Strategies for improving impact of energy renovation: A case study on Korean daycare centers

• Published in: Energy and buildings 2023-04, Vol.284, p.112844, Article 112844
• Main Authors: Hee Chung, Min, Eun Kim, Seong, Woo Song, Yong, Chul Park, Jin
• Format: Article
• Language: English
• Subjects: Daycare center; Energy saving measure; Minor energy renovation
• ISSN: 0378-7788
• DOI: 10.1016/j.enbuild.2023.112844

•Analyzed the effect of minor renovation of buildings in terms of energy savings.•Minor renovations should consider the equipment capacity and energy source.•Passive strategy to reduce energy demand should be formulated before renovation.•Minor renovation helps improve energy performance of existing buildings. The world is attempting to achieve zero energy in new buildings and realize energy savings in existing buildings by renovating them. The Korean government is also conducting a project to support the renovation of aging small public buildings. As minor renovation is mainly performed when the renovation is not activated, this study aims to analyze the effect of minor renovation by comparing the effects of buildings that have undergone minor renovation. The subjects of the analysis were 16 daycare centers that had undergone minor renovations; these buildings were divided into passive, active, and passive + active groups according to the applied energy-saving measures. The passive + active group exhibited the highest energy-saving effect, whereas the passive group showed the highest cost-effectiveness. Therefore, when performing minor renovations, the equipment capacity and energy source must be considered, and a passive strategy to reduce energy demand should be formulated. This study is expected to contribute to the expansion of the renovation of existing buildings by verifying the effects of renovation according to energy-saving measures.