated application elements reduced unit area most, especially energy. change grade through improved by two stages from 1 1++ case program, one 1+