Monitoring thermal bridges by infrared thermography

Abstract

In some sections of the building envelope, either structural or formal reasons, or different thermal characteristics of components, higher heat transfer occurs lowering the overall thermal resistance of the building envelope and increasing the heating and cooling energy expenditure. Depending on the location and size of thermal bridges, the overall heat transfer coefficient of the building envelope increases while energy efficiency, user comfort and indoor air quality are negatively affected. This paper focuses on thermal performance assessment of an existing building by in situ measurements of its external envelope using passive IR thermography. A series of facade inspections were conducted particularly considering the interrelations of external walls, floor slabs, roof, RC framework and wall openings which is partly presented here. IR thermography imaging results including thermal bridges are briefly explained and discussed qualitatively through gathered information based on architectural features of the case building and conditions of the surrounding environment together with the technical data collected during the construction phase of the building.