A novel methodology for the characterisation of airflow using infrared thermography and pressurisation test
Year: 2025
Type: article
Abstract: Although buildings have reduced energy consumption in recent years, high levels remain, primarily due to HVAC systems. Air infiltration, which significantly impacts thermal comfort and energy efficiency, is critical. Pressurisation tests are widely used to assess the airtightness of building envelopes, but they do not identify the specific locations or shapes of air leaks.In this context, combining thermography with pressurisation tools shows significant potential. Thermography enables the visualisation of temperature differences caused by air leaks, while pressurisation tests provide general information on a building's permeability. This approach offers a more comprehensive understanding of building airtightness. However, the methodology currently only provides a general quantitative indication of permeability and locates some leaks. While promising, further research is required to enhance the precision and ability to quantify and address air leakage issues.This paper presents an experimental laboratory study to develop a methodology to characterise air infiltration. It uses a three-dimensional matrix placed near a controlled inlet, where cold air entering due to pressure differences alters the matrix's surface temperature. These changes are detected by infrared thermography, enabling accurate airflow characterisation. This approach effectively identifies and characterizes air leakage, providing valuable data for decision-making.
Source: Building and Environment
Authors: Diego Tamayo-Alonso, Alberto Meiss
Institution: Universidad de Valladolid
Language: English
Subfield: Building and Construction
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $4,280
OpenAlex ID: W4407115403