Polymer aerogels reinforced with carbon nanofibers and alumina aerogels reinforced with hydroxyethyl-cellulose have been successfully synthesized by means of a pilot plant freeze-drying process. Their main physicochemical properties have been measured and compared, and their production costs have been computed. The SWOT matrix of the process has been determined from internal and external analyses, revealing the interest of these products as building insulation materials and the need of establishing a detailed economic analysis. A homemade Excel-VBA application was designed in order to determine the economic parameters of the freeze-drying process. As a consequence of the total economic and physicochemical analysis, it was concluded that the production of aerogels reinforced with hydroxyethyl-cellulose could only be recommended if they are used as an insulating material in buildings with higher thermal stability requirements. Se han sintetizado con éxito aerogeles poliméricos reforzados con nanofibras de carbono y aerogeles de alúmina reforzados con hidroxietilcelulosa mediante un proceso de liofilización en planta piloto. Se han medido y comparado sus principales propiedades fisicoquímicas y se han calculado sus costes de producción. La matriz DAFO del proceso se ha determinado a partir de análisis internos y externos, revelando el interés de estos productos como materiales aislantes para la construcción y la necesidad de establecer un análisis económico detallado. Se diseñó una aplicación Excel-VBA casera para determinar los parámetros económicos del proceso de liofilización. Como consecuencia del análisis económico y fisicoquímico total