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espanolEl objetivo de este trabajo es valorar la utilidad de la termografia infrarroja para diagnosticar en forma rapida el desempeno termico de edificios existentes. Se selecciono, para ello, un caso de estudio representativo de vivienda en la ciudad de Mendoza (32o40’LS, 68o51’LO, 750msnm) y se procedio a la toma de imagenes termograficas con una camara de bajo costo (FLIR i3), en dos momentos del dia: en la tarde-noche (8 pm) y en la manana, temprano, (7am), de modo de evitar posibles errores debidos a la incidencia de radiacion solar directa. La emisividad se introdujo en la camara de acuerdo con estudios de materiales locales. Al mismo tiempo, se realizaron mediciones continuas de temperatura del aire dentro y fuera de la vivienda con micro-adquisidores, con el objeto de contrastar los resultados obtenidos mediante la exploracion termografica. Dado que el caso de estudio tiene una inercia termica alta, las imagenes tomadas durante la tarde-noche muestran en una mayor medida los distintos comportamientos de los materiales de construccion. Se concluye que la termografia infrarroja resulta una herramienta valiosa para un diagnostico termico rapido en la certificacion edilicia, si se sigue un protocolo especifico que permita obtener resultados confiables. EnglishThe aim of the paper is to assess the usefulness of infrared thermography for a quick diagnostic of the thermal performance of the existing building stock. A representative housing case study in the city of Mendoza (32o40’SL, 68o51’WL, 750m above sea level) was selected and infrared imaging was carried out with a low cost thermograph camera (FLIR i3) at two times every day, in the late evening (8 pm) and in the early morning (7 am), for avoiding possible mistakes due to incident direct solar radiation. Emissivity was introduced in the camera according with local material studies. At the same time continuous measurement of air temperature inside and outside were taken with data-loggers with the objective of examining in detail the obtained results by the thermographic survey. Because the case studied has a high thermal inertia the survey in the evening shows better the different behaviour of construction materials. It is concluded that the thermogaphic survey resulted a valuable tool for quick thermal diagnostic in building certification if a specific protocol is followed in order to obtain accurate results.

Termografía infrarroja para el diagnóstico térmico confiable con alta replicabilidad y bajo costo de viviendas en Mendoza, Argentina