Thermal Performance Of Buildings Qualitative Detection Of Thermal Irregularities In Building Envelopes Infrared Method
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Thermal Performance Of Buildings Qualitative Detection Of Thermal Irregularities In Building Envelopes Infrared Method
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Author : British Standards Institute Staff
language : en
Publisher:
Release Date : 1999-03-15
Thermal Performance Of Buildings Qualitative Detection Of Thermal Irregularities In Building Envelopes Infrared Method written by British Standards Institute Staff and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999-03-15 with categories.
Buildings, Thermal insulation, Thermal behaviour of structures, Thermal environment systems, Irregular, Infrared radiation, Detectors, Thermography, Temperature measurement, Thermal design of buildings, Cameras, Test equipment, Performance testing, Pattern recognition, Reports, Testing conditions, Control samples, Defects, Specimen preparation, Heat loss, Heat transfer
Discours Van De Tegenwoordige Saken En Handelingen Van Europa
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Author :
language : en
Publisher:
Release Date : 1680
Discours Van De Tegenwoordige Saken En Handelingen Van Europa written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1680 with France categories.
Thermal Performance Of Buildings
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Author :
language : en
Publisher:
Release Date : 1998
Thermal Performance Of Buildings written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with categories.
Thermal Performance Of Buildings
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Author :
language : en
Publisher:
Release Date : 1999
Thermal Performance Of Buildings written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with categories.
Quantitative Thermal Performance Assessment Of Building Envelopes Emergent Practices And Infrared Thermography
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Author : Milad Mahmoodzadeh
language : en
Publisher:
Release Date : 2022
Quantitative Thermal Performance Assessment Of Building Envelopes Emergent Practices And Infrared Thermography written by Milad Mahmoodzadeh and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022 with categories.
Since many buildings in Canada were built prior to the advent of national and provincial energy codes and standards, quantifying building envelope thermal performance in existing buildings is an important step in identifying retrofit opportunities. Due to the lack of building codes or standards for existing buildings in Canada, development of a rapid and robust quantitative approach to evaluate and rank buildings for vertical envelope retrofits is required. Hence, this dissertation sought to develop quantitative approaches to evaluate existing building envelope thermal performance in Canada and beyond. Following current professional practices, in Chapter 1, a comprehensive study was conducted on 49 campus buildings at the University of Victoria (UVic) to evaluate potential energy savings from vertical envelope retrofits, and to further validate those savings through more detailed energy models and parametric analyses for a subset of buildings. To this end, the thermal performance of a building envelope was quantified based on its heat loss coefficient (UA), obtained from multiplying its surface area (A) by its thermal transmittance (U-value). Heat loss calculations were used as a metric to inform envelope rehabilitation prioritization, while considering other data such as age and physical condition in parallel. Archetype energy models for selected buildings were used to evaluate the impacts of envelope retrofits on energy and GHG savings. The outcomes of this study allowed the University to weigh the benefits of improved energy performance from envelope retrofits against associated capital cost expenditures. Also, the implemented methodology and studied parameters unveiled a new horizon in evaluating the thermal performance of existing building envelopes in Canada, where a building code for existing buildings has not yet been established. Considering the economic findings of the envelope retrofits studied, it was concluded that in the absence of an existing building energy code, the University would likely require additional incentives, such as higher utility costs, higher carbon taxes, or qualifying for utility incentive programs to justify improving existing building envelope performance on the basis of energy only. The strength of the proposed methodology in Chapter 1 was in its balance of effort and ultimate decision-making utility, where reasonable thermal bridging approximations based on simulation models for existing buildings can yield data accurate enough to inform a ranking exercise on a large breadth of subject buildings. However, since numerical models do not consider degradation of building materials, real moisture content, and errors associated with manufacturing and installation, actual building envelope thermal performance differs from 3D simulation models. To study this limitation, in-situ thermal assessments of building envelopes were performed to quantify their actual thermal performances. To this end, Chapters 2 to 4 of this dissertation attempted to determine the viability of an external infrared thermography (IRT) survey technique for quantification of heat losses through the opaque building envelope, and also explores its potential application in identifying and comparing sources of air leakage. The experiments were performed on wood-framed wall assemblies commonly used in Canada due to growing interest among designers, builders, and governments to encourage the use of wood as a building material. In these studies, (Chapter 2 to Chapter 4), thermal transmittances (U-values) of wall assemblies were estimated with external IRT and compared with 3D computer simulations. Furthermore, the impact of the accuracy of U-values estimated with IRT on the deviation of energy simulation outputs with metered data was examined. Finally, a novel relative quantitative infrared index (IRI) was proposed as a means to facilitate rapid evaluation and subsequent ranking of building envelope thermal performance. From the experiments in Chapters 2 & 3, it was found that the U-values obtained with IRT were comparable with simulated values suggesting IRT can be a reliable tool for estimating the thermal performance of wood-framed wall assemblies. Results also demonstrated that thermal imaging artefacts including nonlinear characteristics of infrared (IR) camera focal array, a.k.a. non-uniformity corrections (NUC) and vignetting could have a substantial influence on the accuracy of results, in particular energy model outputs. This limitation was resolved by introducing a practical approach where thermal images were taken from different incident angle. Overall, IRI was found to be a reliable metric for relative quantitative comparison of building envelope thermal performance regardless of boundary conditions. Moreover, outcomes of the IRT air leakage study in Chapter 4 indicated that combined qualitative and quantitative IRT approaches could potentially be implemented by practitioners to identify sources of air leakage and thermal bridges in buildings and compare their relative severity. Since blower door testing is gradually being introduced as a building code requirement to measure building envelope airtightness in an increasing number of Canadian jurisdictions, performing IRT simultaneously is potentially valuable exercise in this context. Ultimately, the methodologies outlined in Chapters 2 to 4 can help decision-makers to characterize building envelope retrofits from a performance perspective, and potentially serve as a basis for governments to develop policies to improve existing building energy performance. The methodologies in Chapters 2 to 4 prompted opportunities to utilize the emergent technology of small unmanned aerial vehicles (UAVs) equipped with an infrared camera for quick thermal assessments of building envelopes. The last chapter of this dissertation, Chapter 5, outlines advantages and limitations of aerial IRT (UAV-IRT) surveys compared to conventional stationary IRT. Furthermore, a set of best practices for UAV-IRT were presented to minimize dynamic measurement uncertainty. It was concluded that with the current IR camera technology, aerial surveys for quantitative thermal assessment of building envelope are not as accurate as with conventional infrared thermography; further investigations by manufacturers and researchers are recommended.
Infrared Thermography For Building Moisture Inspection
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Author : Eva Barreira
language : en
Publisher: Springer
Release Date : 2018-09-26
Infrared Thermography For Building Moisture Inspection written by Eva Barreira and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-09-26 with Technology & Engineering categories.
This book presents the state-of-the-art in infrared thermography (IRT) applications with a focus on moisture assessment in buildings. It also offers practical discussions of several case studies, including comparisons of IRT with other surface temperature measurement techniques. In closing, it demonstrates how IRT can be used to assess capillary absorption, and addresses moisture in walls due to wind-driven rain infiltrations, and the drying process. The book equips readers with a deeper understanding of the ideal conditions for accurate IRT assessment and offers practical recommendations.
Infrared Thermography And Thermal Nondestructive Testing
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Author : Vladimir Vavilov
language : en
Publisher: Springer Nature
Release Date : 2020-07-10
Infrared Thermography And Thermal Nondestructive Testing written by Vladimir Vavilov and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-07-10 with Technology & Engineering categories.
This is the first book summarizing the theoretical basics of thermal nondestructive testing (TNDT) by combining elements of heat conduction, infrared thermography, and industrial nondestructive testing. The text contains the physical models of TNDT, heat transfer in defective and sound structures, and thermal properties of materials. Also included are the optimization of TNDT procedures, defect characterization, data processing in TNDT, active and passive TNDT systems, as well as elements of statistical data treatment and decision making. This text contains in-depth descriptions of applications in infrared/thermal testing within aerospace, power production, building, as well as the conservation of artistic monuments The book is intended for the industrial specialists who are involved in technical diagnostics and nondestructive testing. It may also be useful for academic researchers, undergraduate, graduate and PhD university students.
Development Of Thermal Envelope Design Guidelines For Federal Office Buildings
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Author : Andrew K. Persily
language : en
Publisher:
Release Date : 1990
Development Of Thermal Envelope Design Guidelines For Federal Office Buildings written by Andrew K. Persily and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with Office buildings categories.
Office building envelopes are generally successful in meeting a range of structural, aesthetic and thermal requirements. However, poor thermal envelope performance will occur when there are discontinuities in the envelope insulation and air barrier systems, such as thermal bridges and air leakage sites. These discontinuities result from designs that do not adequately account for heat, air and moisture transmission, with many thermal defects being associated with inappropriate or inadequate detailing of the connections of envelope components. Despite the existence of these thermal envelope performance problems, information is available to design and construct envelopes that do perform well. In order to close the gap between available knowledge and current practice, the Public Buildings Service of the General Services Administration has entered into an interagency agreement with the Center for Building Technology of the National Institute of Standards and Technology to develop thermal envelope design guidelines for federal office buildings. The goal of this project is to transfer the knowledge on thermal envelope design and performance from the building research, design and construction communities into a form that will be used by building design professionals. This report describes the NIST/GSA envelope design guidelines development at the end of the first year of effort on the project. The effort to this point has consisted of a literature review of research results and technical information on thermal envelope performance and design, an assessment of existing design guidelines as they relate to the thermal envelope, and the development of a format and outline for the design guidelines.
Infrared Thermography Recent Advances And Future Trends
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Author : Carosena Meola
language : en
Publisher: Bentham Science Publishers
Release Date : 2012-08-03
Infrared Thermography Recent Advances And Future Trends written by Carosena Meola and has been published by Bentham Science Publishers this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-08-03 with Technology & Engineering categories.
Infrared thermography (IRT) is a non-contact, non-invasive methodology which allows for detection of thermal energy that is radiated from objects in the infrared band of the electromagnetic spectrum, for conversion of such energy into a visible image (such as a surface temperature map). This feature represents a great potential to be exploited in a vast variety of fields from aerospace to civil engineering, to medicine, to agriculture, etc. However, IRT is still not adequately enclosed in industrial instrumentation and there are still potential users who might benefit from the use of such a technique and who are not aware of their existence. This e-book conveys information about basic IRT theory, infrared detectors, signal digitalization and applications of infrared thermography in many fields such as medicine, foodstuff conservation, fluid-dynamics, architecture, anthropology, condition monitoring, non destructive testing and evaluation of materials and structures. The volume promotes an exchange of information between the academic world and industry, and shares methodologies which were independently developed and applied in specific disciplines.
Architects Data
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Author : Ernst Neufert
language : en
Publisher: John Wiley & Sons
Release Date : 2023-10-09
Architects Data written by Ernst Neufert and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-10-09 with Architecture categories.
Architects’ Data An indispensable tool for the initial stages of designing and planning a building project This new edition of the classic bestselling text provides, in one concise volume, the essential information needed as the basis for the more detailed design and development of any building project. Organized largely by building type, it covers the planning criteria and considerations of function and location—and with over 6200 diagrams, it provides a mass of data on spatial requirements. Most of the featured illustrations are dimensioned and each building type includes plans, sections, site layouts and design details. The book also includes an extensive bibliography and detailed set of metric/imperial conversion tables. Architects’ Data, 6th Edition??starts with the basics of designing for a new building project, before moving on to covering everything an architect needs to know. It also looks at the design styles and specifications for creating different types of structures, such as those made for residential, commercial, religious, cultural, sports, medical and other types of occupation. Sixth??English edition of the classic, international reference for architects Covers user requirements, planning criteria, basic dimensions, and considerations of function and siting Includes numerous examples and over 6200 illustrations and tables New in the Sixth Edition: Updated sections on lighting, stairs and lifts, energy performance certificates and fire protection New sections on electric charging stations, beekeeping and newsrooms, and tiny houses Additional sections on sustainable building materials added to relevant chapters Architects’ Data??is an excellent resource for architects, building surveyors, space planners, and design and building contractors everywhere.