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Allen, J.P. and Whittle, J.K.

The Appropriateness of Simplified Solar Algorithms

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Series: w78:1986 (browse)
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Andrew P. McCoy, Robert Schubert, Robert Dunay, Joe Wheeler

lumenHAUS: Uses and Benefits of ICT for Design-Build Educational Environments

Abstract: By many accounts, American classrooms are not using the most effective means to properly educate and train young graduates and professionals. Common goals involve educational achievement and market advantage for students, with a wide variety of proposed solutions. Among the many solutions, technology in the classroom environment has been touted as one route for translating academic goals to the market. Education in the Architecture, Engineering and Construction (AEC) industry is no different: a rise in industry and classroom technology, paired with enrollment, justifies the need to re-focus solutions from technology to provide for the academic and market needs in the built environment. The recent Virginia Tech 2009 Solar Decathlon Competition (VTSD) offered an ideal setting for better understanding effective uses of technology in the translation of these AEC goals. VTSD was a student-led, integrated classroom environment incorporating students of all disciplines in the design and construction of an energy-efficient home. Information and communication technologies (ICT) played a major role in the educational and competitive efforts, all of which could translate to market advantage. This paper aims to explore academic uses and benefits of ICT for increased market acceptance through: 1) presenting common goals to the classroom, design-build education and the 2009 Solar Decathlon competition, 2) presenting various forms of ICT used to accomplish these goals and 3) presenting preliminary results of a survey of market acceptance for incorporated technologies.

Keywords: IT Supported Architectural and Engineering Design, Communication and Collaboration Technologies, Model Based Management Tools and Systems, Building Information Modeling

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Series: w78:2010 (browse)
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H-M Chen, Y-F Ger

Integration of Computer-Aided Solar Energy System Design in Building Information Modeling

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Patrick Suermann, Raja R.A. Issa

United States Air Force Milcon Transformation: Building Information Modeling Case Studies

Abstract: The United States Air Force manages approximately $2B of traditional military construction (MILCON) per year in a typical portfolio of 100-150 projects. In Fiscal Year, 2010, the Air Force’s MILCON authority having jurisdiction, the Air Force Center for Engineering and the Environment (AFCEE) revised its standard design instruction to supplement how it managed and directed MILCON. One of the primary differences was a requirement for all vertical construction to be designed through a Building Information Modeling (BIM) approach. There were two pilot projects to assess Air Force BIM implementation. First, one project case study explored impact on typical MILCON project management practices. The HQ CENTCOM facility implemented a BIM-based approach on a standard design-bid-build project at MacDill Air Force Base, FL. A second project case study explored cutting edge research methodologies that used the BIM for facility optimization on a LEED-platinum facility. Specifically, the Tyndall Air Force Base Fitness Center targeted energy efficiency. The facility’s Electronic Management Control System (EMCS) monitored pure consumption, solar photovoltaic (PV) power meter pulse output, and solar hot water recovery systems using Digital Energy Monitors (DEM) tied to the BIM via an exported database file via the EMCS server. Lastly, AFCEE partnered with Onuma to manage and leverage their new BIM-based designs to afford greater collaboration from inception onward for USAF facilities worldwide. This research investigates owners’ lessons learned and designers’ experiences related with the initiative under MILCON Transformation, as well as the implications for shaping future USAF MILCON management and design optimization.

Keywords: Air Force, MILCON, BIM, Prototype, Collaboration, Control Systems

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Full text: content.pdf (634,937 bytes) (available to registered users only)

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Pilgrim M, Bouchlaghem D, Holmes M, Loveday D

Visualisation in building design and analysis

Abstract: "Research on data visualisation is undergoing major developments in a number of different fields. These developments include investigating ways of applying visualisation techniques and systems for more efficient manipulation, interpretation and presentation of data. Research into applied visualisation has so far taken place in the fields of Computational Fluid Dynamics, Medicine, Social Sciences, and the Environment. In the built environment field however, the potential of new visualisation technologies to enhance the presentation of performance data from simulation programmes (of the type used by engineering design consultants, for example) has remained almost unexplored. Improvements in this area would lead to a better and more efficient use of these simulation programs and would facilitate the interpretation of such output data by construction industry professionals, leading to better, more informed design decisions. This paper presents an initial study on Data Visualisation and its effective use in the thermal analysis of buildings. Much of the current data visualisation in the engineering and scientific world focuses on very large data sets produced by applications such as FEA, CFD or GIS. As such the tools developed to date are often too expensive or not appropriate for the visualisation of the relatively smaller data sets produced by thermal analysis tools. The objective of the work summarised here was to develop a method of visualising the data produced by the thermal analysis tools which would run on an average desktop PC and be easy to maintain/customise and above all present the data in an intuitive manner. A workplace observational study of several engineers performing such an analysis revealed each was spending a significant amount of time manipulating the output within commercial spreadsheet packages. Further studies revealed the most common tasks were the inspection of predicted internal conditions, location of glazed elements transmitting significant solar radiation and the identification of high internal surface temperatures. Two applications were therefore proposed. The first is designed to automatically process the output within the spreadsheet environment. The second is designed to display the solution in three dimensions to aid spatial recognition and data navigation. The spreadsheet tools were developed over a period of several months and then released to all users of the analysis tools. The 3D tool was developed over a longer period and has been subjected to small group tests. Each tool was developed using Microsoft Visual Basic making them both easy to maintain and freely available. The 3D tool reads in flat text files produced by the analysis and automatically generates a framed HTML page with an embedded 3D VRML world describing the building and its results. This study shows that each of the proposed applications significantly improves some of the attributes associated with usability, namely; learnability, efficiency, memorability, errors and satisfaction. The spreadsheet tool increased efficiency and decreased errors but offered no real satisfaction. The 3D tool offers increased satisfaction but at present does not efficiently present all of the data required. Finally, It is possible to develop low cost Data Visualisation tools to improve the overall usability of a thermal analysis tool within a built environment consultantcy."

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Full text: content.pdf (404,505 bytes) (available to registered users only)

Series: w78:2000 (browse)
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Class: class.social (0.027102) class.environment (0.018138) class.economic (0.016196)
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Permission to reproduce these documents have been graciously provided by Icelandic Building Research Institute. The assistance of the editor, Mr. Gudni Gudnason, is gratefully appreciated


Rose, A.F.

A Passive Solar Heating System with Microprocessor Control

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Full text: content.pdf (1,117,233 bytes) (available to registered users only)

Series: w78:1986 (browse)
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Yong Cho, George Morcous, Koudous Kabassi, Jill Neal

BIM-Driven Economic Analysis for Zero Net Energy Test Home

Abstract: This paper presents a case study that utilized a Building Information Model (BIM) for 5D cost estimation and theoretical energy analysis to support economic study of a research test bed called the Zero Net Energy Test House (ZNETH). The ZNETH project is being designed and built with the goal of consuming a negligible amount of energy by offsetting usage through energy conservation and residential energy generation. To offset the consumed energy of the household occupants, a wind turbine and solar panels were selected as the energy production resources for this project along with several sustainable materials and systems such as Insulated Concrete Foundation (ICF), Exterior Insulation Finishing System (EIFS), and a closed loop geothermal system. By integrating the highly graphical and intuitive analysis with a BIM of the house, this investigation introduces strategies to include such renewable energy options and sustainable building materials for the ZNETH to predict its economic benefits. The theoretically consumed and generated energy levels were analyzed. It was found that the current design of ZNETH does not have greater economic benefit than cost. In addition, this research conducted sensitive analyses for better design and construction material selection with various sustainable design alternatives. Finally, theoretical suggestions are presented to assist ZNETH in meeting its net zero energy goal and economic returns. Findings from this research will be used for designing ZNETH II which is currently under investigation.

Keywords: BIM, 5D cost estimation, zero net energy test house, energy analysis, economic analysis

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Full text: content.pdf (165,906 bytes) (available to registered users only)

Series: w78:2010 (browse)
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