The Experts below are selected from a list of 306 Experts worldwide ranked by ideXlab platform
David E. Claridge - One of the best experts on this subject based on the ideXlab platform.
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Final Report on Retrospective Testing and Application of an Automated Building Commissioning Analysis Tool (ABCAT)
2009Co-Authors: John Bynum, Guanjing Lin, David E. ClaridgeAbstract:This report was prepared by the Energy Systems Laboratory (ESL) for the Lawrence Berkeley National Laboratory (LBNL). Neither the ESL or LBNL or any of their employees, makes any warranty, express or implies or assumes any legal liability or responsibility for the accuracy, completeness or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe on privately owned rights. This report has not been approved or disapproved by the LBNL nor has the LBNL passed upon the accuracy or adequacy of the information in this report.
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Retrospective Testing of an Automated Building Commissioning Analysis Tool (ABCAT)
ASME 2009 3rd International Conference on Energy Sustainability Volume 2, 2009Co-Authors: Guanjing Lin, David E. ClaridgeAbstract:Commissioning services have proven successful in reducing Building energy consumption, but the optimal energy performance obtained by Commissioning may subsequently degrade. Automated Building Commissioning Analysis Tool (ABCAT), which combines a calibrated simulation with diagnostic techniques, is a simple and cost efficient tool that can help maintain the optimal Building energy performance after Building Commissioning. It can continuously monitor whole Building energy consumption, warn operation personnel when an HVAC system problem has increased energy consumption, and assist them in identifying the possible cause(s) of the problem. This paper presents the results of a retrospective implementation of ABCAT on five Buildings, each of which has at least three years of post-Commissioning daily energy consumption data, on the Texas A&M University campus. The methodology of ABCAT is reviewed and the implementation process of ABCAT on one Building is specifically illustrated. Eighteen faults were detected in 15 Building-years of consumption data with a defined fault detection standard. The causes of some of the detected faults are verified with historical documentation. The remaining fault diagnoses remain unconfirmed due to data quality issues and incomplete information on maintenance performed in the Buildings.Copyright © 2009 by ASME
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Plugging Holes: Uncovering Critical Resource Gaps Needed for Commissioning to Thrive
2006Co-Authors: Aleisha Khan, David E. Claridge, T. Haasl, Hannah Friedman, Malcolm VerdictAbstract:The potential impact of Commissioning is compelling – according to the U.S. Department of Energy’s 1998 National Strategy for Building Commissioning, $50 million can be saved annually if Commissioning occurs in just one percent of existing large commercial Buildings (over 25,000 square feet) and seven percent of new construction. But do service providers have what they need to implement the large scope of Commissioning now being encouraged across the U.S.? “Building Commissioning: Innovation to Practice,” an ongoing multi-state collaborative program co-funded by a U.S. Department of Energy STAC grant, is standardizing and streamlining Commissioning approaches through new tools and technology in an effort to provide this support. The “Building Commissioning: Innovation to Practice,” program has effectively addressed the high demand for training and tools that streamline Commissioning – but the need existing in the Commissioning field today has by no means been met. For example, experienced Commissioning providers piloting the Program’s functional testing resource confirmed the value of the content, but requested revisions to access it in different ways and suggested expanded content. Commissioning providers filled the Program’s retroCommissioning training sessions that provided four-days of advanced hands-on training, while suggesting subjects for additional workshops. The Program is developing and piloting tools to automate some of the data-intensive aspects of the Commissioning process – but there is more to do before these can be commonly used by Commissioning providers. While utility financial incentives and State mandates provide increased motivation to Building owners, the activities of the “Building Commissioning: Innovation to Practice” program highlight the large need for training and effective resources for Commissioning providers. It is likely that only a concerted effort in both of these areas will result in the successful and broad uptake of Commissioning.
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USING SIMULATION MODELS FOR Building Commissioning
2004Co-Authors: David E. ClaridgeAbstract:The International Energy Agency ECBCS Annex 40 “Commissioning of Buildings and HVAC Systems for Improved Energy Performance” task investigating Use of Whole Building Simulation in Commissioning has identified the following applications of whole simulation in the Commissioning process: 1) during the design process; 2) in post-construction Commissioning of new Buildings; 3) design simulation for ongoing Commissioning; 4) calibrated simulation for retro Commissioning; 5) calibrated simulation for on-going Commissioning; and 6) simulation to evaluate new control code. These applications are discussed and examples of each of these applications are provided. The only one of these which has been applied in routine Commissioning projects is the use of calibrated simulation for retro Commissioning. The other examples have been applied in a research setting, and costs must be lowered for routine application, but there appears to be potential for significant application of simulation in the Commissioning process.
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Investigation of the persistence of new Building Commissioning
Lawrence Berkeley National Laboratory, 2002Co-Authors: Amanda Potter, Hannah Friedman, T. Haasl, David E. ClaridgeAbstract:Commissioning is gaining increasing recognition as a cost-effective strategy for reducing commercial Building energy use. Although the success and cost-effectiveness of Commissioning projects depends on how well the benefits of Commissioning persist over time, this aspect of Commissioning is not well understood. The persistence of Commissioning benefits was recently studied in a PIER project evaluating ten Buildings that were commissioned at Building start-up at least two years ago. The researchers examined the Commissioning reports, control algorithms, EMCS point measurements, and energy use data, and conducted operator and Commissioning provider interviews to investigate the persistence of Commissioning benefits. In addition, they conducted site visits in a sample of the Buildings. A set of Commissioning measures was selected for each Building to compare the persistence of benefits. Persistence was measured both qualitatively through a discussion of occupant comfort and decreased maintenance and quantitatively through estimations of energy savings. This paper reports the results of the study. The discussion includes how well the benefits of Commissioning persisted over time, reasons for declining performance, and methods for improving persistence. The results provide valuable insight into how to estimate the persistence of Commissioning information central to the cost benefit analyses routinely performed for Commissioning measures.
Jonathan M Curtin - One of the best experts on this subject based on the ideXlab platform.
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development and testing of an automated Building Commissioning analysis tool abcat
Energy and Buildings, 2012Co-Authors: John Bynum, D E Claridge, Jonathan M CurtinAbstract:Abstract Experience has shown that Buildings on average may consume 20% more energy than required for occupant comfort which by one estimate leads to $18 billion wasted annually on energy costs in commercial Buildings in the United States. Experience and large scale studies of the benefits of Commissioning have shown the effectiveness of these services in improving the energy efficiency of commercial Buildings. While Commissioning services do help reduce energy consumption and improve performance of Buildings, the benefits of the Commissioning tend to degrade over time. In order to prolong the benefits of Commissioning, a prototype fault detection and diagnostic tool intended to aid in reducing excess energy consumption known as an Automated Building Commissioning Analysis Tool (ABCAT) has been developed and tested. ABCAT is a first principles based whole Building level top down tool which does not require the level of expertise and investment associated with detailed component level methods. ABCAT utilizes a calibrated mathematical model to predict energy consumption for given weather conditions. A detailed description of the methodology is presented along with testing results. Results from retrospective and live test case applications are presented where the tool was used to successfully identify significant energy consumption deviations.
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development and testing of an automated Building Commissioning analysis tool abcat
ASME 2010 4th International Conference on Energy Sustainability Volume 1, 2010Co-Authors: John Bynum, D E Claridge, Jonathan M CurtinAbstract:Experience has shown that Buildings on average may consume 20% more energy than required for occupant comfort which by one estimate leads to $18 billion wasted annually on energy costs in commercial Buildings in the United States. Experience and large scale studies of the benefits of Commissioning have shown the effectiveness of these services in improving the energy efficiency of commercial Buildings. While Commissioning services do help reduce energy consumption and improve performance of Buildings, the benefits of the Commissioning tend to degrade over time. In order to prolong the benefits of Commissioning, a prototype fault detection and diagnostic (FDD) tool intended to aid in reducing excess energy consumption known as an Automated Building Commissioning Analysis Tool (ABCAT) has been developed. ABCAT is a first principles based whole Building level top down FDD tool which does not require the level of expertise and money often associated with more detailed component level methods. The model based ABCAT tool uses the ASHRAE Simplified Energy Analysis Procedure (SEAP) which requires a smaller number of inputs than more sophisticated simulation methods such as EnergyPlus or DOE-2. ABCAT utilizes a calibrated mathematical model, white box method, to predict energy consumption for given weather conditions. A detailed description of the methodology is presented along with test application results from more than 20 Building years worth of retrospective applications and greater than five Building years worth of live test case applications. In this testing, the ABCAT tool was used to successfully identify 24 significant energy consumption deviations in five retrospective applications and five significant energy consumption deviations in four live applications.Copyright © 2010 by ASME
John Bynum - One of the best experts on this subject based on the ideXlab platform.
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development and testing of an automated Building Commissioning analysis tool abcat
Energy and Buildings, 2012Co-Authors: John Bynum, D E Claridge, Jonathan M CurtinAbstract:Abstract Experience has shown that Buildings on average may consume 20% more energy than required for occupant comfort which by one estimate leads to $18 billion wasted annually on energy costs in commercial Buildings in the United States. Experience and large scale studies of the benefits of Commissioning have shown the effectiveness of these services in improving the energy efficiency of commercial Buildings. While Commissioning services do help reduce energy consumption and improve performance of Buildings, the benefits of the Commissioning tend to degrade over time. In order to prolong the benefits of Commissioning, a prototype fault detection and diagnostic tool intended to aid in reducing excess energy consumption known as an Automated Building Commissioning Analysis Tool (ABCAT) has been developed and tested. ABCAT is a first principles based whole Building level top down tool which does not require the level of expertise and investment associated with detailed component level methods. ABCAT utilizes a calibrated mathematical model to predict energy consumption for given weather conditions. A detailed description of the methodology is presented along with testing results. Results from retrospective and live test case applications are presented where the tool was used to successfully identify significant energy consumption deviations.
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development and testing of an automated Building Commissioning analysis tool abcat
ASME 2010 4th International Conference on Energy Sustainability Volume 1, 2010Co-Authors: John Bynum, D E Claridge, Jonathan M CurtinAbstract:Experience has shown that Buildings on average may consume 20% more energy than required for occupant comfort which by one estimate leads to $18 billion wasted annually on energy costs in commercial Buildings in the United States. Experience and large scale studies of the benefits of Commissioning have shown the effectiveness of these services in improving the energy efficiency of commercial Buildings. While Commissioning services do help reduce energy consumption and improve performance of Buildings, the benefits of the Commissioning tend to degrade over time. In order to prolong the benefits of Commissioning, a prototype fault detection and diagnostic (FDD) tool intended to aid in reducing excess energy consumption known as an Automated Building Commissioning Analysis Tool (ABCAT) has been developed. ABCAT is a first principles based whole Building level top down FDD tool which does not require the level of expertise and money often associated with more detailed component level methods. The model based ABCAT tool uses the ASHRAE Simplified Energy Analysis Procedure (SEAP) which requires a smaller number of inputs than more sophisticated simulation methods such as EnergyPlus or DOE-2. ABCAT utilizes a calibrated mathematical model, white box method, to predict energy consumption for given weather conditions. A detailed description of the methodology is presented along with test application results from more than 20 Building years worth of retrospective applications and greater than five Building years worth of live test case applications. In this testing, the ABCAT tool was used to successfully identify 24 significant energy consumption deviations in five retrospective applications and five significant energy consumption deviations in four live applications.Copyright © 2010 by ASME
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Final Report on Retrospective Testing and Application of an Automated Building Commissioning Analysis Tool (ABCAT)
2009Co-Authors: John Bynum, Guanjing Lin, David E. ClaridgeAbstract:This report was prepared by the Energy Systems Laboratory (ESL) for the Lawrence Berkeley National Laboratory (LBNL). Neither the ESL or LBNL or any of their employees, makes any warranty, express or implies or assumes any legal liability or responsibility for the accuracy, completeness or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe on privately owned rights. This report has not been approved or disapproved by the LBNL nor has the LBNL passed upon the accuracy or adequacy of the information in this report.
Victor Saade - One of the best experts on this subject based on the ideXlab platform.
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positive energy Building with pv facade production and electrical storage designed by the swiss team for the u s department of energy solar decathlon 2017
Energy Procedia, 2017Co-Authors: Philippe Couty, Moncef J Lalou, Peter Cuony, Samuel Cotture, Victor SaadeAbstract:Abstract In the framework of the Solar Decathlon 2017 in Denver, Colorado, the Swiss team will propose a community house powered by solar energy and smart grid interaction. Thanks to an integrated design with multi-oriented facades, which were boosted by customized opening gates equipped with c-Si PV panels and power optimizers, a net positive energy Building has been realized. An energy management system has been implemented to monitor and control the 9.715 kWp PV system and the electrical storage of 10.8 kWh capacity. The realized microgrid has been modelled and simulations have been performed using hourly meteorological data. As first results, measured BIPV production during the Building Commissioning has been compared with the simulated production at Fribourg.
Omer Akin - One of the best experts on this subject based on the ideXlab platform.
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embedded Commissioning of Building systems
2011Co-Authors: Omer Akin, Sanghoon Lee, Tanyel TurkaslanbulbulAbstract:Part I: Introduction to Building Evaluation - The Need for Building Evaluation. Embedded Commissioning. Part II: Elaboration - Institutional Structure and Practice of Building Commissioning in the Digital Era. Product and Process Models for Building Commissioning. Building Information Modeling (BIM): Current Practices in Building Evaluation, Models and Updates. AS-Is Modeling: Capturing Existing Spatial Conditions Using Laser Scanners. Standards: IFC and STEP. Mapping Between Process Product Models: Challenges and Opportunities. Communication Protocols and Data Accessibility. Building Codes. Part III: The Future - Sensors. Value Based Design. Field Tools and Augmented Reality Technology. JIT Technology and Wearable Computers. Future of Embedded Commissioning: What is Possible in 20 Years?
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Ontology Development for Low-Energy Building Embedded Commissioning
2009Co-Authors: Kwang Jun Lee, Burcu Akinci, James H. Garrett, Omer Akin, Steven T. BushbyAbstract:This paper presents the results of initial work in developing an ontology for improving information exchange and automation in Building system Commissioning practices. In our previous research dealing with the derivation of product models from Building Commissioning process models, we found that there is a need to categorize and classify information items, which are available in Commissioning process descriptions. In addition, the relationship between these items should be clearly defined to establish a topological relationship between items necessary for specifying product models. Ontology development is the way to categorize and classify domain knowledge information and items into inter-related concepts. Ontology assembles information in the form of concept hierarchies (taxonomies), axioms, and semantic relationships, which allow natural language to be presented unambiguously. A glossary (a lower form of ontology) specific to Building Commissioning tasks was developed as a first step. In the second step, an ontology for use in Commissioning software applications was developed. EXISTING ONTOLOGIES IN AEC/FM
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The Development of an Augmented Reality-Based Data Visualization System for Commissioning of Air Handling Units
2007Co-Authors: Sanghoon Lee, Muhsine Tanyel Turkaslan-bulbul, Omer AkinAbstract:This paper discusses the development of an Augmented Reality-based data visualization system that supports Commissioning HVAC systems during construction, occupancy, and operations phases. Commissioning is a process that generates a significant amount of data. Therefore a Building Commissioning data model has been developed to effectively manage such data and facilitate the computational support for Commissioning work. One of the challenges of this model-based approach has been to reduce the inefficiency caused by the disparate and multiple attributes of the Building Commissioning data. In order to meet this challenge, we aim to develop an Augmented Reality-based data visualization interface which can automatically detects a piece of equipment and visualizes all necessary data relevant to the particular equipment for the Commissioning procedures. This paper focuses on the functional requirements and system architecture needed to design such an interface.
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The virtual-augmented-reality environment for Building commission: case study
2005Co-Authors: S. H. Lee, Omer AkinAbstract:This paper presents a Virtual-Augmented-Reality Environment (VARE) which is an augmented-reality (AR) system integrated with a virtual-reality environment. The system has been developed to support the Building Commissioning (BC) process. The CAVE, a projection-based virtual reality system, is used as an immersive interactive environment in which the Building being commissioned is modeled and displayed in accordance with the user’s input. The AR system is a computer vision-based visualization system specially designed for displaying BC data. We also investigated RFID (Radio Frequency Identification Device) technology as an alternative object tracking approach. A series of case studies were conducted to verify the performance of the proposed system with various kinds of information commonly being generated during the BC process. VARE would be well suited to a training program for prospective operators. The system is cost-effective and provides the user with compatibility with other software packages that support the Industry Foundation Classes (IFC).
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Embedded Commissioning for Building Design
2004Co-Authors: Omer Akin, Burcu Akinci, James H. Garrett, Muhsine Tanyel Turkaslan-bulbul, I. Gursel, H. WangAbstract:Building Commissioning is an important new area of practice and research in the industry. It has emerged, during the last 25 years, as the central phase of Building delivery that is responsible for verifying design intent. Currently, it is rapidly becoming the performance verification tool in HVAC design and LEED (Leadership in Energy and Environmental Design) certification in the USA. Building Commissioning is a multi-phase process that ensures the interacting systems in a Building are properly installed and operating. In the early phases of facility design, Commissioning is concerned with whether the program and the design are delivering the owner’s desired functionality. During the construction process, Commissioning is concerned with ensuring that the performance of the selected Building equipment agrees with the design specifications and delivers the intended functionality. The process of Building Commissioning tends to generate large amounts of data, much of which needs to be shared across other facility delivery phases. We view Commissioning as a Building delivery embedded process that persistently verifies and validates design intent throughout the Building lifecycle. The Embedded Commissioning Model (ECM), which is described in this paper, combines the processes of Commissioning and Building life-cycle in order to provide a framework for managing the information exchange between them. Here, the role of Commissioning is to complement each of the lifecycle phases and their interactions through timely Building system evaluation. The primary objective of our study is to investigate the computability of Embedded Commissioning (EC) for HVAC systems. Our approach focuses on exploring the representational needs of the EC process and the management of EC data. Here, we concentrate on how the EC process works? What kind of information is produced; and what type of attributes can be defined? The output of this study is used to develop a proof of concept prototype software that supports the decision making process in EC.
