Journal of Korean Institute of Architectural Sustainable Environment and Building Systems ISSN:1976-6483(Print) 2586-0666(Online) 한국건축친환경설비학회논문집

A national research project is being conducted to provide building energy information, which is now mainly limited to energy consumption data by fuel type, for each end use such as space heating, domestic hot water, etc. In order to achieve research objectives, energy consumption measurement systems by end use are being installed in sample buildings over a six-year period, which began in 2014. The measured data are being statistically processed for constructing an information system on energy use and CO₂ emission intensities by end use. This study aims to present statistical values on site energy use intensities by end use calculated using measurement data of 71 sample apartment units in Seoul for 1 year from May 2017 to April 2018, and to compare these data to the U.S. Residential Energy Consumption Survey (RECS) 2015 data. The average site EUIs are in the following order: space heating > electrical appliances > DHW > cooking > lighting > space cooling > air movement. The average site EUIs have the same order as those of the RECS 2015 data: space heating > electrical appliances, etc. > DHW > space cooling. The number of sample apartment units will continue to increase until 2019 (total number of samples 200) and intensity data by end use will be continuously updated through collection of measurement data.