<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Wei Wang</style></author><author><style face="normal" font="default" size="100%">Jiayu Chen</style></author><author><style face="normal" font="default" size="100%">Tianzhen Hong</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Modeling occupancy distribution in large spaces with multi-feature classification algorithm</style></title><secondary-title><style face="normal" font="default" size="100%">Building and Environment</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">energy efficiency</style></keyword><keyword><style  face="normal" font="default" size="100%">HVAC loads</style></keyword><keyword><style  face="normal" font="default" size="100%">multi-feature classification algorithm</style></keyword><keyword><style  face="normal" font="default" size="100%">occupancy distribution</style></keyword><keyword><style  face="normal" font="default" size="100%">occupancy-based control</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2018</style></year></dates><volume><style face="normal" font="default" size="100%">137</style></volume><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;Occupancy information enables robust and flexible control of heating, ventilation, and air-conditioning (HVAC) systems in buildings. In large spaces, multiple HVAC terminals are typically installed to provide cooperative services for different thermal zones, and the occupancy information determines the cooperation among terminals. However, a person count at room-level does not adequately optimize HVAC system operation due to the movement of occupants within the room that creates uneven load distribution. Without accurate knowledge of the occupants&#039; &lt;a title=&quot;Learn more about spatial distribution&quot; href=&quot;https://www.sciencedirect.com/topics/earth-and-planetary-sciences/spatial-distribution&quot; target=&quot;_blank&quot;&gt;spatial distribution&lt;/a&gt;, the uneven distribution of occupants often results in under-cooling/heating or over-cooling/heating in some thermal zones. Therefore, the lack of high-resolution occupancy distribution is often perceived as a bottleneck for future improvements to HVAC operation efficiency. To fill this gap, this study proposes a multi-feature k-Nearest-Neighbors (k-NN) classification algorithm to extract occupancy distribution through reliable, low-cost Bluetooth Low Energy (BLE) networks. An on-site experiment was conducted in a typical office of an institutional building to demonstrate the proposed methods, and the experiment outcomes of three case studies were examined to validate detection accuracy. One method based on City Block Distance (CBD) was used to measure the distance between detected occupancy distribution and ground truth and assess the results of occupancy distribution. The results show the accuracy when CBD = 1 is over 71.4% and the accuracy when CBD = 2 can reach up to 92.9%.&lt;/p&gt;</style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>27</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Rongpeng Zhang</style></author><author><style face="normal" font="default" size="100%">Tianzhen Hong</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Modeling of HVAC Operational Faults in Building Performance Simulation</style></title></titles><keywords><keyword><style  face="normal" font="default" size="100%">energy performance</style></keyword><keyword><style  face="normal" font="default" size="100%">energyplus</style></keyword><keyword><style  face="normal" font="default" size="100%">hvac system</style></keyword><keyword><style  face="normal" font="default" size="100%">Modeling and simulation</style></keyword><keyword><style  face="normal" font="default" size="100%">Operational fault</style></keyword><keyword><style  face="normal" font="default" size="100%">Thermal comfort  </style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2017</style></year></dates><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p class=&quot;06BodyMaintext&quot;&gt;Operational faults are common in the heating, ventilating, and air conditioning (HVAC) systems of existing buildings, leading to a decrease in energy efficiency and occupant comfort. Various fault detection and diagnostic methods have been developed to identify and analyze HVAC operational faults at the component or subsystem level. However, current methods lack a holistic approach to predicting the overall impacts of faults at the building level—an approach that adequately addresses the coupling between various operational components, the synchronized effect between simultaneous faults, and the dynamic nature of fault severity. This study introduces the novel development of a fault-modeling feature in EnergyPlus which fills in the knowledge gap left by previous studies. This paper presents the design and implementation of the new feature in EnergyPlus and discusses in detail the fault-modeling challenges faced. The new fault-modeling feature enables EnergyPlus to quantify the impacts of faults on building energy use and occupant comfort, thus supporting the decision making of timely fault corrections. Including actual building operational faults in energy models also improves the accuracy of the baseline model, which is critical in the measurement and verification of retrofit or commissioning projects. As an example, EnergyPlus version 8.6 was used to investigate the impacts of a number of typical operational faults in an office building across several U.S. climate zones. The results demonstrate that the faults have significant impacts on building energy performance as well as on occupant thermal comfort. Finally, the paper introduces future development plans for EnergyPlus fault-modeling capability.&lt;/p&gt;</style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">David Blum</style></author><author><style face="normal" font="default" size="100%">Michael Wetter</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">MPCPy: An Open-Source Software Platform for Model Predictive Control in Buildings</style></title><secondary-title><style face="normal" font="default" size="100%">Proceedings of the 15th IBPSA Conference: Building Simulation 2017</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Model predictive control (MPC)</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2017</style></year><pub-dates><date><style  face="normal" font="default" size="100%">08/2017</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://www.ibpsa.org/proceedings/BS2017/BS2017_351.pdf</style></url></web-urls></urls><pub-location><style face="normal" font="default" size="100%">San Francisco</style></pub-location><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p class=&quot;Body&quot;&gt;Within the last decade, needs for building control systems that reduce cost, energy, or peak demand, and that facilitate building-grid integration, district-energy system optimization, and occupant interaction, while maintaining thermal comfort and indoor air quality, have come about.&amp;nbsp; Current PID and schedule-based control systems are not capable of fulfilling these needs, while Model Predictive Control (MPC) could.&amp;nbsp; Despite the critical role MPC-enabled buildings can play in future energy infrastructures, widespread adoption of MPC within the building industry has yet to occur.&amp;nbsp; To address barriers associated with system setup and configuration, this paper introduces an open-source software platform that emphasizes use of self-tuning adaptive models, usability by non-experts of MPC, and a flexible architecture that enables application across projects.&lt;/p&gt;</style></abstract><custom2><style face="normal" font="default" size="100%">LBNL-2001226</style></custom2></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Rongpeng Zhang</style></author><author><style face="normal" font="default" size="100%">Tianzhen Hong</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Modeling and Simulation of Operational Faults of HVAC Systems Using Energyplus</style></title></titles><dates><year><style  face="normal" font="default" size="100%">2016</style></year></dates><abstract><style face="normal" font="default" size="100%">&lt;p&gt;HVAC operations play a significant role among various driving factors to improve energy performance of buildings. Extensive researches have been conducted on the design efficiencies and control strategies of HVAC system, but very few focused on the impacts of its operational faults on the building energy efficiency. Modeling and simulation of operational faults can lead to better understandings of the fault impacts and thus support decision making of timely fault corrections which can further benefit the efficient system operation, improve the indoor thermal comfort, and prolong the equipment service life. Fault modeling is also critical to achieve more accurate and reliable model calibrations. This paper introduces the modeling and simulation of operational faults using EnergyPlus, a comprehensive whole building performance simulation tool. The paper discusses the challenges of operational fault modeling, and compares three approaches to simulate operational faults using EnergyPlus. The paper also introduces the latest development of native fault objects within EnergyPlus. As an example, EnergyPlus version 8.4 is used to investigate the impacts of the integrated thermostat and humidistat faults in a typical office building across several U.S. climate zones. The results demonstrate that the faults create significant impacts on the building energy performance as well as occupant thermal comfort. At last, the paper introduces the future development plan of EnergyPlus for the further improvement of its fault modeling capability.&lt;/p&gt;</style></abstract><custom2><style face="normal" font="default" size="100%">LBNL-1004498</style></custom2></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Michael Wetter</style></author><author><style face="normal" font="default" size="100%">Wangda Zuo</style></author><author><style face="normal" font="default" size="100%">Thierry Stephane Nouidui</style></author><author><style face="normal" font="default" size="100%">Xiufeng Pang</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Modelica Buildings Library</style></title></titles><dates><year><style  face="normal" font="default" size="100%">2015</style></year></dates><custom2><style face="normal" font="default" size="100%">LBNL-1002944</style></custom2></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Tobias Maile</style></author><author><style face="normal" font="default" size="100%">Mangesh Basarkar</style></author><author><style face="normal" font="default" size="100%">James O&#039;Donnell</style></author><author><style face="normal" font="default" size="100%">Philip Haves</style></author><author><style face="normal" font="default" size="100%">Kevin Settlemyre</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Mapping Hvac Systems for Simulation In EnergyPlus</style></title><secondary-title><style face="normal" font="default" size="100%">SimBuild 2012 IBPSA Conference</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2012</style></year><pub-dates><date><style  face="normal" font="default" size="100%">07/2012</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Madison, WI, USA</style></pub-location><abstract><style face="normal" font="default" size="100%">&lt;p&gt;For building energy simulation tools to be accessible to designers, tool interfaces should present a conventional view of HVAC systems to the user, and then map this view to the internal data model used in the tool. The paper outlines a process that enables design engineers to create HVAC system representations using industry standard terminology and system, icon and typological representations and convert that unified representation into the format required by the whole building energy simulation tool EnergyPlus. This paper describes each stage of the conversion process, which involves transformations between the following representations: 1) engineer&#039;s representation, 2) component connectivity representation, 3) representation in the internal data model used in the Simergy graphical user interface for EnergyPlus, and 4) EnergyPlus representation.&lt;/p&gt;&lt;p&gt;The paper also describes mappings between these representations and the development of a rule-based validation and assignment framework required to implement that mapping. In addition, the paper describes the implementation of this process in Simergy.&lt;/p&gt;</style></abstract><custom2><style face="normal" font="default" size="100%">LBNL-5565E</style></custom2></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>27</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Shankar Earni</style></author><author><style face="normal" font="default" size="100%">Spencer Woodworth</style></author><author><style face="normal" font="default" size="100%">Xiufeng Pang</style></author><author><style face="normal" font="default" size="100%">Jorge Hernandez-Maldonado</style></author><author><style face="normal" font="default" size="100%">Rongxin Yin</style></author><author><style face="normal" font="default" size="100%">Liping Wang</style></author><author><style face="normal" font="default" size="100%">Steve E. Greenberg</style></author><author><style face="normal" font="default" size="100%">John Fiegel</style></author><author><style face="normal" font="default" size="100%">Alma Rubalcava</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Monitoring-based HVAC Commissioning of an Existing Office Building for Energy Efficiency</style></title></titles><keywords><keyword><style  face="normal" font="default" size="100%">benchmarking</style></keyword><keyword><style  face="normal" font="default" size="100%">commissioning</style></keyword><keyword><style  face="normal" font="default" size="100%">energyplus</style></keyword><keyword><style  face="normal" font="default" size="100%">fault detection and diagnostics</style></keyword><keyword><style  face="normal" font="default" size="100%">functional testing</style></keyword><keyword><style  face="normal" font="default" size="100%">trend data</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2012</style></year><pub-dates><date><style  face="normal" font="default" size="100%">10/2012</style></date></pub-dates></dates><abstract><style face="normal" font="default" size="100%">&lt;p&gt;The performance of Heating, Ventilation and Air Conditioning (HVAC) systems may fail to satisfy design expectations due to improper equipment installation, equipment degradation, sensor failures, or incorrect control sequences. Commissioning identifies and implements cost-effective operational and maintenance measures in buildings to bring them up to the design intent or optimum operation. An existing office building is used as a case study to demonstrate the process of commissioning. Building energy benchmarking tools are applied to evaluate the energy performance for screening opportunities at the whole building level. A large natural gas saving potential was indicated by the building benchmarking results. Faulty operations in the HVAC systems, such as improper operations of air-side economizers, simultaneous heating and cooling, and ineffective optimal start, were identified through trend data analyses and functional testing. The energy saving potential for each commissioning measure is quantified with a calibrated building simulation model. An actual energy saving of 10% was realized after the implementations of cost-effective measures.&lt;/p&gt;</style></abstract><custom2><style face="normal" font="default" size="100%">LBNL-5940E</style></custom2></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Mangesh Basarkar</style></author><author><style face="normal" font="default" size="100%">Philip Haves</style></author><author><style face="normal" font="default" size="100%">Xiufeng Pang</style></author><author><style face="normal" font="default" size="100%">Liping Wang</style></author><author><style face="normal" font="default" size="100%">Tianzhen Hong</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Modeling and simulation of HVAC faults in EnergyPlus</style></title><secondary-title><style face="normal" font="default" size="100%">Building Simulation 2011</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">advanced building software: energyplus</style></keyword><keyword><style  face="normal" font="default" size="100%">building simulation</style></keyword><keyword><style  face="normal" font="default" size="100%">energyplus</style></keyword><keyword><style  face="normal" font="default" size="100%">faults</style></keyword><keyword><style  face="normal" font="default" size="100%">fouling</style></keyword><keyword><style  face="normal" font="default" size="100%">modeling</style></keyword><keyword><style  face="normal" font="default" size="100%">sensor offset</style></keyword><keyword><style  face="normal" font="default" size="100%">simulation research group</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2011</style></year><pub-dates><date><style  face="normal" font="default" size="100%">11/2011</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Australia</style></pub-location><language><style face="normal" font="default" size="100%">eng</style></language></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Mangesh Basarkar</style></author><author><style face="normal" font="default" size="100%">Xiufeng Pang</style></author><author><style face="normal" font="default" size="100%">Liping Wang</style></author><author><style face="normal" font="default" size="100%">Tianzhen Hong</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Modeling and simulation of HVAC Results in EnergyPlus</style></title></titles><dates><year><style  face="normal" font="default" size="100%">2011</style></year><pub-dates><date><style  face="normal" font="default" size="100%">11/2011</style></date></pub-dates></dates><custom2><style face="normal" font="default" size="100%">LBNL-5564E</style></custom2></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>10</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Michael Wetter</style></author><author><style face="normal" font="default" size="100%">Wangda Zuo</style></author><author><style face="normal" font="default" size="100%">Thierry Stephane Nouidui</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Modeling of Heat Transfer in Rooms in the Modelica &quot;Buildings&quot; Library</style></title><secondary-title><style face="normal" font="default" size="100%">12th Conference of International Building Performance Ssimulation Association</style></secondary-title><tertiary-title><style face="normal" font="default" size="100%">Proceedings of Building Simulation 2011</style></tertiary-title></titles><dates><year><style  face="normal" font="default" size="100%">2011</style></year><pub-dates><date><style  face="normal" font="default" size="100%">11/2011</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Sydney, Australia</style></pub-location><pages><style face="normal" font="default" size="100%">1096-1103</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><custom2><style face="normal" font="default" size="100%">LBNL-5563E</style></custom2></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Torrens, J. Ignacio</style></author><author><style face="normal" font="default" size="100%">Marcus Keane</style></author><author><style face="normal" font="default" size="100%">Andrea Costa</style></author><author><style face="normal" font="default" size="100%">James O&#039;Donnell</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Multi-Criteria Optimisation using Past, Real Time and Predictive Performance Benchmarks</style></title><secondary-title><style face="normal" font="default" size="100%">Simulation Modelling Practice and Theory</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2011</style></year><pub-dates><date><style  face="normal" font="default" size="100%">04/2011</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">19</style></volume><pages><style face="normal" font="default" size="100%">1258-1265</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><issue><style face="normal" font="default" size="100%">4</style></issue><section><style face="normal" font="default" size="100%">1258</style></section></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>10</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Yudong Ma</style></author><author><style face="normal" font="default" size="100%">Francesco Borrelli</style></author><author><style face="normal" font="default" size="100%">Brandon Hencey</style></author><author><style face="normal" font="default" size="100%">Brian E. Coffey</style></author><author><style face="normal" font="default" size="100%">Sorin Bengea</style></author><author><style face="normal" font="default" size="100%">Philip Haves</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Model Predictive Control of Thermal Energy Storage in Building Cooling Systems</style></title><secondary-title><style face="normal" font="default" size="100%">American Control Conference</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2010</style></year><pub-dates><date><style  face="normal" font="default" size="100%">06/2010</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Baltimore, Maryland, USA</style></pub-location><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">A model-based predictive control (MPC) is designed for optimal thermal energy storage in building cooling systems. We focus on buildings equipped with a water tank used for actively storing cold water produced by a series of chillers. Typically the chillers are operated at night to recharge the storage tank in order to meet the building demands on the following day. In this paper, we build on our previous work, improve the building load model, and present experimental results. The experiments show that MPC can achieve reductionin the central plant electricity cost and improvement of its efficiency.</style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Massieh Najafi</style></author><author><style face="normal" font="default" size="100%">David M. Auslander</style></author><author><style face="normal" font="default" size="100%">Peter L. Bartlett</style></author><author><style face="normal" font="default" size="100%">Philip Haves</style></author><author><style face="normal" font="default" size="100%">Michael D. Sohn</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Modeling and Measurement Constraints in Fault Diagnostics for HVAC Systems</style></title><secondary-title><style face="normal" font="default" size="100%">ASME Journal of Dynamic Systems, Measurement, and Controls</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2010</style></year></dates><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Many studies have shown that energy savings of five to fifteen percent are achievable in commercial buildings by detecting and correcting building faults, and optimizing building control systems. However,in spite of good progress in developing tools for determining HVAC diagnostics, methods to detect faults in HVAC systems are still generally undeveloped. Most approaches use numerical filtering or parameter estimation methods to compare data from energy meters and building sensors to predictions from mathematical or statistical models. They are effective when models are relatively accurate and data contain few errors. In this paper, we address the case where models are imperfect and data are variable, uncertain, and can contain error. We apply a Bayesian updating approach that is systematic in managing and accounting for most forms of model and data errors. The proposed method uses both knowledge of first principle modeling and empirical results to analyze the system performance within the boundaries defined by practical constraints. We demonstrate the approach by detecting faults in commercial building air handling units. We find that the limitations that exist in air handling unit diagnostics due to practical constraints can generally be effectively addressed through the proposed approach.</style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>10</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Michael Wetter</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Modelica Library for Building Heating, Ventilation and Air-Conditioning Systems</style></title><secondary-title><style face="normal" font="default" size="100%">Proceedings of the 7th International Modelica Conference</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2009</style></year><pub-dates><date><style  face="normal" font="default" size="100%">09/2009</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://www.ep.liu.se/ecp_article/index.en.aspx?issue=043;article=44</style></url></web-urls></urls><edition><style face="normal" font="default" size="100%">44</style></edition><pub-location><style face="normal" font="default" size="100%">Como, Italy</style></pub-location><volume><style face="normal" font="default" size="100%">43</style></volume><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;The Buildings library is a freely available Modelica library that is based on Modelica.Fluid. It contains component models for building heating, ventilation and air conditioning systems. It also contains an interface that allows co-simulation with the Ptolemy software framework for concurrent, real-time, embedded systems developed by the University of California at Berkeley. The primary applications are controls design, energy analysis and model-based operation. The library has been used to model hydronic space heating systems, variable air volume flow systems and it has been linked to the EnergyPlus building energy simulation program for co-simulation using Ptolemy II. The library contains dynamic and steady-state component models that are applicable for analyzing fast transients when designing control algorithms and for conducting annual simulations when assessing energy performance. For most models, dimensional analysis is used to compute the performance for operating points that differ from nominal conditions. This allows parameterizing models in the absence of detailed geometrical information which is often impractical to obtain during the conceptual design phase of building systems.&lt;/p&gt;</style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Michael Wetter</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">A Modelica-based model library for building energy and control systems</style></title><secondary-title><style face="normal" font="default" size="100%">Proceedings of the 11th IBPSA Conference</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">modelica</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2009</style></year><pub-dates><date><style  face="normal" font="default" size="100%">07/2009</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://www.ibpsa.org/proceedings/BS2009/BS09_0652_659.pdf</style></url></web-urls></urls><pub-location><style face="normal" font="default" size="100%">Glasgow, Scotland</style></pub-location><pages><style face="normal" font="default" size="100%">652-659</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;This paper describes an open-source library with component models for building energy and control systems that is based on Modelica, an equation-based object oriented language that is well positioned to become the standard for modeling of dynamic systems in various industrial sectors. The library is currently developed to support computational science and engineering for innovative building energy and control systems. Early applications will include controls design and analysis, rapid prototyping to support innovation of new building systems and the use of models during operation for controls, fault detection and diagnostics. This paper discusses the motivation for selecting an equation-based object-oriented language. It presents the architecture of the library and explains how base model scan be used to rapidly implement new models. To demonstrate the capability of analyzing novel energy and control systems, the paper closes with an example where we compare the dynamic performance of a conventional hydronic heating system with thermostatic radiator valves to an innovative heating system. In the new system, instead of a centralized circulation pump, each of the 18 radiators has a pump whose speed is controlled using a room temperature feedback loop, and the temperature of the boiler is controlled based on the speed of the radiator pump. All flows are computed by solving for the pressure distribution in the piping network, and the controls include continuous and discrete time controls.&lt;/p&gt;</style></abstract><custom2><style face="normal" font="default" size="100%">LBNL-2739E</style></custom2></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Michael Wetter</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Modelica-based Modeling and Simulation to Support Research and Development in Building Energy and Control Systems</style></title><secondary-title><style face="normal" font="default" size="100%">Journal of Building Performance Simulation</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">modelica</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2009</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://www.informaworld.com/smpp/section?content=a911401852&amp;fulltext=713240928</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">2</style></volume><pages><style face="normal" font="default" size="100%">143-161</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Traditional building simulation programs possess attributes that make them difficult to use for the design and analysis of building energy and control systems and for the support of model-based research and development of systems that may not already be implemented in these programs. This paper presents characteristic features of such applications, and it shows how equation-based object-oriented modeling can meet requirements that arise in such applications. Next, the implementation of an open-source component model library for building energy systems is presented. The library has been developed using the equation-based object-oriented Modelica modeling language. Technical challenges of modeling and simulating such systems are discussed. Research needs are presented to make this technology accessible to user groups that have more stringent requirements with respect to the numerical robustness of simulation than a research community may have. Two examples are presented in which models from the here described library were used. The first example describes the design of a controller for a nonlinear model of a heating coil using model reduction and frequency domain analysis. The second example describes the tuning of control parameters for a static pressure reset controller of a variable air volume flow system. The tuning has been done by solving a non-convex optimization problem that minimizes fan energy subject to state constraints.</style></abstract><issue><style face="normal" font="default" size="100%">2</style></issue><custom2><style face="normal" font="default" size="100%">LBNL-2740E</style></custom2></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>10</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Dean Nelson</style></author><author><style face="normal" font="default" size="100%">Brian Day</style></author><author><style face="normal" font="default" size="100%">Geoffrey C. Bell</style></author><author><style face="normal" font="default" size="100%">Prajesh Bhattacharya</style></author><author><style face="normal" font="default" size="100%">Mike Ryan</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">“The Monitoring,” Panel: Chill-Off</style></title><secondary-title><style face="normal" font="default" size="100%">Silicon Valley Leadership Group Data Center Energy Efficiency Summit</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2009</style></year><pub-dates><date><style  face="normal" font="default" size="100%">10/2009</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Sunnyvale, CA</style></pub-location><language><style face="normal" font="default" size="100%">eng</style></language></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Torrens, J. Ignacio</style></author><author><style face="normal" font="default" size="100%">Marcus Keane</style></author><author><style face="normal" font="default" size="100%">James O&#039;Donnell</style></author><author><style face="normal" font="default" size="100%">Andrea Costa</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Multi-criteria optimisation using past, historical, real time and predictive performance benchmarks</style></title><secondary-title><style face="normal" font="default" size="100%">SEEP 2009: 3rd International Conference on Sustainable Energy &amp; Environmental Protection</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2009</style></year></dates><language><style face="normal" font="default" size="100%">eng</style></language></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Michael Wetter</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">A Modelica-Based Model Library for Building Energy and Control Systems</style></title><secondary-title><style face="normal" font="default" size="100%">Building Simulation &#039;09</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2008</style></year><pub-dates><date><style  face="normal" font="default" size="100%">07/2008</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Glasgow, Scotland</style></pub-location><language><style face="normal" font="default" size="100%">eng</style></language></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Michael Wetter</style></author><author><style face="normal" font="default" size="100%">Philip Haves</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">A Modular Building Controls Virtual Test Bed for the Integration of Heterogeneous Systems</style></title><secondary-title><style face="normal" font="default" size="100%">SimBuild 2008, July 30-August 1</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2008</style></year><pub-dates><date><style  face="normal" font="default" size="100%">08/2008</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Berkeley, CA</style></pub-location><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;This paper describes the Building Controls Virtual Test Bed (BCVTB) that is currently under development at Lawrence Berkeley National Laboratory. An earlier prototype linked EnergyPlus with controls hardware through embedded SPARK models and demonstrated its value in more cost-effective envelope design and improved controls sequences for the San Francisco Federal Building. The BCVTB presented here is a more modular design based on a middleware that we built using Ptolemy II, a modular software environment for design and analysis of heterogeneous systems. Ptolemy II provides a graphical model building environment, synchronizes the exchanged data and visualizes the system evolution during run-time. Our additions to Ptolemy II allow users to couple to Ptolemy II a prototype version of EnergyPlus, MATLAB/Simulink or other simulation programs for data exchange during run-time. In future work we will also implement a BACnet interface that allows coupling BACnet compliant building automation systems to Ptolemy II. We will present the architecture of the BCVTB and explain how users can add their own simulation programs to the BCVTB. We will then present an example application in which the building envelope and the HVAC system was simulated in EnergyPlus, the supervisory control logic was simulated in MATLAB/Simulink and Ptolemy II was used to exchange data during run-time and to provide real-time visualization as the simulation progresses.&lt;/p&gt;</style></abstract><custom2><style face="normal" font="default" size="100%">LBNL-650E</style></custom2></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Peng Xu</style></author><author><style face="normal" font="default" size="100%">Yu Joe Huang</style></author><author><style face="normal" font="default" size="100%">Ruidong Jin</style></author><author><style face="normal" font="default" size="100%">Guoxiong Yang</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Measured energy performance of a US-China demonstration energy-efficient commercial building</style></title><secondary-title><style face="normal" font="default" size="100%">2007 ASHRAE Winter Meeting, January 27-31, 2007</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2006</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/2007</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Dallas, TX</style></pub-location><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;In July 1998, the U.S. Department of Energy (USDOE) and China&#039;s Ministry of Science of Technology (MOST) signed a Statement of Work (SOW) to collaborate on the design and construction of an energyefficient demonstration office building and design center to be located in Beijing. The proposed 13,000 m&lt;sup&gt;2&lt;/sup&gt; (140,000 ft&lt;sup&gt;2&lt;/sup&gt;) nine-story office building would use U.S. energy-efficient materials, space-conditioning systems, controls, and design principles that were judged to be widely replicable throughout China. The SOW stated that China would contribute the land and provide for the costs of the base building, while the U.S. would be responsible for the additional (or marginal) costs associated with the package of energy efficiency andrenewable energy improvements to the building. The project was finished and the building occupied in 2004.&lt;/p&gt;&lt;p&gt;Using DOE-2 to analyze the energy performance of the as-built building, the building obtained 44 out of 69 possible points according to the Leadership in Energy and Environmental Design (LEED) rating, including the full maximum of 10 points in the energy performance section. The building achieved a LEED Gold rating, the first such LEED-rated office building in China, and is 60% more efficient than ASHRAE 90.1-1999. The utility data from the first year&#039;s operation match well the analysis results, providing that adjustments are made for unexpected changes in occupancy and operations. Compared with similarly equipped office buildings in Beijing, this demonstration building uses 60% less energy per floor area. However, compared to conventional office buildings with less equipment and window air-conditioners, the building uses slightly more energy per floor area.&lt;/p&gt;</style></abstract><custom1><style face="normal" font="default" size="100%">&lt;p&gt;Simulation Research Group&lt;/p&gt;</style></custom1><custom2><style face="normal" font="default" size="100%">LBNL-60978</style></custom2></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>10</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Brent T. Griffith</style></author><author><style face="normal" font="default" size="100%">Drury B. Crawley</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Methodology for Analyzing the Technical Potential for Energy Performance in the U.S. Commercial Buildings Sector With Detailed Energy Modeling</style></title><secondary-title><style face="normal" font="default" size="100%">SimBuild 2006</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2006</style></year><pub-dates><date><style  face="normal" font="default" size="100%">08/2006</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Cambridge, MA, USA</style></pub-location><language><style face="normal" font="default" size="100%">eng</style></language></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>10</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Brent T. Griffith</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">A Model for Naturally Ventilated Cavities on the Exteriors of Opaque Building Thermal Envelopes</style></title><secondary-title><style face="normal" font="default" size="100%">SimBuild 2006</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2006</style></year><pub-dates><date><style  face="normal" font="default" size="100%">08/2006</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Cambridge, MA, USA</style></pub-location><language><style face="normal" font="default" size="100%">eng</style></language></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>10</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Michael Wetter</style></author><author><style face="normal" font="default" size="100%">Christoph Haugstetter</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Modelica versus TRNSYS — A Comparison Between an Equation-Based and a Procedural Modeling Language for Building Energy Simulation</style></title><secondary-title><style face="normal" font="default" size="100%">Proc. of the 2nd SimBuild Conference</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2006</style></year><pub-dates><date><style  face="normal" font="default" size="100%">08/2006</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://www.ibpsa.us/pub/simbuild2006/papers/SB06_001_008.pdf</style></url></web-urls></urls><pub-location><style face="normal" font="default" size="100%">Cambridge, MA, USA</style></pub-location><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;The EnergyPlus building energy simulation software has been tested using the IEA HVAC BESTEST E300-E545 series of tests and the IEA HVAC BESTEST Fuel-Fired test series. The first is a series of comparative tests for a single-zone DX cooling system which tests a program&#039;s ability to model hourly loads over an expanded range of performance conditions for various air mixing, infiltration, thermostat set-up, overload conditions, and various economizer control schemes. The second is a series of analytical/semianalytical comparative tests for a single-zone fuel-fired furnace which tests a program&#039;s ability to model steady state performance, varying outdoor and indoor conditions, and circulating and draft fan operation. Each of these HVAC BESTEST series were used to test EnergyPlus prior to new public releases. The application of these tests proved to be very useful in several ways: a) revealed algorithmic errors which were fixed, b) revealed algorithmic shortcomings which were improved or eliminated through the use of more rigorous calculations for certain components, and c) caught newly introduced bugs before public release of updates.&lt;/p&gt;</style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Christoph Nytsch-Geusen</style></author><author><style face="normal" font="default" size="100%">Andre Nordwig</style></author><author><style face="normal" font="default" size="100%">Mathias Vetter</style></author><author><style face="normal" font="default" size="100%">Christoph Wittwer</style></author><author><style face="normal" font="default" size="100%">Thierry Stephane Nouidui</style></author><author><style face="normal" font="default" size="100%">Peter Schneider</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">MOSILAB: Ein Modelica-Simulationswerkzeug zur energetischen Gebäude- und Anlagensimulation</style></title><secondary-title><style face="normal" font="default" size="100%">16. Symposium Thermische Solarenergie</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2006</style></year></dates><pub-location><style face="normal" font="default" size="100%">Bad Staffelstein, Germany</style></pub-location><isbn><style face="normal" font="default" size="100%">3-934681-45-X</style></isbn><language><style face="normal" font="default" size="100%">eng</style></language></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>10</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Michael Wetter</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Multizone Airflow Model in Modelica</style></title><secondary-title><style face="normal" font="default" size="100%">Proc. of the 5th International Modelica Conference</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">contaminant transport</style></keyword><keyword><style  face="normal" font="default" size="100%">multizone airflow</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2006</style></year><pub-dates><date><style  face="normal" font="default" size="100%">09/2006</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">https://www.modelica.org/events/modelica2006/Proceedings/sessions/Session413.pdf</style></url></web-urls></urls><pub-location><style face="normal" font="default" size="100%">Vienna, Austria</style></pub-location><pages><style face="normal" font="default" size="100%">431-440</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;We present the implementation of a library of multi-zone airflow models in Modelica and a comparative model validation with CONTAM. Our models have a similar level of detail as the models in CONTAM and COMIS. The multizone airflow models allow modeling the flow between rooms through doors, staircases or construction cracks. The flow can be caused by buoyancy effects, such as stack effects in high rise buildings or air temperature imbalance between adjoining rooms, by flow imbalance of a ventilation system, or by wind pressure on the building envelope. The here presented library can be used with a Modelica library for thermal building and HVAC system simulation to compute interzonal air flow rates. The combined use facilitates the integrated design of building systems, which is typically required for analyzing the interaction of room control loops in variable air volume flow systems through open doors, the flow in naturally ventilated buildings and the pressure in elevator shafts caused by stacked effects.&lt;/p&gt;</style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>10</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Michael Wetter</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Multizone Building Model for Thermal Building Simulation in Modelica</style></title><secondary-title><style face="normal" font="default" size="100%">Proc. of the 5th International Modelica Conference</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2006</style></year><pub-dates><date><style  face="normal" font="default" size="100%">9/2006</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">https://www.modelica.org/events/modelica2006/Proceedings/sessions/Session5b4.pdf</style></url></web-urls></urls><pub-location><style face="normal" font="default" size="100%">Vienna, Austria</style></pub-location><pages><style face="normal" font="default" size="100%">517-526</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">We present a room model for thermal building simu- lation that we implemented in Modelica. The room model can be used for controls analysis and energy analysis of one or several rooms that are connected through airflow or heat conduction. The room model can assess energy storage in the air and in the build- ing construction materials, heat transfer between the room and the outside environment and the humidity and CO2 release to the room air. The humidity storage in the building construction materials is not modeled. We also describe a novel separation of heat transfer mechanisms on which our room model is built on. The separation allowed a significant reduction in model de- velopment time, and it allows using state-of-the-art programs for computing prior to the thermal building simulation certain energy flows, such as solar heat gain of an active facade without breaking feedback loops between the HVAC system and the room.</style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Peng Xu</style></author><author><style face="normal" font="default" size="100%">Philip Haves</style></author><author><style face="normal" font="default" size="100%">Moosung Kim</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Model-Based Automated Functional Testing-Methodology and Application to Air Handling Units</style></title><secondary-title><style face="normal" font="default" size="100%">ASHRAE Transactions</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2005</style></year></dates><volume><style face="normal" font="default" size="100%">111</style></volume><language><style face="normal" font="default" size="100%">eng</style></language><issue><style face="normal" font="default" size="100%">Pt. 1</style></issue><custom2><style face="normal" font="default" size="100%">LBNL-55802</style></custom2><section><style face="normal" font="default" size="100%">979</style></section></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Daniel E. Fisher</style></author><author><style face="normal" font="default" size="100%">Simon J. Rees</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Modeling Ground Source Heat Pump Systems in a Building Energy Simulation Program (EnergyPlus)</style></title><secondary-title><style face="normal" font="default" size="100%">IBPSA Building Simulation 2005</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2005</style></year><pub-dates><date><style  face="normal" font="default" size="100%">08/2005</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Montreal, canada</style></pub-location><language><style face="normal" font="default" size="100%">eng</style></language></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>10</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Christoph Nytsch-Geusen</style></author><author><style face="normal" font="default" size="100%">Thilo Ernst</style></author><author><style face="normal" font="default" size="100%">Peter Schneider</style></author><author><style face="normal" font="default" size="100%">Mathias Vetter</style></author><author><style face="normal" font="default" size="100%">Andreas Holm</style></author><author><style face="normal" font="default" size="100%">Juergen Leopold</style></author><author><style face="normal" font="default" size="100%">Ullrich Doll</style></author><author><style face="normal" font="default" size="100%">Andre Nordwig</style></author><author><style face="normal" font="default" size="100%">Peter Schwarz</style></author><author><style face="normal" font="default" size="100%">Christoph Wittwer</style></author><author><style face="normal" font="default" size="100%">Thierry Stephane Nouidui</style></author><author><style face="normal" font="default" size="100%">Gerhardt Schmidt</style></author><author><style face="normal" font="default" size="100%">Alexander Mattes</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">MOSILAB: Development of a modelica based generic simulation tool supporting modal structural dynamics</style></title><secondary-title><style face="normal" font="default" size="100%">4th International Modelica Conference</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2005</style></year></dates><pub-location><style face="normal" font="default" size="100%">Hamburg, Germany</style></pub-location><pages><style face="normal" font="default" size="100%">pp.527-534</style></pages><language><style face="normal" font="default" size="100%">eng</style></language></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>10</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Prajesh Bhattacharya</style></author><author><style face="normal" font="default" size="100%">Patrick E. Phelan</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Modeling the Behavior of F1-ATPase Biomolecular Motors Using Brownian Dynamics Simulation</style></title><secondary-title><style face="normal" font="default" size="100%">BioDevice Interface Science and Technology Workshop</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2002</style></year><pub-dates><date><style  face="normal" font="default" size="100%">09/2002</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Scottsdale, AZ</style></pub-location><language><style face="normal" font="default" size="100%">eng</style></language></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>10</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Philip Haves</style></author><author><style face="normal" font="default" size="100%">Satkartar T. Khalsa</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Model-based Performance Monitoring: Review of Diagnostic Methods and Chiller Case Study</style></title><secondary-title><style face="normal" font="default" size="100%">ACEEE Summer School</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2000</style></year><pub-dates><date><style  face="normal" font="default" size="100%">08/2000</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Asilomar, California, USA</style></pub-location><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;The paper commences by reviewing the variety of technical approaches to the problem of detecting and diagnosing faulty operation in order to improve the actual performance of buildings. The review covers manual and automated methods, active testing and passive monitoring, the different classes of models used in fault detection, and methods of diagnosis. The process of model-based fault detection is then illustrated by describing the use of relatively simple empirical models of chiller energy performance to monitor equipment degradation and control problems. The CoolTools™ chiller model identification package is used to fit the DOE-2 chiller model to on-site measurements from a building instrumented with high quality sensors. The need for simple algorithms to reject transient data, detect power surges and identify control problems is discussed, as is the use of energy balance checks to detect sensor problems. The accuracy with which the chiller model can be expected to predict performance is assessed from the goodness of fit obtained and the implications for fault detection sensitivity and sensor accuracy requirements are discussed. A case study is described in which the model was applied retroactively to high-quality data collected in a San Francisco office building as part of a related project (Piette et al. 1999).&lt;/p&gt;</style></abstract><custom2><style face="normal" font="default" size="100%">LBNL-45949</style></custom2></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>10</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Richard A. Buswell</style></author><author><style face="normal" font="default" size="100%">Philip Haves</style></author><author><style face="normal" font="default" size="100%">Tim I. Salsbury</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">A Model-Based Approach to the Commissioning of HVAC Systems</style></title><secondary-title><style face="normal" font="default" size="100%">CLIMA 2000</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1997</style></year><pub-dates><date><style  face="normal" font="default" size="100%">08/1997</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Brussles, Belgium</style></pub-location><language><style face="normal" font="default" size="100%">eng</style></language></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>10</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Simon J. Rees</style></author><author><style face="normal" font="default" size="100%">Philip Haves</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">A Model of a Displacement Ventilation/Chilled Ceiling Cooling System Suitable for Annual Energy Simulation</style></title><secondary-title><style face="normal" font="default" size="100%">Building Simulation &#039;95</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1995</style></year><pub-dates><date><style  face="normal" font="default" size="100%">08/1995</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Madison, WI</style></pub-location><language><style face="normal" font="default" size="100%">eng</style></language></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>10</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Philip Haves</style></author><author><style face="normal" font="default" size="100%">Simon J. Rees</style></author><author><style face="normal" font="default" size="100%">Harrington, L.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Modelling and Simulation of Low Energy Cooling Systems</style></title><secondary-title><style face="normal" font="default" size="100%">Tsinghua HVAC-95</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1995</style></year><pub-dates><date><style  face="normal" font="default" size="100%">09/1995</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Bejing, China</style></pub-location><language><style face="normal" font="default" size="100%">eng</style></language></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>10</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Mourad Benouarets</style></author><author><style face="normal" font="default" size="100%">Arthur L. Dexter</style></author><author><style face="normal" font="default" size="100%">Richard S. Fargus</style></author><author><style face="normal" font="default" size="100%">Philip Haves</style></author><author><style face="normal" font="default" size="100%">Tim I. Salsbury</style></author><author><style face="normal" font="default" size="100%">Jonathan A. Wright</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Model-Based Approaches to Fault Detection and Diagnosis in Air-Conditioning System</style></title><secondary-title><style face="normal" font="default" size="100%">System Simulation in Buildings &#039;94</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1994</style></year><pub-dates><date><style  face="normal" font="default" size="100%">12/1994</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Liège, Belgium</style></pub-location><language><style face="normal" font="default" size="100%">eng</style></language></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Joseph H. Eto</style></author><author><style face="normal" font="default" size="100%">Steven D. Gates</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Modeling Cogeneration Systems with DOE-2.1C</style></title><secondary-title><style face="normal" font="default" size="100%">ASHRAE 1988 Winter Meeting</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1988</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/1988</style></date></pub-dates></dates><publisher><style face="normal" font="default" size="100%">LBNL</style></publisher><pub-location><style face="normal" font="default" size="100%">Dallas, TX</style></pub-location></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>10</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Fred M. Loxsom</style></author><author><style face="normal" font="default" size="100%">Gene Clark</style></author><author><style face="normal" font="default" size="100%">Merino, M.</style></author><author><style face="normal" font="default" size="100%">Philip Haves</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Measurement of Components of Heat Transfer in Passive Cooling Systems</style></title><secondary-title><style face="normal" font="default" size="100%">1st International Passive &amp; Hybrid Cooling Conference</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1981</style></year><pub-dates><date><style  face="normal" font="default" size="100%">11/1981</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Miami, FL</style></pub-location><language><style face="normal" font="default" size="100%">eng</style></language></record></records></xml>