ZEMCH 2019 International Conference Proceedings April.2020 | Page 156
Eb
Total
23.4
48.3
22.3
48.3
19.6
48.3
(‐)19%
0%
(‐)14%
0%
4. Discussion and conclusion
The results of Eh, Ec, and Eb convey richer information compared to the TEUI. They are correlated
to heating, cooling, and the other usage(hot water supply, lighting, ventilation(fan), appliances, indoor
transportation and water supply). They are helpful for identifying opportunities and prioritizing
potential actions for more detailed analyses and full‐scale audits. They are easy to calculate by the
proposed method using data from monthly utility bills. The results of this study show that a simple
rule‐based disaggregation can guess the three quantities, not precisely accurately, but sufficiently and
practically.
The preliminary results indicated that the accuracy of disaggregating each energy sources
respectively was adequate enough for small‐ and medium buildings to guess Eh, Ec, and Eb. Percentage
difference (Diff2) for the heating, cooling, and base load energy were in the ranges of 11‐23%, 6‐8%, and
14‐19%, respectively. Furthermore, self‐diagnosis can be easily performed by comparing the estimated
cooling‐related, heating‐related, and baseload energy consumption to those of other similar buildings.
It is also possible to investigate abnormal buildings first through diagnosis results. The results of this
study offer a possible alternative that indicates which components should be checked in high priority
on site in terms of cooling, heating, and baseload. It is expected that this will lead to saving of the time
and effort for the diagnosis and audit process.
Author Contributions: conceptualization, D.W. Kim and S.E. Lee; formal analysis, H. Shin and S.E.
Lee; investigation, D.W. Kim.; data curation, D.W. Kim; writing—original draft preparation, D.W. Kim.;
writing—review and editing, H. Shin ; supervision, S.E. Lee
Funding: This research was funded by the Ministry of Land, Infrastructure and Transport of the Korean
government, grant number 19AUDP‐B079104‐06, under the Architecture & Urban Development Research Program.
Conflicts of Interest: The authors declare no conflict of interest.
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ZEMCH 2019 International Conference l Seoul, Korea