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Aerial Thermographic Image-Based Assessment of Thermal Bridges Using Representative Classifications and Calculations

Mayer, Zoe; Heuer, Julia; Volk, Rebekka; Schultmann, Frank

Abstract (englisch):
Since the middle of the 20th century many any buildings were built without any energy standards and still have a comparably poor energy quality. To obtain an overview of the current thermal quality of buildings in a whole city district, it may be promising to work with thermographic images obtained by unmanned aerial vehicles (UAV). Aerial thermography represents a fast and cost-efficient approach compared to traditional terrestrial thermography. In this paper, we describe an approach to finding thermal bridges on aerial thermographic images and characterizing them in terms of their risk of mold formation, energy losses, retrofit costs, and retrofit benefits. To identify thermal bridge types that can be detected reliably on aerial thermographic images, we use a dataset collected with a UAV in an urban district of the German city of Karlsruhe. We classify and characterize 14 relevant thermal bridge types for the German building cohorts of the 1950s and 1960s. Concerning the criterion of mold formation, thermal bridges of window components, basement ceiling slabs, balcony slabs, floor slabs, and attics are found to be particularly relevant to retrofit projects. ... mehr

Verlagsausgabe §
DOI: 10.5445/IR/1000140154
Veröffentlicht am 19.11.2021
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Industriebetriebslehre und Industrielle Produktion (IIP)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2021
Sprache Englisch
Identifikator ISSN: 1996-1073
KITopen-ID: 1000140154
Erschienen in Energies
Verlag MDPI
Band 14
Heft 21
Seiten Article no: 7360
Vorab online veröffentlicht am 05.11.2021
Schlagwörter buildings; energy retrofits; thermal bridges; thermography; energy assessment; drones; unmanned aerial vehicles (UAV)
Nachgewiesen in Web of Science
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