BUILDING INFORMATION MODELING (BIM)-BASED DESIGN OF ENERGY EFFICIENT BUILDINGS

ChungSuk Cho,Don Chen,Sungkwon Woo 한국BIM학회 2012 KIBIM Magazine Vol.2 No.1

With the increased awareness of energy consumption as well as the environmental impact of building operations, architects, designers and planners are required to place more consideration on sustainability and energy performance of the building. To ensure most of those considerations are reflected in the building performance, critical design decisions should be made by key stakeholders early during the design development stage. The application of BIM during building energy simulations has profoundly improved the energy analysis process and thus this approach has gained momentum. However, despite rapid advances in BIM-based processes, the question still remains how ordinary building stakeholders can perform energy performance analysis, which has previously been conducted predominantly by professionals, to maximize energy efficient building performance. To address this issue, we identified two leading building performance analysis software programs, Energy Plus and IES <Virtual Environment> (IES <VE>), and compared their effectiveness and suitability as BIM-based energy simulation tools. To facilitate this study, we examined a case study on Building Performance Model (BPM) of a single story building with one door, multiple windows on each wall, a slab and a roof. We focused particularly on building energy performance by differing building orientation and window sizes and compared how effectively these two software programs analyzed the performance. We also looked at typical decision-making processes implementing building energy simulation program during the early design stages in the U.S. Finally, conclusions were drawn as to how to conduct BIM-based building energy performance evaluations more efficiently. Suggestions for further avenues of research are also made.

BUILDING INFORMATION MODELING (BIM)-BASED DESIGN OF ENERGY EFFICIENT BUILDINGS

Cho, Chung-Suk,Chen, Don,Woo, Sungkwon Korean Institute of Building Information Modeling 2012 KIBIM Magazine Vol.2 No.1

With the increased awareness of energy consumption as well as the environmental impact of building operations, architects, designers and planners are required to place more consideration on sustainability and energy performance of the building. To ensure most of those considerations are reflected in the building performance, critical design decisions should be made by key stakeholders early during the design development stage. The application of BIM during building energy simulations has profoundly improved the energy analysis process and thus this approach has gained momentum. However, despite rapid advances in BIM-based processes, the question still remains how ordinary building stakeholders can perform energy performance analysis, which has previously been conducted predominantly by professionals, to maximize energy efficient building performance. To address this issue, we identified two leading building performance analysis software programs, Energy Plus and IES <Virtual Environment> (IES <VE>), and compared their effectiveness and suitability as BIM-based energy simulation tools. To facilitate this study, we examined a case study on Building Performance Model (BPM) of a single story building with one door, multiple windows on each wall, a slab and a roof. We focused particularly on building energy performance by differing building orientation and window sizes and compared how effectively these two software programs analyzed the performance. We also looked at typical decision-making processes implementing building energy simulation program during the early design stages in the U.S. Finally, conclusions were drawn as to how to conduct BIM-based building energy performance evaluations more efficiently. Suggestions for further avenues of research are also made.

A review on sustainable construction management strategies for monitoring, diagnosing, and retrofitting the building’s dynamic energy performance: Focused on the operation and maintenance phase

Hong, Taehoon,Koo, Choongwan,Kim, Jimin,Lee, Minhyun,Jeong, Kwangbok Elsevier 2015 APPLIED ENERGY Vol.155 No.-

<P><B>Abstract</B></P> <P>According to a press release, the building sector accounts for about 40% of the global primary energy consumption. Energy savings can be achieved in the building sector by improving the building’s dynamic energy performance in terms of sustainable construction management in the urban-based built environments (referred to as an “<I>Urban Organism</I>”). This study implements the concept of “<I>dynamic approach</I>” to reflect the unexpected changes in the climate and energy environments as well as in the energy policies and technologies. Research in this area is very significant for the future of the building, energy, and environmental industries around the world. However, there is a lack of studies from the perspective of the dynamic approach and the system integration, and thus, this study is designed to fill the research gap. This study highlights the state-of-the-art in the major phases for a building’s dynamic energy performance (i.e., monitoring, diagnosing, and retrofitting phases), focusing on the operation and maintenance phase. This study covers a wide range of research works and provides various illustrative examples of the monitoring, diagnosing, and retrofitting of a building’s dynamic energy performance. Finally, this study proposes the specific future developments and challenges by phase and suggests the future direction of system integration for the development of a carbon-integrated management system as a large complex system. It is expected that researchers and practitioners can understand and adopt the holistic approach in the monitoring, diagnosing, and retrofitting of a building’s dynamic energy performance under the new paradigm of an “<I>Urban Organism</I>”.</P> <P><B>Highlights</B></P> <P> <UL> <LI> This study reviews the state-of-the-art in “energy” as well as “building”. </LI> <LI> Building’s dynamic energy performance should be managed in the built environments. </LI> <LI> This study summarizes recent progress in the building’s dynamic energy performance. </LI> <LI> The major phases can be categorized into monitoring, diagnosing, and retrofitting. </LI> <LI> This study proposes the specific future development directions and challenges by phase. </LI> </UL> </P>

BIM기반 친환경건축물 등급 인증기준의 에너지성능지표(E.P.I)의 개선방안에 관한 연구

이권형(Lee Kweon-Hyoung),김인한(Kim In-Han),추승연(Choo Seung-Yeon) 대한건축학회 2011 대한건축학회논문집 Vol.27 No.9

Today, there is a growing recognition of environmental pollution worldwide and green buildings and energy saving buildings for green growth are collectively being developed, according to the recent architectural trend. For those reasons, many countries in the world are establishing laws for green growth and modifying design guidelines and green building certification systems, currently. Korean government also announced the national strategies for green growth and set ‘Green Building Certification Systems’ and ‘Energy Saving Design Standards of Buildings’ by establishing the Green Growth Committee directly responsible to the President, according to this global trend. In the domestic green building certification systems, energy performance of buildings are being verified and assessed based on the ‘Energy Performance Index Review’ of ‘the Energy Saving Design Standards of Buildings’, but the current verification method is being carried out based on overall heat transfer coefficient of thermal insulators, walls, roofs, slabs, windows and doors and thickness and scale. It is therefore inappropriate to verify energy saving plans from the beginning stage of building design. To get over them, we need to assess alternatives directly using BIM-based 3D Modeling and Simulation and remedy the current verification methods, according to changes in design elements and energy performance. This experiment was designed to model business Facilities using BIM-based Revit Architecture and analyze energy performance of buildings, depending on changes in geography, weather information, direction and facade plan which have been insufficiently verified so far, even though they are closely related to energy performance of buildings, after extracting information of buildings modeled by a building energy performance analysis program, Ecotect Analysis using gbXML extension. After investigating the possibility for simulation verification methods through BIM-based modeling, in this study, change aspects of the energy performance index were analyzed, according to changes in building design elements. Based on the analysis results, this study will suggest supplement points and appropriate verification methods for the future BIM-based green building certification.

제로에너지건축물의 공사비 증가분 산출에 관한 연구

심홍석(Hong-Souk Shim),이성주(Sungjoo Lee) 한국산학기술학회 2021 한국산학기술학회논문지 Vol.22 No.1

한국은 건물부문 온실가스 감축 목표 달성을 위한 핵심정책으로 2020년부터 공공부문 신축 건축물을 대상으로 제로에너지건축물 인증 의무화를 시행하였다. 이 논문은 제로에너지건축물을 활성화시키고자 하는 정책 환경에서 건축관계자들이 제로에너지건축 구현에 의사결정을 위해 참조할 수 있는 에너지절감 기술과 경제성 요인을 제시하는 것이 목적이다. 본 연구를 위해 최근 3년간 건축물 에너지효율등급 인증 자료와 공공기관을 대상으로 공사비 세부 내역서 자료를 수집하여 건축물 에너지 항목에 대한 공사비를 분석하였다. 또한, 건축물 에너지효율등급 인증 자료를 바탕으로 베이스라인 건축물의 각 에너지항목별 에너지성능을 도출하였으며, 베이스라인 건축물의 에너지항목에 대해 단계적으로 에너지성능 값을 상승을 시키는 반복적 시뮬레이션을 통해 제로에너지건축물의 에너지항목별 에너지성능 값을 도출하였다. 최종적으로 도출된 베이스라인 건축물과 제로에너지건축물의 에너지성능 값에 조사된 에너지항목별 공사비를 적용하여, 베이스라인 건축물과 제로에너지건축물의 에너지항목별 공사비를 도출하였다. 그 결과 제로에너지건축물을 구현하는 데 조명설비가 10.5%로 에너지절감에 가장 큰 기여를 하며, 냉 · 난방 시스템의 공사비 증가분이 9.1%로 가장 작은 것으로 분석되었다. As a core policy for achieving the goal of reducing greenhouse gas emissions in the building sector, Korea has enforced the mandatory certification of zero energy buildings for new public buildings from 2020. This study suggests energy-saving technologies and economic factors that building officials can refer to for decision-making on the implementation of zero energy buildings. For this study, the construction cost for the energy item of a building was analyzed by collecting the building energy efficiency level certification data and detailed construction cost statement data from public institutions for the last three years. Based on the building energy efficiency certification data, each energy item of the baseline building was derived, and the energy performance of the zero energy building was derived through repetitive simulations by gradually increasing the energy performance value of the baseline building. By applying the analyzed construction cost, the construction cost for each energy item of the baseline and zero energy buildings was derived. As a result, the lighting equipment contributed up to 10.5% energy savings, and the increase in construction cost of the cooling and heating system was at least 9.1%.

Development of an evaluation process for green and non-green buildings focused on energy performance of G-SEED and LEED

Jeong, Jaewook,Hong, Taehoon,Ji, Changyoon,Kim, Jimin,Lee, Minhyun,Jeong, Kwangbok Elsevier 2016 Building and environment Vol.105 No.-

<P><B>Abstract</B></P> <P>This study aims to develop an evaluation process for comparing the energy performances of Green and non-Green buildings. The information on the building attributes and energy consumption of 455 multi-family housing complexes (MFHCs) in 2014, including 321 non-certified MFHCs and 126 MFHCs that accredited Green Standard for Energy and Environmental Design (G-SEED) certification (an official Green Building certification in South Korea) and 8 MFHCs that accredited Leadership in Energy and Environmental Development (LEED) certification, were applied to the empirical study. Data-mining techniques are applied to develop the comparison groups considering various building attributes, and the database was classified into four groups based on the average enclosed area per household (AEA). It was shown that the large-AEA groups (i.e., Group 4, over 143.47 m<SUP>2</SUP>) had less energy use intensity (EUI) than the small-AEA groups (i.e., Group 1, under 97.04 m<SUP>2</SUP>). The mean of site EUI for Groups 1, 2, 3, and 4 were significantly different (125.29, 116.35, 110.89, and 101.00 kWh/m<SUP>2</SUP>∙y, respectively). While the G-SEED- and LEED-certified MFHCs were considered to have up to 10 and 15% energy savings, respectively, compared to all non-certified MFHCs, the comparative analysis by the developed Groups 1, 2, 3, and 4 revealed that the G-SEED-certified MFHCs and the non-certified MFHCs had no significant differences in energy performance. Therefore, the energy performance rating system of G-SEED should be revised. The proposed energy performance evaluation process can also be useful in identifying the energy performance of other buildings.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Energy performance of green building certifications needs to be evaluated. </LI> <LI> Energy performance evaluation process for buildings was developed. </LI> <LI> 126 G-SEED, 8 LEED, and 321 non-certified MFHCs were evaluated using the process. </LI> <LI> G-SEED and LEED have no significant energy savings compared to non-certified MFHCs. </LI> <LI> LEED has bigger potential for reducing energy consumption than G-SEED. </LI> </UL> </P>

제로에너지빌딩의 기술 패키지 적용을 위한 에너지성능 평가 도구 비교분석 및 개선방안 제안

조수(Soo Cho),한설이(Seol-Yee Han),성욱주(Uk-Joo Sung),김석현(Seok-Hyun Kim) 한국건축친환경설비학회 2017 한국건축친환경설비학회 논문집 Vol.11 No.4

The research of energy saving in building was studied many case of studies. The zero energy building contained a two concept like a minimum energy consumption and renewable energy facility installation for energy suppling. It means what the envelope of Zero Energy building has high performance of thermal. And the facility of building use independent heating and cooling energy consumption without outer source too. For accomplish the zero energy building, many technology were developed and applied at new building. In case of applying technology, the critical technology is enough for the zero energy building but the joint technology for zero energy building is not enough. Also the supply of the economical technology is difficult. To solving these difficult, the energy performance evaluation tool is used by many researchers in phase of the building design. These tool have a problem about reproducibility by the different input data. That was inputted by each simulator and they divided to level about expertise and situation. So they need to getting an specific information of building and advanced training of simulation. But for accomplish the zero energy building, these tool must be have modified to analysis of the building energy consumption suitably. Absolutely these tool need to update for the precision of analysis results. Additionally the zero energy building design contain a new technology for energy saving through the tool’s extendability. In this study, authors was proposed the technical package and the case of simulation tool was compared for improvement suggestion. And this study was based actual certification and analysis tools like a ECO2. By these result, the authors was proposed two the improvement suggestion ‘User friendly Interface’ and ‘Analysis reliability’.

제로에너지건축물 통합설계교육을 위한 교과목 개선방안 연구 - 미에너지부 솔라데카슬론 디자인챌린지를 중심으로 -

이지환(Lee, Jeehwan),이명주(Lee, Myoungju) 대한건축학회 2022 대한건축학회논문집 Vol.38 No.10

The vision and goal of the Green Building Development Policy of Korea are to promote zero-energy infrastructures, revitalize the green building markets through green remodeling, strengthen zero-energy technology development, and foster zero-energy building professionals. Therefore, the importance of zero-energy education and human resources for the next generation is highlighted, along with expanding the domestic zero-energy building markets responding to climate change, renewable energy industry policy, and a mandatory zero-energy building certification system. To educate undergraduate students as zero-energy building designers and technical professionals is up to integrated zero-energy design practicum. The curricula for performance-based building design can consistently provide students with the integrated perspective on architecture, engineering, and analytic skills needed to integrate high-performance measures with a sustainable design. High-performance buildings include comprehensive building science, energy efficiency, optimized mechanical systems, indoor air quality, resilience, and water conservation. This study is to suggest the potential application of an integrated zero energy design practicum through the U.S. Department of Energy Solar Decathlon Design Challenge, which incorporates various subjects such as architecture, engineering, market analysis, durability and resilience, embodied environmental quality, integrated performance, occupant experience, comfort and environmental quality, energy performance, and presentation. It is vital to develop an integrated zero-energy design practicum that can fuse architectural design, technological theories, and analytic skills for building energy performance.

건축물 에너지 통합지원시스템을 위한 저에너지 건축물 및 기술, 에너지 성능 통합 DB 구축

김철호(Kim, Chul-Ho),이승언(Lee, Seung-Eon),김강수(Kim, Kang-Soo) 한국건축친환경설비학회 2019 한국건축친환경설비학회 논문집 Vol.13 No.3

We built a database of high-performance buildings and energy-saving technologies of the domestic and foreign countries. Futhermore, we selected major energy-saving technology from high-performance building and technologies DB. Energy-saving technologies comprising 15 cases were categorized into passive, active, and renewable energy systems. We analyzed the contribution of each technology in reducing the primary energy consumptions by using EnergyPlus v9.1.0 dynamic simulation tool. The structuring of the high-performance buildings and energy-saving technologies database, part of the “Development of building energy integrated support system for the spread of low-energy building”, will facilitate web-based database searches and help users increase their understanding of high-performance buildings and energy-saving technologies as well as improve their knowledge level. It will also contribute to the Korean government’s reduction of greenhouse gas emissions in the building sector and the improvement of building energy performance in Korea through the analysis of the effects of building energy such as primary energy consumption and energy savings strategies.

건축물의 에너지절약설계기준 강화에 따른 업무용 건물의 에너지성능 개선 효과

김지혜(Kim, Ji-Hye),성제은(Sung, Jea-Eun),김혜기(Kim, Hye-Gi),박덕준(Park, Duk-Joon),김선숙(Kim, Sun-Sook) 한국건축친환경설비학회 2020 한국건축친환경설비학회 논문집 Vol.14 No.1

Building energy codes are widely used worldwide as a key policy tool for improving building energy efficiency by defining the minimum requirement for the energy performance of new buildings. In Korea, the building energy code includes prescriptive criteria such as U-value requirements for each building component by climate zones and EPI (Energy performance index) as well as performance criteria for primary energy use. The purpose of this study is to suggest the direction to revise building energy code based on the analysis of improvement in energy performance of buildings according to its evolution over the past 20 years. The energy needs and primary energy uses were calculated for three office buildings and four cities. An increasing trend of energy performance was found with the reinforcing of the code, and some recommendations for future revision were suggested.