Development of an Automated Methodology for Calibration of Simplified Air-side HVAC System Models and Estimation of Potential Savings from Retrofit/commissioning Measures PDF Download
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Author: Juan Carlos Baltazar Cervantes Publisher: ISBN: 9781109849493 Category : Languages : en Pages : 288
Book Description
This dissertation provides one methodology to determine potential energy savings of buildings with limited information. This methodology is based upon the simplified energy analysis procedure of HVAC systems and the control of the comfort conditions. Numerically, the algorithm is a tailored exhaustive search over all the independent variables that are commonly controlled for a specific type of HVAC system. The potential energy savings methodology has been applied in several buildings that have been retrofitted and/or commissioned previously. Results from the determined savings for the Zachry building at Texas A&M after being commissioned show a close agreement to the calculated potential energy savings (about 85%). Differences are mainly attributed to the use of simplified models.
Author: Juan Carlos Baltazar Cervantes Publisher: ISBN: 9781109849493 Category : Languages : en Pages : 288
Book Description
This dissertation provides one methodology to determine potential energy savings of buildings with limited information. This methodology is based upon the simplified energy analysis procedure of HVAC systems and the control of the comfort conditions. Numerically, the algorithm is a tailored exhaustive search over all the independent variables that are commonly controlled for a specific type of HVAC system. The potential energy savings methodology has been applied in several buildings that have been retrofitted and/or commissioned previously. Results from the determined savings for the Zachry building at Texas A&M after being commissioned show a close agreement to the calculated potential energy savings (about 85%). Differences are mainly attributed to the use of simplified models.
Author: Stephan A. Roosa Publisher: CRC Press ISBN: 8770222657 Category : Science Languages : en Pages : 893
Book Description
This comprehensive handbook is recognized as the definitive stand-alone energy manager’s desk reference, used by tens of thousands of professionals throughout the energy management industry. This new ninth edition includes new chapters on energy management controls systems, compressed air systems, renewable energy, and carbon reduction. There are major updates to chapters on energy auditing, lighting systems, boilers and fired systems, steam and condensate systems, green buildings waste heat recovery, indoor air quality, utility rates, natural gas purchasing, commissioning, financing and performance contracting and much more with numerous new and updated illustrations, charts, calculation procedures and other helpful working aids.
Author: Rüdiger Lohse Publisher: Springer ISBN: 3030149226 Category : Technology & Engineering Languages : en Pages : 135
Book Description
This book provides detailed information on how to set up Deep Energy Retrofits (DERs) in public buildings, and shares in-depth insights into the current status of the major technologies, strategies and practical best practice examples of how to cost-effectively combine them. Case studies from Europe are analyzed with respect to energy use before and after renovation, reasons for undertaking the renovation, co-benefits achieved, resulting cost-effectiveness, and the business models employed. The building sector holds the potential for tremendous improvements in terms of energy efficiency and reducing carbon emissions, and energy retrofits to the existing building stock represent a significant opportunity in the transition to a low-carbon future. Moreover, investing in highly efficient building materials and systems can replace long-term energy imports, contribute to cost cutting, and create a wealth of new jobs. Yet, while the technologies needed in order to improve energy efficiency are readily available, significant progress has not yet been made, and “best practices” for implementing building technologies and renewable energy sources are still relegated to small “niche” applications. Offering essential information on Deep Energy Retrofits, the book offers a valuable asset for architects, public authorities, project developers, and engineers alike.
Author: Jan L.M. Hensen Publisher: Routledge ISBN: 0429688539 Category : Architecture Languages : en Pages : 958
Book Description
When used appropriately, building performance simulation has the potential to reduce the environmental impact of the built environment, to improve indoor quality and productivity, as well as to facilitate future innovation and technological progress in construction. Since publication of the first edition of Building Performance Simulation for Design and Operation, the discussion has shifted from a focus on software features to a new agenda, which centres on the effectiveness of building performance simulation in building life cycle processes. This new edition provides a unique and comprehensive overview of building performance simulation for the complete building life cycle from conception to demolition, and from a single building to district level. It contains new chapters on building information modelling, occupant behaviour modelling, urban physics modelling, urban building energy modelling and renewable energy systems modelling. This new edition keeps the same chapter structure throughout including learning objectives, chapter summaries and assignments. Moreover, the book: • Provides unique insights into the techniques of building performance modelling and simulation and their application to performance-based design and operation of buildings and the systems which service them. • Provides readers with the essential concepts of computational support of performance-based design and operation. • Provides examples of how to use building simulation techniques for practical design, management and operation, their limitations and future direction. It is primarily intended for building and systems designers and operators, and postgraduate architectural, environmental or mechanical engineering students.
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
This paper describes a method for testing model calibration techniques. Calibration is commonly used in conjunction with energy retrofit audit models. An audit is conducted to gather information about the building needed to assemble an input file for a building energy modeling tool. A calibration technique is used to reconcile model predictions with utility data, and then the 'calibrated model' is used to predict energy savings from a variety of retrofit measures and combinations thereof. Current standards and guidelines such as BPI-2400 and ASHRAE-14 set criteria for 'goodness of fit' and assume that if the criteria are met, then the calibration technique is acceptable. While it is logical to use the actual performance data of the building to tune the model, it is not certain that a good fit will result in a model that better predicts post-retrofit energy savings. Therefore, the basic idea here is that the simulation program (intended for use with the calibration technique) is used to generate surrogate utility bill data and retrofit energy savings data against which the calibration technique can be tested. This provides three figures of merit for testing a calibration technique, 1) accuracy of the post-retrofit energy savings prediction, 2) closure on the 'true' input parameter values, and 3) goodness of fit to the utility bill data. The paper will also discuss the pros and cons of using this synthetic surrogate data approach versus trying to use real data sets of actual buildings.
Author: Publisher: Ashrae ISBN: 9781936504237 Category : Energy conservation Languages : en Pages : 0
Book Description
"Designed to provide recommendations for achieving 50% energy savings over the minimum code requirements of ANSI/ASHRAE/IESNA Standard 90.1-2004 for large hospitals; allows contractors, consulting engineers, architects, and designers to easily achieve advanced levels of energy savings without having to resort to detailed calculations or analyses"--
Author: James V. Beck Publisher: James Beck ISBN: 9780471083191 Category : Mathematics Languages : en Pages : 336
Book Description
Here is the only commercially published work to deal with the engineering problem of determining surface heat flux and temperature history based on interior temperature measurements. Provides the analytical techniques needed to arrive at otherwise difficult solutions, summarizing the findings of the last ten years. Topics include the steady state solution, Duhamel's Theorem, ill-posed problems, single future time step, and more.
Author: Kathy Roper Publisher: AMACOM ISBN: 0814432166 Category : Business & Economics Languages : en Pages : 670
Book Description
The wide-ranging umbrella of facility management covers everything from technology systems to disaster recover planning to zoning compliance…and that’s just getting started. Facilities management is a multidisciplinary function that requires a deep knowledge of the entire business and physical planning cycle. Undoubtedly, the sheer scope of duties requires a far-reaching reference for staying abreast of the latest innovations and best practices. The Facility Management Handbook is the answer. This guide shares insightful overviews, case studies, and practical guidelines that pave the way for successful planning, budgeting, real estate transactions, construction, emergency preparedness, security, operations, maintenance, and more. The thoroughly revised fourth edition examines cutting-edge technologies and includes new information on: Building Information Modeling (BIM) Contracting and project management methods FASB and IASB requirements Distributed working Sustainability reporting and more The Facility Management Handbook is the one-stop resource every facility manager must have to master a broad scope of duties while staying current on innovations and best practices.
Author: Juan Carlos Baltazar Cervantes
Author: Juan Carlos Baltazar Cervantes
Author: 
Author: Stephan A. Roosa
Author: Rüdiger Lohse
Author: Jan L.M. Hensen
Author: 
Author: 
Author: James V. Beck
Author: 
Author: Kathy Roper