Building Energy Efficiency through the Application of Digital Twin-based BEMS

Jaemin Hwang; Jiwon Kim; Sungmin Yoon

doi:10.7836/kses.2024.44.3.033

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2024 Vol.44, Issue 3 Preview Page Next Page

Research Article

Building Energy Efficiency through the Application of Digital Twin-based BEMS 디지털 트윈 기반의 BEMS 적용을 통한 건물에너지 효율화 방법

30 June 2024. pp. 33-42

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Abstract

Building energy management systems (BEMS) are widely used to improve building energy efficiency. However, beyond simple monitoring and management, there are still limitations to implementing specific methods for energy savings and efficiency improvements during the operational phase. Simultaneously, the concept of a digital twin (DT) has been actively researched as a concept for the interaction of data and operational information between real buildings and virtual models. By integrating the DT concept into the BEMS, smooth communication between real buildings and virtual models is possible. A virtual model is defined as a mathematical model that describes physical behavior during the operational phases of a real building. This model can provide building energy efficiency methods based on real building data and the physical behavior of the building. Therefore, this study proposes a DT-based BEMS (DT-BEMS). A DT-BEMS consists of predicted mean vote (PMV) virtual sensors, energy sub-metering virtual sensors, and Holistic Operational Signature (HOS) analysis methods. Utilizing data from the BEMS, PMV virtual sensors obtain the PMV in real residential areas. After applying the virtual sensors, the HOS categorizes the operational states and offers energy optimization information. In this study, a DT-BEMS environment was developed for an office building. Thus, an organic process was realized in which real building data were transmitted through virtual models to provide energy efficiency information back to the target building.

Keywords

Digital twin

BEMS

Building energy efficiency

Building energy diagnosis

Virtual sensor

키워드

디지털 트윈

건물에너지관리시스템

건물 에너지 효율화

건물 에너지 진단

가상센서

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Information

Publisher :Korean Solar Energy Society
Publisher(Ko) :한국태양에너지학회
Journal Title :Journal of the Korean Solar Energy Society
Journal Title(Ko) :한국태양에너지학회 논문집
Volume : 44
No :3
Pages :33-42
Received Date : 2024-03-28
Revised Date : 2024-04-30
Accepted Date : 2024-04-30
DOI :https://doi.org/10.7836/kses.2024.44.3.033

Journal of the Korean Solar Energy Society ISSN:1598-6411(Print) 2508-3562(Online) 한국태양에너지학회 논문집

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