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espanolLas ventanas influyen de manera significativa en las demandas energeticas para calefaccion, refrigeracion e iluminacion de los edificios. En este trabajo, se caracterizan las propiedades energeticas de las tecnologias de ventanas disponibles en Argentina, mediante el calculo de sus indices K, FS y TV (transmitancia termica, factor solar y transmitancia visible). Se analiza, ademas, el impacto que tienen diversos parametros, como las dimensiones de la abertura, la tipologia, el material y la absortancia solar del marco, sobre los indices mencionados. Los casos de estudio se seleccionaron cuidadosamente para asegurar una buena representatividad de la muestra analizada, utilizando, en particular, el metodo de analisis de conglomerados. El calculo de los indices se realizo con el apoyo de los programas WINDOW 6.3 y THERM 6.3. Los resultados indican que los valores de K estan comprendidos entre 1.88 y 6.00 W/m2K, mientras que los valores de FS varian entre 0.08 y 0.80, y los de TV entre 0.03 y 0.80, segun el material del marco, la tipologia y el tipo de vidriado. EnglishWindows significantly impact the energy demand for heating, cooling and lighting in buildings. This study characterizes the energy properties of window technologies available in Argentina by calculating their thermal transmittance (U), solar heat gain coefficient (SHGC) and visible transmittance (VT). Additionally, the impact of different parameters like window opening dimensions, typology, frame material and solar absorptance on the mentioned indices is analyzed. Case studies were selected carefully using cluster analysis methods in order to ensure that the sample examined was representative. The calculation of the U, SHGC and VT indices was carried out using WINDOW 6.3 and THERM 6.3 software. The results indicate that U-values are between 1.88 and 6.00 W/m2K, while SHGC values vary between 0.08 and 0.80, and VT values are between 0.03 and 0.80, depending on frame material, typology and glazing characteristics.

Propiedades energéticas de tecnologías de ventanas en Argentina