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배민정(Minjung Bae),지정훈(Jeonghoon Ji),우균(Gyun Woo) 한국정보과학회 2008 한국정보과학회 학술발표논문집 Vol.35 No.2
본 논문에서는 소스코드를 분석하여 시각화하는 방법으로 사각형 모양으로 면을 가득 채우는 프렉탈로 알려진 힐버트 곡선(Hilbert Curve)을 이용한 간단한 시각화 방법을 제시하고 있다. 이 시각화 방법은 한 프로그램에서 함수, 기본 문장, 제어구조를 분석하고 제어구조를 선택구조와 반복구조를 구분하여 중첩 깊이를 시각화하였다. 시각화 결과의 효과적인 측점을 위해 H-CURVE 시각화 결과를 위한 복잡도를 정의하였다. 정의한 복잡도를 이용하여 프로그램의 실행시간과 복잡도의 상관관계를 알아보았다. 실험에 따르면 H-Curve 복잡도로 프로그램 실행시간을 추정하는 사용할 수 있다.
기존 공공건물 분석을 통한 ZEB 그린리모델링 적용방안 및 사례 분석
배민정(Bae Minjung),안호상(Ahn Hosang),윤성준(Yun Sungjun),강재식(Kang Jaesik) 한국태양에너지학회 2022 한국태양에너지학회 논문집 Vol.42 No.6
Most of the existing buildings in Korea, constructed before the insulation standards for parts were strengthened, are requested by an act to improve the building energy performance grade. In this study, five old public buildings were examined to evaluate their energy efficiency rating using an in-situ analysis of each old public building. Energy efficiency measures were derived to achieve the zero-energy level of the buildings’ energy performance based on the energy consumption analysis results using ECO2 and the actual building status survey. It is expected that all buildings to be analyzed will be able to achieve ZEB 5th grade when applying the appropriate remodeling measures considering the characteristics of each building. To effectively reduce greenhouse gas emissions, energy-intensive buildings need to be selected as the target of the green remodeling project as a top priority. In the case of buildings with a 1++ grade, current energy efficiency is excellent to date. Therefore, it is necessary to improve the overall building performance by improving the lack of partial performance.
노후 공공건축물의 현장 조사 결과에 따른 에너지효율등급 평가 결과 분석
배민정(Bae Minjung),안호상(Ahn Hosang),강재식(Kang Jaesik) 한국태양에너지학회 2023 한국태양에너지학회 논문집 Vol.43 No.6
The building energy efficiency grade of old buildings in Korea is rated according to criteria of building energy performance calculated by the ECO2 energy simulation program. To evaluate this performance, ECO2 input data are required, which influence both the intermediate decision process and final calculation results. However, the required input data collection of old buildings for ECO2 simulation is not as simple as expected, and is more difficult than that for new buildings because of many unrecorded changes and updates after the original construction. In these aspects, certification assessment documents for old public buildings are not suitable for preparing input data for ECO2 and usually do not reflect the actual status and condition of buildings from either passive or active perspectives. Therefore, in this study, an ECO2 building energy simulation was performed for 41 old public buildings to examine how input data differences from on-site audits can induce differences in both the simulation process and results. The error range of the primary energy consumption for grades extended from 0 to 231.9 ㎾h/㎡․ yr, depending on whether on-site audit results are considered or not. Because of the long operation period of old public buildings, the initial design plan and current operation status have changed significantly, and our suggestion is that the confirmation step for collecting input data for old public buildings must be a prerequisite and an essential aspect for on-site investigation based on ECO2 simulation.
국내 비주거용 건물의 기밀성능 측정 결과를 통한 기밀 시공 가이드라인 개발
배민정,최경석,Bae, Minjung,Choi, Gyeongseok 한국토지주택공사 토지주택연구원 2020 LHI journal of land, housing, and urban affairs Vol.11 No.3
Since the design Standard for Energy Conservation in Building was implemented in 2008 for the first time, building elements such as window and door should satisfy the minimum criteria to apply for a building. Though its regulation does not cover the whole building yet, recent demand to reduce energy consumption in building sector grows rapidly year by year and also draws a lot of interest to ensure the whole building level. For example, a Zero energy building, one of low-energy buildings, requires a customized solution to resolve the air leakage issue to meet the standards in achieving the high level of air tightness. In this study, six non-residential buildings were tested by fan pressurization method to observe the air tightness of whole building to suggest the construction guideline for air tightness of low-energy building. Five out of six tested buildings showed 0.27 to 1.16 h<sup>-1</sup> of number of air changes except one community center. These buildings were carefully constructed not only for building planning but also for parts where there was a concern of air leakage, thereby securing high levels of air-tightness. The construction skills were developed as a checklist to manage and supervise the construction site. It is our suggestion to use this checklist at construction sites for ZEB with the high level of air-tightness.