Analysis of the applicability of non-destructive techniques to determine in situ thermal transmittance in passive house façades
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 condit...
| Autores: | , , , |
|---|---|
| Tipo de recurso: | artículo |
| Fecha de publicación: | 2020 |
| País: | España |
| Institución: | Consejo General de la Arquitectura Técnica de España (CGATE) |
| Repositorio: | RIARTE |
| OAI Identifier: | oai:www.riarte.es:20.500.12251/1851 |
| Acceso en línea: | http://hdl.handle.net/20.500.12251/1851 https://doi.org/10.3390/app10238337 |
| Access Level: | acceso abierto |
| Palabra clave: | Eficiencia energética Edificación residencial Nearly Zero Energy Building (NZEB) Passivhaus Termografía infrarroja Países mediterráneos Emisiones de CO2 Ensayo No Destructivo (END) Flujo térmico Envolvente de edificio 3305.01 Diseño Arquitectónico 3305.90 Transmisión de Calor en la Edificación 3308.04 Ingeniería de la Contaminación 2213.08 Técnicas de Medida del Calor 3311.16 Instrumentos de Medida de la Temperatura |
| Sumario: | 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. © 2020 by the authors. Licensee MDPI, Basel, Switzerland. |
|---|