Classifying System for Façades and Anomalies

Gaspar, Kàtia; Casals, Miquel; Gangolells, Marta

doi:10.1061/(asce)cf.1943-5509.0000693

Cited by 21 publications

(8 citation statements)

References 33 publications

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“…According to Gaspar et al [44], Case study 1 is a single-skin façade with no air cavity or insulation, Case study 2 is classified as a double-skin façade with internal insulation but no air cavities, and Case study 3 is classified as a double-skin façade with a non-ventilated air cavity and internal insulation, finished with continuous covering. Façade 1 was built in 1960 and has a total thickness of 0.…”

Section: Case Studiesmentioning

confidence: 99%

Review of criteria for determining HFM minimum test duration

Gaspar

Casals

Gangolells

2018

Energy and Buildings

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The actual thermal behaviour of façades is important to identify suitable energy-saving measures and increase the energy performance of existing buildings. However, the accuracy of in situ measurements of façades' U-values varies widely, mostly due to inadequate test durations. The aim of this paper was to evaluate the minimum duration of in situ experimental campaigns to measure the thermal transmittance of existing buildings' façades using the heat flow meter method, and to analyse the thermal performance of the façade during the test. Minimum test duration was determined according to data quality criteria, variability of results criteria, and standardized criteria for different ranges of theoretical thermal transmittance and for the same range of average temperature difference. Then, the minimum test duration results were compared. The findings show that ISO criteria are more sensitive and provide more accurate results, requiring a longer test duration. However, when certification is not required, the duration of the test could be reduced by applying data quality and variability of results criteria. The minimum duration of experimental campaigns depends on the theoretical thermal transmittance and the stability of climatic conditions. Moreover, results are more accurate when the dynamic method is used.

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Section: Case Studiesmentioning

confidence: 99%

Review of criteria for determining HFM minimum test duration

Gaspar

Casals

Gangolells

2018

Energy and Buildings

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“…Case study 1 was built in 1960 and according to Gaspar et al [46] can be defined as a single-skin wall with no air cavity or insulation. This case study is located between an interior habitable zone and an interior non-habitable zone.…”

Section: Case Studiesmentioning

confidence: 99%

“…This case study is located between an interior habitable zone and an interior non-habitable zone. Case study 2 was built in 2005, it is a double-skin façade with internal insulation but no air cavities finished with continuous covering [46]. This case study is located between an indoor habitable zone and an outdoor zone.…”

Section: Case Studiesmentioning

confidence: 99%

Influence of HFM Thermal Contact on the Accuracy of In Situ Measurements of Façades’ U-Value in Operational Stage

2021

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Accurate information on the actual thermal transmittance of walls is vital to select appropriate energy-saving measures in existing buildings to meet the commitments of the European Green Deal. To obtain accurate results using the heat flow meter (HFM) method, good thermal contact must be made between the heat flow meter plate and the wall surface. This paper aimed to assess the influence of the non-perfect thermal contact of heat flow meter plates on the accuracy of in situ measurement of the façades’ U-value when a film was applied to avoid damage to the wall surface. Given the fact that to avoid harm to the wall surface, the laying of a film is a usual procedure in the installation of equipment during the building’s operational stage. The findings show that deviations between measured U-values when an HFM was installed directly on the wall surface and when an HFM was installed with a PVC film were found to differ significantly from the theoretical effect of including a PVC film during the monitoring process.

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“… Section 2: The second part contained several questions regarding the technical performance of construction elements and systems. A list of potential defects that might appear in each building element and system based on existing studies [10,13,22,24,[26][27][28][29][30][31] was provided to interviewees (see Appendix A). Interviewees were asked to select at most 3 main defects for each building element and system and it was given the option of adding other defects they considered relevant.…”

Section: Questionnaire Surveymentioning

confidence: 99%

Building Inspection System for Evaluating the Technical Performance of Existing Buildings

Bortolini

Forcada

2018

J. Perform. Constr. Facil.

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The technical performance assessment of a building is essential for planning maintenance actions to improve its condition and functionality. The aim of this study is to present a Building Inspection System to evaluate the technical performance of existing buildings. To do so, a questionnaire survey to identify the defects that majoritarily affect the technical performance of a building was conducted. The system was then validated in a university campus including 22 buildings. The results revealed three main applications of the proposed system: a comprehensive asset analysis, a building operating analysis and a risk analysis system.

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Classifying System for Façades and Anomalies

Cited by 21 publications

References 33 publications

Review of criteria for determining HFM minimum test duration

Review of criteria for determining HFM minimum test duration

Influence of HFM Thermal Contact on the Accuracy of In Situ Measurements of Façades’ U-Value in Operational Stage

Building Inspection System for Evaluating the Technical Performance of Existing Buildings

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