Assessment of the risk of surface condensation on cultural heritage mechanical brick facades: the importance of surface temperature measurement. The case of a historic building in Valladolid.

Abstract

[EN] The assessment of the risk of surface condensation on the walls of Cultural Heritage buildings is crucial, since it has been identified that the analytical method used for new buildings can generate errors in these properties. The objective of this research is therefore focused on comparing the differences in surface temperatures between those calculated by the analytical method and those obtained by the in situ measurement. For its determination, the ambient and surface temperatures of the facade of a historic building have been measured, and heat flow tests have been carried out to estimate the conductivity of the walls. By contrasting the results obtained with the data calculated from the analytical system, it is concluded that this method is not entirely valid for this type of building.

[ES] La evaluación del riesgo de condensación superficial en las paredes de edificios de patrimonio cultural es crucial, ya que se ha constatado que el método analítico empleado en edificios nuevos puede generar errores en estas propiedades. Por consiguiente, el objetivo de esta investigación se centra en comparar las diferencias de temperatura superficial entre las calculadas mediante el método analítico y las obtenidas mediante mediciones in situ. Para ello, se midieron las temperaturas ambiente y superficial de la fachada de un edificio histórico y se realizaron ensayos de flujo de calor para estimar la conductividad de las paredes. Al contrastar los resultados obtenidos con los datos calculados mediante el sistema analítico, se concluye que este método no es del todo válido para este tipo de edificios.