Relevant bibliographies by topics / Passive building thermography

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  3. Conference papers

Academic literature on the topic 'Passive building thermography'

Author: Grafiati
Published: 4 June 2021
Last updated: 6 February 2022

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Journal articles on the topic "Passive building thermography"

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Kavuru, Manogna, and Elisabetta Rosina. "Developing Guidelines for the Use of Passive Thermography on Cultural Heritage in Tropical Climates." Applied Sciences 10, no. 23 (November 26, 2020): 8411. http://dx.doi.org/10.3390/app10238411.

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Infrared thermography (IRT) has been a very successful tool for the diagnosis and monitoring of cultural heritage restoration projects. It has been used to identify anomalies, moisture issues, etc., in historic buildings. Although it is a promising tool, one of the limitations is that a method to deploy it onsite has not been standardized. This is due to the different variables that might affect thermal signatures captured by the thermal camera, when onsite. Especially since environmental conditions play a major role in thermography, the process must vary from region to region significantly. That said, efforts have been made over the years to establish some base standards for designated purposes of infrared thermography in the construction field. These standards and best practice methods, although comprehensive, do not effectively help with issues that are contextual to the location of the building, for instance, tropical climates, such as India. This paper aims to suggest guidelines for a passive approach of thermography, based on practical applications and procedures followed during the thermographic survey at the former British Residency in Hyderabad, India. Additionally, this paper explores the avenues through which region specific guidelines can be established.
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Brooke, Christopher. "Thermal Imaging for the Archaeological Investigation of Historic Buildings." Remote Sensing 10, no. 9 (September 3, 2018): 1401. http://dx.doi.org/10.3390/rs10091401.

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A significant problem in understanding the archaeology of standing buildings relates to the proscription to uncover features and structures within plastered and rendered walls due to the susceptibility and historic importance of such structures. Infrared thermography offers a method of visualization that is nondestructive and capable of revealing various types of archaeological anomaly that has been demonstrated on a small scale in the past. A passive infrared thermal camera is used to examine several historic buildings that are known or suspected to contain hidden archaeological information; the technique is also presented on complex, exposed historic building fabric. The results confirm that it is possible to detect various types of man-made anomaly and to differentiate building materials. In consequence, the use of passive thermal infrared imaging is shown to be a valuable tool in the examination and recording of historic buildings and structures.
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Tejedor, Blanca, Kàtia Gaspar, Miquel Casals, and Marta Gangolells. "Analysis of the Applicability of Non-Destructive Techniques to Determine In Situ Thermal Transmittance in Passive House Façades." Applied Sciences 10, no. 23 (November 24, 2020): 8337. http://dx.doi.org/10.3390/app10238337.

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Within the European framework, the passive house has become an essential constructive solution in terms of building efficiency and CO2 reduction. However, the main approaches have been focused on post-occupancy surveys, measurements of actual energy consumption, life-cycle analyses in dynamic conditions, using simulation, and the estimation of the thermal comfort. Few studies have assessed the in situ performance of the building fabric of passive houses. Hence, this paper explores the applicability of non-destructive techniques—heat flux meter (HFM) and quantitative infrared thermography (QIRT)—for assessing the gap between the predicted and actual thermal transmittance of passive house façades under steady-state conditions in the Mediterranean climate. Firstly, the suitability of in situ non-destructive techniques was checked in an experimental mock-up, and, subsequently, a detached house was tested in the real built environment. The findings revealed that both Non-Destructive Testing (NDT) techniques allow for the quantification of the gap between the design and the actual façades U-value of a new passive house before its operational stage. QIRT was faster than the HFM technique, although the latter was more accurate. The results will help practitioners to choose the most appropriate method based on environmental conditions, execution of the method, and data analysis.
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Karpov, Denis, Mikhail Pavlov, Liliya Mukhametova, and Anton A. Mikhin. "Features and results of assessment the thermal conductivity of building materials and products by the active method of thermal non-destructive testing." E3S Web of Conferences 220 (2020): 01053. http://dx.doi.org/10.1051/e3sconf/202022001053.

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Thermal control (passive and active) is a non-destructive testing method. During passive thermal control, the test object is characterized by a temperature field formed during its operation. In active thermal control, the test object is additionally thermally stimulated. This technique is widely used in various areas of construction, energy, mechanical engineering, transport. This paper proposes a variant of active thermal non-destructive assessment of the thermal conductivity coefficient of building materials and products on the example of a fragment of a building structure made of silicate bricks. The test object is subjected to thermal stimulation by an external source of thermal energy before reaching a steady-state thermal regime. Thermography of the test object surfaces is carried out. The average integral temperatures of surfaces or individual sections of the test object are calculated. The coefficient of thermal conductivity of the test object is determined, which is used to calculate its thermal resistance (resistance to heat transfer). After that, the coefficient of heat transfer is calculated. The method was implemented in laboratory conditions. It can be used in natural and operational conditions for accurate and quick determination of the key thermophysical properties of building materials and products.
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Ortiz-Sanz, Juan, Mariluz Gil-Docampo, Marcos Arza-García, and Ignacio Cañas-Guerrero. "IR Thermography from UAVs to Monitor Thermal Anomalies in the Envelopes of Traditional Wine Cellars: Field Test." Remote Sensing 11, no. 12 (June 14, 2019): 1424. http://dx.doi.org/10.3390/rs11121424.

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Infrared thermography (IRT) techniques for building inspection are currently becoming increasingly popular as non-destructive methods that provide valuable information about surface temperature (ST) and ST contrast (delta-T). With the advent of unmanned aerial vehicle (UAV)-mounted thermal cameras, IRT technology is now endowed with improved flexibility from an aerial perspective for the study of building envelopes. A case study cellar in Northwest (NW) Spain is used to assess the capability and reliability of low-altitude passive IRT in evaluating a typical semi-buried building. The study comparatively assesses the use of a pole-mounted FLIR B335 camera and a drone-mounted FLIR Vue Pro R camera for this purpose. Both tested IRT systems demonstrate good effectiveness in detecting thermal anomalies (e.g., thermal bridges, air leakages, constructive singularities, and moisture in the walls of the cellar) but pose some difficulties in performing accurate ST measurements under real operating conditions. Working with UAVs gives great flexibility for the inspection, but the angle of view strongly influences the radiometric data captured and must be taken into account to avoid disturbances due to specular reflections.
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Карпов, Д., and Denis Karpov. "THE ACTIVE METHOD OF CONTROL THE THERMAL CONDUCTIVITY OF BUILDING MATERIALS AND PRODUCTS." Bulletin of Belgorod State Technological University named after. V. G. Shukhov 4, no. 7 (July 21, 2019): 57–62. http://dx.doi.org/10.34031/article_5d35d0b79c34c5.75173950.

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Thermal control refers to non-destructive testing methods. There are passive and active thermal non-destructive testing. With passive thermal control, the test object is characterized by a temperature field formed during its operation. With active thermal control, an additional source of thermal stimulation of the controlled object is used. Thermal control is widely used in various sectors of construction, energy, engineering and transport. The paper proposes a variant of active thermal non-destructive control of thermal conductivity coefficient of building materials and products on the example of a fragment of a building structure made of silicate bricks. The controlled object is subjected to thermal stimulation by an external source of thermal energy until the fixed thermal regime. Thermography of the test object surfaces is performed. The average values of surfaces temperature or individual sections of controlled object are calculated. The heat equation determines a controlled parameter - the heat coefficient of the object under control. The thermal resistance (heat transfer resistance) of the controlled object is calculated with a known coefficient of thermal conductivity. The heat transfer coefficient is calculated with a known coefficient of thermal resistance (heat transfer resistance). The method is implemented in the laboratory. It can be used in field and operating conditions for accurate and rapid determination of the key thermal properties of building materials and products.
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Sham, Janet F. C., Wallace W. L. Lai, Wing Chan, and Chee Lin Koh. "Imaging and condition diagnosis of underground sewer liners via active and passive infrared thermography: A case study in Singapore." Tunnelling and Underground Space Technology 84 (February 2019): 440–50. http://dx.doi.org/10.1016/j.tust.2018.11.013.

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Ibarra-Castanedo, Clemente, Matthieu Klein, Martin Lavoie, Denis Proteau, and Jean Dumoulin. "Evaluation of Impact of Hot-Mix Asphalt Density Differentials on Thermal Streak Phenomenon by Passive Infrared Thermography." Journal of Materials in Civil Engineering 31, no. 10 (October 2019): 04019215. http://dx.doi.org/10.1061/(asce)mt.1943-5533.0002822.

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Garrido, Iván, Mercedes Solla, Susana Lagüela, and Norberto Fernández. "IRT and GPR Techniques for Moisture Detection and Characterisation in Buildings." Sensors 20, no. 22 (November 10, 2020): 6421. http://dx.doi.org/10.3390/s20226421.

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The integrity, comfort, and energy demand of a building can be negatively affected by the presence of moisture in its walls. Therefore, it is essential to identify and characterise this building pathology with the most appropriate technologies to perform the required prevention and maintenance tasks. This paper proposes the joint application of InfraRed Thermography (IRT) and Ground-Penetrating Radar (GPR) for the detection and classification of moisture in interior walls of a building according to its severity level. The IRT method is based on the study of the temperature distribution of the thermal images acquired without an application of artificial thermal excitation for the detection of superficial moisture (less than 15 mm deep in plaster with passive IRT). Additionally, in order to characterise the level of moisture severity, the Evaporative Thermal Index (ETI) was obtained for each of the moisture areas. As for GPR, with measuring capacity from 10 mm up to 30 cm depth with a 2300 MHz antenna, several algorithms were developed based on the amplitude and spectrum of the received signals for the detection and classification of moisture through the inner layers of the wall. In this work, the complementarity of both methods has proven to be an effective approach to investigate both superficial and internal moisture and their severity. Specifically, IRT allowed estimating superficial water movement, whereas GPR allowed detecting points of internal water accumulation. Thus, through the combination of both techniques, it was possible to provide an interpretation of the water displacement from the exterior surface to the interior surface of the wall, and to give a relative depth of water inside the wall. Therefore, it was concluded that more information and greater reliability can be gained by using complementary IRT-GPR, showing the benefits of combining both techniques in the building sector.
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Barreira, Eva, Ricardo M. S. F. Almeida, and Mariana Moreira. "An infrared thermography passive approach to assess the effect of leakage points in buildings." Energy and Buildings 140 (April 2017): 224–35. http://dx.doi.org/10.1016/j.enbuild.2017.02.009.

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Dissertations / Theses on the topic "Passive building thermography"

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Fox, Matthew William. "Thermography approaches for building defect detection." Thesis, University of Plymouth, 2016. http://hdl.handle.net/10026.1/4304.

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Thermography is one technology, which can be used to detect thermally significant defects in buildings and is traditionally performed using a walk-through methodology. Yet because of limitations such as transient climatic changes, there is a key performance gap between image capture and interpretation. There are however new methodologies currently available, which actively address some of these limitations. By better understanding alternative methodologies, the performance gap can be reduced. This thesis contrasts three thermography methodologies (Walk-through, time-lapse and pass-by) to learn how they deal with limitations and address specific building defects and thermal performance issues. For each approach, practical methodologies were developed and used on laboratory experiments (hot plate) and real dwelling case studies. For the real building studies, 133 dwellings located in Devon and Cornwall (South West England) were studied; this sample represents a broad spectrum of construction types and building ages. Experiments testing these three methodologies found individual strengths and weaknesses for each approach. Whilst traditional thermography can detect multiple defects, characterisation is not always easy to achieve due to the effects of transient changes, which are largely ignored under this methodology. Time-lapse thermography allows the observation of transient changes from which more accurate assessment of defect behaviour can be gained. This is due to improved differentiation between environmental conditions (such as cloud cover and clear sky reflections), actual material thermal behaviour and construction defects. However time-lapse thermography is slow, complex and normally only observes one view. Walk-past thermography is a much faster methodology, inspecting up to 50 dwellings per survey session. Yet this methodology misses many potential defects due to low spatial resolutions, single (external only) elevation inspection and ignoring transient climate and material changes. The implications of these results for building surveying practice clearly indicate that for an improved defect characterisation of difficult to interpret defects such as moisture ingress, thermographers should make use of time-lapse thermography. A review of methodology practicalities illustrates how the need for improved characterisation can be balanced against time and resources when deciding upon the most suitable approach. In order to help building managers and thermographers to decide on the most suitable thermography approach, two strategies have been developed. The first combines different thermography methodologies into a phased inspection program, where spatial and temporal resolution increase with each subsequent thermography inspection. The second provides a decision-making framework to help select the most appropriate thermography methodology for a given scenario or defect.
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Panovec, Jan. "Uplatnění energie obnovitelných zdrojů v budovách." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2015. http://www.nusl.cz/ntk/nusl-227660.

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The aim of this diploma thesis is to understand the functioning of heating and cooling systems in an administrative building built in passive standard using a renewable energy source. The thesis includes theoretical findings of heat pumps and designing the heating systems. The experimental part contains an analysis of working of heating and cooling systems in selected rooms in assigned building, which includes an experimental measurement of selected quantities and a thermographic measurement. In the last part of the thesis a comparison of measured and simulated values using simulation software was done.
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Conference papers on the topic "Passive building thermography"

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Olbrycht, R. "Thermographic analysis of building structures by passive transient measurements." In 2020 Quantitative InfraRed Thermography. QIRT Council, 2020. http://dx.doi.org/10.21611/qirt.2020.039.

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S. Y. Chiu, Lydia, Wallace W. L. Lai, and Miranda C. Y. Lui. "Developing Quantifiable Defect Record for Tall Building Envelop using Passive Infrared Thermography and Building Information Modelling." In 2020 Quantitative InfraRed Thermography. QIRT Council, 2020. http://dx.doi.org/10.21611/qirt.2020.108.

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Larbi Youcef, M. H. A., V. Feuillet, L. Ibos, Y. Candau, P. Balcon, and A. Filloux. "In situ quantitative diagnosis of insulated building walls using passive infrared thermography." In 2012 Quantitative InfraRed Thermography. QIRT Council, 2012. http://dx.doi.org/10.21611/qirt.2012.302.

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HA, T. T., L. IBOS, V. FEUILLET, Y. GARCIA, V. LE SANT, A. KOENEN, L. PEIFFER, R. BOUCHIE, and K. ZIBOUCHE. "Experimental works based on active and passive thermography for measuring the thermal resistance of building walls." In 2020 Quantitative InfraRed Thermography. QIRT Council, 2020. http://dx.doi.org/10.21611/qirt.2020.145.

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