• Title/Summary/Keyword: Whole Building Design

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Needs and Issues for Better Use of Building Energy Simulation Tools at Design Stage (설계 과정에서의 빌딩 에너지 시뮬레이션 도구 활용과 개선)

  • Kim, Deuk-Woo;Park, Cheol-Soo
    • Journal of the Architectural Institute of Korea Planning & Design
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    • v.28 no.10
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    • pp.317-325
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    • 2012
  • Building simulation has enormously developed over the past three decades. Building simulation tools can describe mass and heat transfer phenomena in buildings with high accuracy. However, such tools are not widely and pervasively used in the design firm on daily basis. At most, the tools are being used for code check or green building accreditation, not being iteratively used throughout the whole building design process for better decision making. This paper reports three factors (external, internal, technical) to investigate the aforementioned issue. For this purpose, the authors utilized international literature and domestic surveys. The external factor includes tight schedule, limited budget and cost, overloaded and ill-informed staff, and lack of education and proper training. The internal factor includes differences in knowledge and praxis between designers and simulationists. The technical factor includes steep learning curves and user-unfriendly interface of simulation tools, language barrier in program manual, lack of modeling information and library suited for domestic circumstances. Finally, in the paper, it is elaborated what should be done for better use of building simulation tools in the design process.

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

  • Cho, Chung-Suk;Chen, Don;Woo, Sungkwon
    • Journal of KIBIM
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    • v.2 no.1
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    • pp.1-6
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    • 2012
  • 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 (IES ), 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.