| Title |
Assessment of EPI Method Based on the Measured Heating and Cooling EUI Data |
| Authors |
문지예(Mun, Jeeye) ; 유영서(Yoo, Yeong-Seo) ; 김덕우(Kim, Deuk-Woo) ; 박철수(Park, Cheol-Soo) |
| DOI |
https://doi.org/10.5659/JAIK.2023.39.7.199 |
| Keywords |
Energy Performance Index; Building energy performance assessment; Building energy code; Building energy database |
| Abstract |
In South Korea, Energy Performance Index (EPI) approach has been used as a building energy standard for new buildings. It quantifies the
EPI score using two different weights based on selected design variables according to building usage, gross floor area, and region. However,
it has been well acknowledged that this prescriptive approach does not sufficiently account for the nonlinear interwoven relationship among
the design variables. With this in mind, the authors collected actual monthly energy data from 102,400 existing non-residential buildings in
South Korea and investigated the correlation between the obtained EPI scores and the measured EUIs as well as between the design variables
(U-values of the building envelope) and the measured EUIs. It is found that the current EPI rating method does not always explain the
energy performance of existing buildings. |