Influence of HFM Thermal Contact on the Accuracy of In Situ Measurements of Façades’ U-Value in Operational Stage
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 betwe...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-01-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/11/3/979 |
| _version_ | 1797408620934070272 |
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| author | Katia Gaspar Miquel Casals Marta Gangolells |
| author_facet | Katia Gaspar Miquel Casals Marta Gangolells |
| author_sort | Katia Gaspar |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-03-09T04:01:09Z |
| format | Article |
| id | doaj.art-1a35409ec46640008b298501ce606ba1 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-09T04:01:09Z |
| publishDate | 2021-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-1a35409ec46640008b298501ce606ba12023-12-03T14:12:49ZengMDPI AGApplied Sciences2076-34172021-01-0111397910.3390/app11030979Influence of HFM Thermal Contact on the Accuracy of In Situ Measurements of Façades’ U-Value in Operational StageKatia Gaspar0Miquel Casals1Marta Gangolells2Group of Construction Research and Innovation (GRIC), Universitat Politècnica de Catalunya·BarcelonaTech (UPC), C/Colom, 11, Ed. TR5, 08222 Terrassa, SpainGroup of Construction Research and Innovation (GRIC), Universitat Politècnica de Catalunya·BarcelonaTech (UPC), C/Colom, 11, Ed. TR5, 08222 Terrassa, SpainGroup of Construction Research and Innovation (GRIC), Universitat Politècnica de Catalunya·BarcelonaTech (UPC), C/Colom, 11, Ed. TR5, 08222 Terrassa, SpainAccurate 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.https://www.mdpi.com/2076-3417/11/3/979non-destructive testmonitoringhousingbuildingsfaçadethermal transmittance |
| spellingShingle | Katia Gaspar Miquel Casals Marta Gangolells Influence of HFM Thermal Contact on the Accuracy of In Situ Measurements of Façades’ U-Value in Operational Stage Applied Sciences non-destructive test monitoring housing buildings façade thermal transmittance |
| title | Influence of HFM Thermal Contact on the Accuracy of In Situ Measurements of Façades’ U-Value in Operational Stage |
| title_full | Influence of HFM Thermal Contact on the Accuracy of In Situ Measurements of Façades’ U-Value in Operational Stage |
| title_fullStr | Influence of HFM Thermal Contact on the Accuracy of In Situ Measurements of Façades’ U-Value in Operational Stage |
| title_full_unstemmed | Influence of HFM Thermal Contact on the Accuracy of In Situ Measurements of Façades’ U-Value in Operational Stage |
| title_short | Influence of HFM Thermal Contact on the Accuracy of In Situ Measurements of Façades’ U-Value in Operational Stage |
| title_sort | influence of hfm thermal contact on the accuracy of in situ measurements of facades u value in operational stage |
| topic | non-destructive test monitoring housing buildings façade thermal transmittance |
| url | https://www.mdpi.com/2076-3417/11/3/979 |
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