리모델링 프로젝트의 특성과 에너지 절감 성능 사이의 관계에 관한 연구

Abstract

The urbanization phenomenon, which is paying attention all over the world, is the main cause of environmental pollution. In the case of the EU, buildings account for a large proportion of final energy consumption and greenhouse gas emissions. Many researchers are making various efforts to improve the energy performance of aging buildings in smart cities to solve these problems.

However, since most of the research focuses on the software aspects of monitoring and control-oriented using IoT for energy efficiency of buildings, studies dealing with hardware aspects such as physical characteristics of buildings and techniques improving energy performance were insufficient. This study aims to analyze the causal relationship between the three factors (i.e., characteristics of buildings, renovation techniques for energy saving, energy saving performance) by establishing a core concept.

The data for each factor was collected through a case study and analyzed using a Structural Equation Model (SEM). The causal relationship between the three factors and direct/indirect effects through effect decomposition analysis were derived, and the results were obtained: (ⅰ) In the causal relationship between the factors, the factor including “Lighting” and “PV system” had the strongest negative effects on energy saving performance (standardized effect = -.683, p < .001). (ⅱ) In the effect decomposition analysis, "Direction of building" has the greatest indirect effect on "energy saving rate per unit period" by mediating "Lighting" (standardized direct effects = .258, p < .01). Using this causal effect analysis of the three factors can enable the selection of effective renovation techniques and have a positive impact on energy saving performances in the future energy-saving smart city projects.