ECO2-OD 에너지 성능기반 도시 단위 그린 리모델링 의사결정 지원프로그램 개발

Abstract

According to the ‘2050 Carbon neutral strategy of the Republic of Korea’, the Green Remodeling(GR) business is being crucial. However, green remodeling adoption rate is decreasing recently. The reasons is that GR business feasibility assessment is not carried out properly before the GR project. The evaluation criteria for GR business feasibility assessment is energy consumption reduction and greenhouse gas reduction rates. In general, energy simulation is widely used to check the energy saving rate. Energy simulation require a lot of program techniques and data analysis abilities. Also, there are problems to make a city scale energy simulation because of increasing old buildings and expansion GR business. Therefore, this study evaluates the decision-making of the city scale GR projects quantitatively; develops a program that can calculate energy savings and greenhouse gas savings.

First, the decision-making program inputs building information on building register. Next, GR improvement elements (Passive, Active, and Renewable) enter the in Lv3 to Lv5, GR application result is designed to appear on the Excel dashboard. The development process was carried out in six stages, with the 1st stage 'Set User Input Value Criteria', the 2nd stage 'Base Model Development', the 3rd stage 'ECO2-OD Program Variable Extraction', the 4th stage 'Development of Reduction Rate Trend Line', the 5th stage 'Excel Data Base' and the 6stage 'User Interface Design'. The decision-making program is conducted two significance evaluations such as real energy consumption and ECO-2 OD program result. As a result, it shows 36% error rate in real energy consumption. It was expected that there are different the definition of primary energy consumption and real energy consumption. On the other hand, it was analyzed that the error rate of the comparative evaluation of the ECO2-OD program was about 6%, and the error rate of the comparative evaluation of the ECO2-OD program was relatively small because both the ECO2-OD program and the decision support program applied the evaluation criteria. Although there was an error that the error rate was large in the comparative evaluation of actual usage, it was judged that the ECO2-OD program used for actual energy performance evaluation and the error rate were around 10%, proving its validity as a simple evaluation tool.The "City-level Green Remodeling Decision Support Program" can calculate green remodeling energy performance and CO2 emissions for the entire target building, purpose, and section. So it is expected highly useful as an decision-making program at the beginning of the green remodeling project.