• 한국태양에너지학회:학술대회논문집
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• 한국태양에너지학회 2009년도 춘계학술발표대회 논문집
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• pp.121-126
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• 2009

This study analyzed the standard school's energy usage and patterns as the zero-energy goal of primary school building, and proposed the energy reduction process of school building using energy analysis computing simulation tool. As a analysis simulation tool, Visual DOE 4.0 is used. For analysis of actual energy usage, selected primary school that is standard in the nation's energy consumption. Standard of the school's energy consumption analysis were devided into electric and gas energy. Input parameters of the simulation program based on the literature material and field survey material. after, but it was calibrated to comparison with the standard school's energy consumption. Finally, its energy usage analyzed by component and made the priority order of energy saving. Applied energy saving technologies are envelopment insulation, high efficiency lighting, high performance HAVC system and used active equipment system of solar collector and photovoltaic generation for additional savings.

• 에너지공학
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• 제23권3호
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• pp.36-41
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• 2014

The world's overall need for natural gas (NG) has been growing up fast, especially in the residential sector. The better the estimation of residential NG consumption (RNGC) distribution, the better decision-making for a residential NG policy such as pricing, demand estimation, management options and so on. Approximating the distribution of RNGC is complicated by zero observations in the sample. To deal with the zero observations by allowing a point mass at zero, a mixture model of RNGC distributions is proposed and applied. The RNGC distribution is specified as a mixture of two distributions, one with a point mass at zero and the other with full support on the positive half of the real line. The model is empirically verified for household RNGC survey data collected in Korea. The mixture model can easily capture the common bimodality feature of the RNGC distribution. In addition, when covariates were added to the model, it was found that the probability that a household has non-expenditure significantly varies with some variables. Finally, the goodness-of-fit test suggests that the data are well represented by the mixture model.

• 에너지공학
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• 제28권1호
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• pp.37-44
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• 2019

국내 건축물은 국가 온실가스 배출의 25%, 에너지소비의 20%를 차지하고 있어 건축물의 에너지 효율향상이 국가 에너지수요관리의 주 대상으로 인식되고 있다. 건축물의 에너지효율향상을 위해 "제로에너지건축물 국가 로드맵"을 작성하여 정책들을 시행하고 있으며, 제로에너지건축물 의무화 확대의 따라 조기 활성화를 통한 국가 건물에너지 수요관리 효율성을 제고 하고 있다. 또한 건축물이 완공되고 그 후 에너지절감량에 대한 성과검증에 대한 필요성 또한 높아지고 있다. 이에 따라 건축물의 에너지 성능을 평가하기 위한 방법들이 제시되어야 할 것이다. 본 논문은 국제표준 및 가이던스 분석과 동시에 국내 학교를 현장 방문하여 각종 변수 등에 대한 조사 분석을 통하여 국제적으로 적용 가능한 제로에너지스쿨의 에너지성과검증 방법을 개발, 제시하고자 한다.

• 한국BIM학회 논문집
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• 제2권2호
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• pp.17-26
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• 2012

This paper presents the results of a theoretical energy analysis of a research test bed called the Zero Net Energy Test House (ZNETH) in Omaha, Nebraska in U.S.A. The ZNETH project is being designed and built with the goal of consuming a negligible amount of energy by offsetting remaining usage after energy conservation. The theoretically consumed and generated energy levels were analyzed using energy modeling software programs. By integrating a highly graphical and intuitive analysis with a Building Information Model(BIM) of the house, this investigation introduces strategies to include sustainable materials and systems to predict energy generation with a case study of ZNETH. In addition, this paper introduces parametric analyses for better envelope design and construction material selection by analyzing simulated energy consumption with various parametric inputs, e.g., material types, location, and size. It was found that the current design of ZNETH does not meet its goal of zero net energy. Sugeestions are presented to assist ZHETH in meeting its net zero energy goal.

• 에너지공학
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• 제29권1호
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• pp.25-33
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• 2020

최근 제로에너지건축물 의무화 정책이 추진됨에 따라 Zero Energy School로의 전환을 위한 정책/제도들이 추진되고 있으나 학교 건물에 대하여 에너지절감 활동결과 그 성과를 체계적으로 분석, 검증할 수 있는 방법이 제시되어 있지 않는 상황이다. 에너지성과 검증방법론 연구를 위하여 관련 유사표준들의 현황을 참고하였으며, 그 외 방법론들의 사례 조사를 통해 현장에서 성과를 분석해 볼 수 있는 Tool에 대한 검토와 더불어 국내 학교 현장방문을 통한 에너지관리 실태 및 특성을 분석하였다. 본 논문에서는 신규, 기존학교 건물에서의 냉난방설비, 조명, 단열 강화, 운영행태 변경, 운전방법 개선 등 각종 에너지절약사업의 수행과 에너지절약사업 이행 전·후의 에너지절감량을 검증할 수 있는 M&V 방법 등에 대하여 제시하였다.

• 국제초고층학회논문집
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• 제10권1호
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• pp.35-43
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• 2021

With the rapid urbanization and growing energy use intensity in the built environment, the glazed curtainwall has become ever more important in the architectural practice and environmental stewardship. Besides its energy efficiency roles, window has been an important transparent component for daylight penetration and a view-out for occupant satisfaction. In response to the climate crisis caused by the built environment, this research focuses on the study of net-zero energy retrofitting by using a new building integrated photovoltaic (BIPV) curtainwall as a sustainable alternative to conventional window systems. Design variables such as building orientations, climate zones, energy attributes of BIPV curtainwalls, and glazed area were studied, to minimize energy consumption and discomfort hours for three cities representing hot (Miami, FL), mixed (Charlotte, NC), and cold (Minneapolis, MN). Parametric analysis and Pareto solutions are presented to provide a comprehensive explanation of the correlation between design variables and performance objectives for net-zero energy retrofitting applications.

• 교육녹색환경연구
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• 제20권1호
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• pp.19-28
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• 2021

국토교통부는 신(新)기후체제 출범에 따라 건물부분의 에너지절약 및 국가 온실가스 감축목표 달성을 앞당기기 위해 제로에너지건축물 인증제를 시행하고 있다. 2014년 ZEB 조기활성화 방안을 발표 하였으며, 2016년 1월 "녹색건축물 조성 지원법"을 개정하고 제도적 기반을 마련하여 2020년부터 공공부문을 시작으로 2025년 까지 민간부문 까지 단계적 제로에너건축물을 확산시키기 위한 계획을 수립 시행중에 있다. 2020년부터 공공부분에 속하는 학교시설은 제로에너지건축물 의무대상에 포함됨에 따라 본 연구에서는 학교시설 제로에너지건축물 인증시행에 따른 에너지요소별 자립률을 분석하고자 한다.

• 한국태양에너지학회 논문집
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• 제30권2호
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• pp.39-45
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• 2010

Zero Emission Building is abuilding which emits virtually '0(zero)' carbon dioxide. Although simple in concept, ZEB requires totally different approach from conventional building in terms of design, engineering, construction and operation. There are few research on ZEB design process as ZEB design requires understanding and knowledge regarding energy and technology. The study aims to propose a design process of Zero Emission Building for architects. The study examined the concept of Zero Emission Building through intensive literature search. The examples of Zero Emission Buildings were investigated, and strategies and technologies applied to the buildings were analyzed. Various conventional design processes were identified and analyzed to examine the applicability to ZEB design, Finally, a new design process which effectively accommodate the requirement of Zero Emission Building was proposed.

• 교육녹색환경연구
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• 제21권2호
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• pp.25-35
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• 2022

'기후 위기에 대처하기 위한 탄소 중립 및 녹색 성장에 관한 기본법' 이 제정됨에 따라, 탄소중립 달성을 위한 다양한 부문별 계획들(NDC)이 시행되고 있다. 학교시설은 '제로에너지건축물 인증'의 의무대상 건축물이며, 공공기관 건축물 중 가장 높은 비중을 차지하는 건물로, 탄소중립 시나리오의 건물부문에서 주요한 역할을 한다. 본 연구는 이러한 학교시설의 건물에너지관리시스템 보급 활성화 및 효율적인 운영관리를 위한 기초자료 제공을 위하여, 최근 에너지사용 동향과 제로에너지수준을 다양한 방면에서 분석하였으며, 학교시설에 적용된 BEMS의 효과 및 사용자 의견을 조사하였다.

• 한국조명전기설비학회:학술대회논문집
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• 한국조명전기설비학회 2006년도 춘계학술대회 논문집
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• pp.391-394
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• 2006

This paper presents soft switching zero voltage switching high frequency inverter for rare gas fluorescent lamp using dielectric-barrier discharge phenomenon. The simple high-frequency inverter can completely achieve stable zero voltage soft switching (ZVS) commutation for wide its output power regulation ranges and load variations under its constant high frequency pulse density modulation (PDM) scheme. Its transient and steady state operating principle is originally described and discussed for a constant high-frequency PDM control strategy under a stable ZVS operation commutation, together with its output effective power regulation characteristics-based on the high frequency PDM strategy. The experimental operating performances of this high frequency Inverter are illustrated as compared with computer simulation results and experimental ones. Its light dimming characteristics due to power regulation scheme are evaluated and discussed on the basis of simulation and experimental results. The feasible effectiveness of this high frequency inverter appliance implemented here is proven from the practical point of view.