Think Trespa Magazine建材

THE TWO BUILDINGS IN WINTER AND SUMMER (SOURCE: EFCORE) JULY 2014 e Trespa® Meteon® surface (le ) is at a higher temperature than the exterior (28°C), while the concrete surface (right) is similar. FEBRUARY 2014 e Trespa® Meteon® surface (le ) is at a similar temperature than the exterior (12°C), while the concrete surface (right) has a higher temperature. Le building was clad in 1992 with Trespa® Meteon® a er an extensive renovation. e building on the right has its original 1960’s concrete façade. e two buildings of the Department of Chemistry at the UAB’s Bellaterra campus. On the le is the renovated structure with Trespa® Meteon®, to the right the one still in its original state. Trespa façade Concrete façade Trespa façade Concrete façade Trespa façade Concrete façade Trespa façade Concrete façade LOOK-ALIKE BUILDINGS De ned by a typical 1960’s architectural style, the ve-storey buildings were built with precast concrete sandwich wall panels with no insulation. ey both use a central heating system during winter months. Apart from the façade, the two constructions have the same if not almost identical characteristics in terms of geographical orientation, interior conditions, use, height, occupancy, maintenance service, management and end users. ese elements are the ones that could distort the results of a comparative study. Also, there were no adjacent nor nearby buildings that could in uence the measurements. “We couldn’t have found better conditions to do the thermographic study, because all the characteristics were the same with the exception of the ventilated façade, which was the object of the study,” explains Viola i González. A er an initial analysis of the emissivity of the façade materials, which guaranteed the reliability of the images, Efcore took a series of thermal images in February 2014, and a second set in July of the same year. is allowed Viola i González and technical architect Josep Lluís Escobedo i Parés to analyse the behaviour of both buildings during winter and summer. OPPOSITE RESULTS According to the thermographic images, during summer months, the temperature of the concrete façade’s exterior surface is very close to the outside temperature. e opposite happens during winter, where the concrete surface temperature is higher than the outside temperature. Without insulation, heat goes from indoor to outdoor instead of remaining inside. Additionally, there are notable temperature 22 Build Trespa