The purpose of this study was to analyze the energy saving effect of 2021 Green Remodeling Project for small-sized public health care building in the Chungcheongbuk-do region. After analyzing architectural drawings and pre-consulting contents for a total of nine buildings, conducting field surveys from August to November 2022, and ECO2-OD modeling after remodeling construction, we conducted a qualitative analysis of energy saving effects according to building characteristics and green remodeling contents. The total number of green remodeling items per building ranged from 4 to 8 (average 6.2), of which the number of those applied to the passive items ranged from 1 to 3 (average 2.6), and the number of items reflecting in ECO2-OD ranged from 3 to 6 (average 5.0). As a result of ECO2-OD modeling, the energy demand reduction rate by green remodeling was revealed by 14.1 to 42.8 (average 27.3)%, energy consumption was reduced by 20.8 to 47.2 (average 32.5)%. In addition, the energy efficiency rating of the building was improved by an average of 1.6 grades, confirming the need for green remodeling projects. The most significant factors affecting the reduction in energy consumption after green remodeling are the reduction in energy requirements due to the application of green remodeling items in the building sector and the installation of solar panels, while other influencing factors are the improvement in capacity and efficiency by replacing with EHP and boilers, and the reduction in capacity and density of LED lighting.
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Bae et al. (2024) studied this question.
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