Download or read book Determination of Building Heat Loss and Thermal Integrity Using an Airborne Infrared Scanner written by Richard J. Goldstein and published by . This book was released on 1978 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Theory and Practice of Radiation Thermometry written by David P. DeWitt and published by John Wiley & Sons. This book was released on 1991-01-16 with total page 1156 pages. Available in PDF, EPUB and Kindle. Book excerpt: Here is the most comprehensive treatment available on practical temperature measurement methods using radiation thermometry. All aspects of measurement technology are covered: basic principles, types of radiation thermometers, calibration methods, and applications. Covers the latest instruments and discusses the central problem of radiation thermometry--how to infer the true temperature from the indicated temperature. Generously illustrated.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1982 with total page 1098 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research at the University of Minnesota written by University of Minnesota and published by . This book was released on 1978 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Detecting Structural Heat Losses with Mobile Infrared Thermography written by R. H. Munis and published by . This book was released on 1974 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Thermal Infrared Sensing Diagnostics Thermosense V October 25 27 1982 Detroit Michigan written by George E. Courville and published by . This book was released on 1983 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Thermal Insulation written by Frank J. Powell and published by ASTM International. This book was released on 1987 with total page 750 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An International Conference on Thermal Infrared Sensing for Diagnostics and Control Thermosense written by and published by . This book was released on 1984 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book DETECTION OF HEAT LOSS FROM BUILDINGS THROUGH AERIAL THERMOGRAPHY APPLICATIONS AND METHODOLOGY written by and published by . This book was released on 1977 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Estimation of the Thermal Performance of Building Walls and Thermal Bridges Using Active Infrared Thermography and Inverse Techniques written by Adrien François and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The building sector has a major role to play in the mitigation of greenhouse gas emissions. Indeed, residential and non-residential buildings account for 40% total energy consumption in the European union. In addition, given that 80% of building energy demand come from heating, thermal insulation is a domain with great potential for energy savings.The estimation of the thermal performance of a building usually relies on theoretical calculations. When in situ measurements are performed, the results often show some discrepancies with predictions: this is the so-called “performance gap”. Thus, it is important to distinguish the contribution of each element of the building envelope to the overall energy losses. In particular, “thermal bridges” (insulation irregularities) generate locally additional heat losses. They may also alter the thermal comfort of inhabitants as well as lead to mould growth issues.This thesis proposes several methods for the in situ estimation of heat losses in a building wall or in a thermal bridge. The methodology consists in applying an artificial thermal load to the wall and to analyze its transient response. This “active” approach is usually faster and less sensitive to weather conditions than standard steady-state methods. In practice, the indoor air is heated, and both the temperature and heat flux are measured on the wall surface. An inverse method then estimates the thermal resistance of the wall by fitting a model (direct model) to these transient measurements. The well-posedness of the inverse problem is assessed thanks to several mathematical tools. Some model reduction steps are required for the parameters of the direct model to be estimable with the desired uncertainty.In the case of a homogeneous wall, temperatures and heat fluxes are measured with contact sensors at one specific location. For a non-homogeneous wall or a thermal bridge, these local contact measurements are extrapolated to the rest of the wall thanks to infrared thermography and the quantification of the total heat transfer coefficient. For this purpose, several methods were developed to measure this coefficient in situ. Thanks to this extrapolation procedure, the inverse method can estimate the thermal resistance (or thermal transmittance) of an equivalent homogeneous wall having the same behavior as the real wall.The methods developed were validated on four experimental campaigns. Measurements were carried out in laboratory, in a climate chamber, and in situ. Different types of wall (heavyweight internally insulated wall, lightweight insulated wall) were tested. Several types of material-related thermal bridges were also investigated (mainly high-conductive materials in insulation systems). The results were compared to reference values obtained from steady-state measurements. Indeed, several methods for the characterization of thermal bridges in steady-state were compared: some are inspired from the literature, others are original.
Download or read book Practical Applications of Infrared Thermal Sensing and Imaging Equipment written by Herbert Kaplan and published by SPIE Press. This book was released on 2007 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: \- Preface - List of Figures - List of Tables - List of Acronyms and Abbreviations - Preface - Introduction - Basics of Noncontact Thermal Measurement - Matching the Instrument to the Application - Instruments Overview - Using IR Sensing and Imaging Instruments - Introduction to Applications - Plant Condition Monitoring and Predictive Maintenance - Buildings and Infrastructure - Materials Testing - Product and Process Monitoring Control - Night Vision, Security, and Surveillance - Life Sciences Thermography - Appendix A: Commercial Instrument Performance Characteristics - Appendix B: Manufacturers of IR Sensing and Imaging Instruments - Appendix C: Table of Generic Normal Emissivities of Materials - Appendix D: A Glossary of Terms for the Infrared Thermographer
Download or read book Selected Papers on Temperature Sensing optical Methods written by Ronald D. Lucier and published by SPIE-International Society for Optical Engineering. This book was released on 1995 with total page 606 pages. Available in PDF, EPUB and Kindle. Book excerpt: SPIE Milestones are collections of seminal papers from the world literature covering important discoveries and developments in optics and photonics.
Download or read book Detecting Sources of Heat Loss in Residential Buildings from Infrared Imaging written by Emily Chen Shao and published by . This book was released on 2011 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt: Infrared image analysis was conducted to determine the most common sources of heat loss during the winter in residential buildings. 135 houses in the greater Boston and Cambridge area were photographed, stitched, and tallied to characterize nine major causes of heat loss: window frames, window surfaces, window cracks, basements, door cracks, corners, chimneys, roof ridges, and soffits. The nine causes of heat loss were mapped to the three modes of heat transfer: conduction, convection, and radiation. It was found that heat losses through window surfaces, window cracks, chimneys, and soffits dominated as common sources of energy leakage, each represented in more than 70% of the houses analyzed. Opportunities for future work include more thorough examination of losses through ducts and walls, as well as developing methods for improvements.
Download or read book Media Hot and Cold written by Nicole Starosielski and published by Duke University Press. This book was released on 2021-10-04 with total page 171 pages. Available in PDF, EPUB and Kindle. Book excerpt: In Media Hot and Cold Nicole Starosielski examines the cultural dimensions of temperature to theorize the ways heat and cold can be used as a means of communication, subjugation, and control. Diving into the history of thermal media, from infrared cameras to thermostats to torture sweatboxes, Starosielski explores the many meanings and messages of temperature. During the twentieth century, heat and cold were broadcast through mass thermal media. Today, digital thermal media such as bodily air conditioners offer personalized forms of thermal communication and comfort. Although these new media promise to help mitigate the uneven effects of climate change, Starosielski shows how they can operate as a form of biopower by determining who has the ability to control their own thermal environment. In this way, thermal media can enact thermal violence in ways that reinforce racialized, colonial, gendered, and sexualized hierarchies. By outlining how the control of temperature reveals power relations, Starosielski offers a framework to better understand the dramatic transformations of hot and cold media in the twenty-first century.
Download or read book Infrared Inspection Techniques for Assessing the Exterior Envelopes of Office Buildings written by YM. Chang and published by . This book was released on 1987 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt: In order to assess the thermal integrity of new and existing office buildings, the National Bureau of Standards (NBS) developed and performed a series of diagnostic tests on eight federal office buildings. These buildings have different sizes, ranging from 1800 m2 to 48 000 m2 of floor area, and are located in various climate zones. Thermographic inspection is one of the diagnostic procedures used to identify the locations of heat loss areas, to determine the extent of deterioration of building materials, and to establish a basis for recommendation of retrofit options. Other test methods applied to these buildings for envelope measurements include heat flow for the thermal resistances, tracer gas for air infiltration, and pressurization tests for building tightness. Three types of thermographic inspections were conducted on these buildings: ground-based infrared surveys, serial infrared surveys, and inspection with a spot radiometer. These buildings were designed to meet the new federal energy guidelines of less than 630 MJ/m2 per year of on-site energy consumption and less than 1200 MJ/m2 per year of off-site energy consumption. The thermographic inspections reveal the existence of several classes of thermal deficiencies in the buildings, which were due to both inadequate building design and poor construction quality. Comparisons of the results from several thermographic techniques are shown. Analysis of thermographic data with examples of thermal defects observed from all inspections is presented. Quantitative comparisons of the wall thermal resistance values measured by the spot radiometer with those from heat flow meter measurements are also included.
Download or read book Thermal Performance of Buildings Qualitative Detection of Thermal Irregularities in Building Envelopes Infrared Method written by British Standards Institute Staff and published by . This book was released on 1999-03-15 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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
Download or read book Thermosense II written by and published by . This book was released on 1980 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:
