Energies 2013, 6(8), 3859-3878; doi:10.3390/en6083859
Article

Infrared Screening of Residential Buildings for Energy Audit Purposes: Results of a Field Test

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Received: 3 July 2013; in revised form: 20 July 2013 / Accepted: 22 July 2013 / Published: 30 July 2013
(This article belongs to the Special Issue Energy Efficient Building Design 2013)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: In the European Union (EU), the building sector is responsible for approximately 40% of total energy consumption. The existing building stock is inefficient and can, and indeed must be retrofitted to address this issue. The practical implementation of the European strategies requires knowledge of the energy performance of existing buildings through energy audit techniques. Application of thermography in the fields of energy are very widespread, since, through such a non-invasive investigation, and through correct interpretation of infrared images, it is possible to highlight inefficiencies in buildings and related facilities. The paper shows and discusses the results of an infrared audit campaign on 14 existing buildings located in Milan Province (Italy) made in different construction periods and characterised, therefore, by different building technologies. The U-values obtained in an indirect way through the thermography of the opaque walls of the buildings investigated, were compared with the actual known values in order to verify the reliability of the method and the possible margin of error. The study indicated that the category of buildings in which the application of this method is sufficiently reliable is that of solid-mass structure buildings, the most widespread in Italy, whereas in the case of buildings whose external walls are insulated, the percentage of deviation is very high.
Keywords: energy efficiency; infrared screening; thermography applications; energy audit of buildings; U-value measure; infrared audit; convective heat transfer coefficient
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MDPI and ACS Style

Dall'O', G.; Sarto, L.; Panza, A. Infrared Screening of Residential Buildings for Energy Audit Purposes: Results of a Field Test. Energies 2013, 6, 3859-3878.

AMA Style

Dall'O' G, Sarto L, Panza A. Infrared Screening of Residential Buildings for Energy Audit Purposes: Results of a Field Test. Energies. 2013; 6(8):3859-3878.

Chicago/Turabian Style

Dall'O', Giuliano; Sarto, Luca; Panza, Angela. 2013. "Infrared Screening of Residential Buildings for Energy Audit Purposes: Results of a Field Test." Energies 6, no. 8: 3859-3878.

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