Infrared Imaging as a Means of Analyzing and Improving Energy Efficiency of Building Envelopes: The case of a LEED Gold Building

Taileb, Ali; Dekkiche, Hamoud

doi:10.1016/j.proeng.2015.08.497

Cited by 18 publications

(9 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…A termografia de infravermelho é um método de diagnóstico que tem uma ampla gama de aplicabilidade para avaliação de questões como a continuidade do isolamento e da eficiência energética da envoltória, identificação de locais de infiltração de ar e monitoramento da temperatura do ar interior (BRÁS; ROCHA; FAUSTINO, 2015;TAILEB;DEKKICHE, 2015). Também se aplica ao diagnóstico das propriedades térmicas da envoltória do edifício (FOKAIDES; KALOGIROU, 2011).…”

Section: Medição De Temperaturas Superficiais Por Termografia De Infrunclassified

Desempenho térmico e absortância solar de telhas de fibrocimento sem amianto submetidas a diferentes processos de envelhecimento natural

2017

View full text Add to dashboard Cite

Resumo As telhas de fibrocimento, ao longo de sua vida útil, passam por três processos de envelhecimento natural que podem alterar a absortância solar de sua superfície e o seu desempenho térmico: a carbonatação, a eflorescência e o desenvolvimento de fungos. Com o objetivo de identificar o impacto desses processos sobre sua absortância e seu desempenho térmico, esta pesquisa incluiu três etapas: a) determinação dos processos de envelhecimento natural em telhas com idades de 28 dias e após 36 meses de exposição; b) medição de temperaturas superficiais por termografia; e c) ensaios de refletância com espectrofotômetro para cálculo da absortância solar. Os resultados indicaram que, após 36 meses de envelhecimento natural, a carbonatação reduziu as absortâncias e as temperaturas superficiais das telhas quando comparadas com as telhas novas de 28 dias. Entretanto, as telhas com fungos após 36 meses apresentaram aumento nas absortâncias e temperaturas superficiais, indicando que a presença de fungos pode incrementar os ganhos de calor solar pelas edificações. Os resultados comprovam que os processos de envelhecimento natural de telhas de fibrocimento alteram consideravelmente seu desempenho térmico ao longo da vida útil de uma edificação.

show abstract

Section: Medição De Temperaturas Superficiais Por Termografia De Infrunclassified

Desempenho térmico e absortância solar de telhas de fibrocimento sem amianto submetidas a diferentes processos de envelhecimento natural

2017

View full text Add to dashboard Cite

show abstract

“…The system is convenient for not only medicine but also technology and science: thermal 3D scanning procedures are usable in, for example, electrical engineering to ensure thermal analyses centered on the efficiency of electrical components [ 48 ]; civil engineering to monitor thermal loss in materials [ 49 ]; mechanical engineering to investigate mechanical strain [ 50 ]; and rescue robotics or experimental biology to evaluate the indispensable life functions [ 51 , 52 , 53 ].…”

Section: Discussionmentioning

confidence: 99%

The RoScan Thermal 3D Body Scanning System: Medical Applicability and Benefits for Unobtrusive Sensing and Objective Diagnosis

Chromý

Žalud

2020

Sensors

View full text Add to dashboard Cite

The RoScan is a novel, high-accuracy multispectral surface scanning system producing colored 3D models that include a thermal layer. (1) Background: at present, medicine still exhibits a lack of objective diagnostic methods. As many diseases involve thermal changes, thermography may appear to be a convenient technique for the given purpose; however, there are three limiting problems: exact localization, resolution vs. range, and impossibility of quantification. (2) Methods: the basic principles and benefits of the system are described. The procedures rely on a robotic manipulator with multiple sensors to create a multispectral 3D model. Importantly, the structure is robust, scene-independent, and features quantifiable measurement uncertainty; thus, all of the above problems of medical thermography are resolved. (3) Results: the benefits were demonstrated by several pilot case studies: medicament efficacy assessment in dermatology, objective recovery progress assessment in traumatology, applied force quantification in forensic sciences, exact localization of the cause of pain in physiotherapy, objective assessment of atopic dermatitis, and soft tissue volumetric measurements. (4) Conclusion: the RoScan addresses medical quantification, which embodies a frequent problem in several medical sectors, and can deliver new, objective information to improve the quality of healthcare and to eliminate false diagnoses.

show abstract

“…IRT in building sector is used to qualitatively evaluate buildings and detect defects, [33] such as the thermal bridges applied in this research. Those defects were places where air leakage typically occurs [34][35][36][37], cracks [38], insulation continuity [35,39], thermal bridges [35,40,41], plaster detachment [42], moisture and condensation [36,38,[43][44][45], delamination [38,46], defective services [39], and as a support when con- The first airtightness measurement result was n 50 = 10.23 h −1 , thus improvements of places where leakages were found were required. Those places in the test chamber and the wall itself were detected by using a smoking pen during the test.…”

Section: In-situ Measurement Of Airtightness and Infrared Thermography Methodsmentioning

confidence: 99%

“…IRT in building sector is used to qualitatively evaluate buildings and detect defects, [33] such as the thermal bridges applied in this research. Those defects were places where air leakage typically occurs [34][35][36][37], cracks [38], insulation continuity [35,39], thermal bridges [35,40,41], plaster detachment [42], moisture and condensation [36,38,[43][44][45], delamination [38,46], defective services [39], and as a support when conducting thermal transmission measurements, with respect to the location of the instrument sensors [47][48][49]. It is important to avoid these places (or to remediate them) when placing sensors used in this research; these are the sensors used by the heat flow method (HFM) and temperature-based method (TBM) for estimating the thermal transmission properties of the wall.…”

Section: In-situ Measurement Of Airtightness and Infrared Thermography Methodsmentioning

confidence: 99%

Thermal Performance Assessment of a Wall Made of Lightweight Concrete Blocks with Recycled Brick and Ground Polystyrene

et al. 2021

View full text Add to dashboard Cite

Hollow concrete masonry blocks made of low strength self-compacting concrete with recycled crushed brick and ground polystyrene as an aggregate (RBC-EP blocks), and their expected structural role as masonry infill in steel frames, has been confirmed in previous research studies, thus the extensive investigation of thermal properties is presented in this paper to fully approve their potential application in practice. The Heat Flow and Temperature Based Method was used to conduct in-situ measurements of the wall thermal transmittance (U-value). The experimental U-values of the wall without insulation varied from 1.363 to 1.782 W/m2·K, and the theoretical value was calculated to be 2.01 W/m2·K. Thermal conductivity of the material used for making RBC-EP blocks was measured in a laboratory by using a heat flow meter instrument. To better understand the thermal performance characteristics of a wall constructed from RBC-EP blocks, a comparison with standard materials currently used and found on the market was performed. Walls constructed from RBC-EP blocks show an improvement of building technology and environmentally based enhancement of concrete blocks, since they use recycled materials. They can replace standard lightweight concrete blocks due to their desired mechanical properties, as well as the better thermal performance properties compared to commonly used materials for building walls.

show abstract

Infrared Imaging as a Means of Analyzing and Improving Energy Efficiency of Building Envelopes: The case of a LEED Gold Building

Cited by 18 publications

References 7 publications

Desempenho térmico e absortância solar de telhas de fibrocimento sem amianto submetidas a diferentes processos de envelhecimento natural

Desempenho térmico e absortância solar de telhas de fibrocimento sem amianto submetidas a diferentes processos de envelhecimento natural

The RoScan Thermal 3D Body Scanning System: Medical Applicability and Benefits for Unobtrusive Sensing and Objective Diagnosis

Thermal Performance Assessment of a Wall Made of Lightweight Concrete Blocks with Recycled Brick and Ground Polystyrene

Contact Info

Product

Resources

About