Browsing by Author "Vasco, Diego A."

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    Applicability of Paper and Pulp Industry Waste for Manufacturing Mycelium-Based Materials for Thermoacoustic Insulation
    (2024) Munoz, Hugo; Molina, Paulo; Urzua-Parra, Ignacio A.; Vasco, Diego A.; Walczak, Magdalena; Rodriguez-Grau, Gonzalo; Chateau, Francisco; Sancy, Mamie
    Cellulose and paper produce significant waste such as ash, activated sludge, and sludge from the pulp and paper industry. Depending on the raw material, legislation, and subprocesses, these sludges contain around 30-50% organic matter, mainly composed of less than 0.02 mm cellulose fibers and hemicellulose and lignin. This work used sludge from the pulp and paper industry as a substrate for manufacturing mycelium-based biomaterials using the white rot fungus Trametes versicolor. Chemical and surface analyses revealed the formation of new materials. Acoustic impedance analyses revealed that these materials have a noise reduction coefficient and sound absorption average comparable to extruded polystyrene and polyurethane. In addition, the material's thermal conductivity was near that of sheep wool. Therefore, the biomaterials fabricated using sludge and Trametes versicolor have the potential to be a game-changer in the industry as promising thermoacoustic insulators.
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    Enhancement of Thermal–Acoustic Properties of Pinus radiata by Impregnation of Bio-Phase-Change Materials
    (2025) Ayala Molina, Paulo Antonio; Sancy Velasquéz, Mamie Odette; Sève, Gabrielle; Córdova, Deborah; Erazo Valdés, Ignacio Adolfo; Sepúlveda-Vásquez, Carlos; Di Mambro, Flores David; George, Kesiya; Urzúa-Parra, Ignacio A.; Vasco, Diego A.; Gonzalo José, Rodríguez Grau
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    Feasibility study of the application of a cooling energy storage system in a chiller plant of an office building located in Santiago, Chile
    (2019) Venegas-Troncoso, Tomas; Ugarte-Larraguibel, Gaspar; Vasco, Diego A.; Rouault, Fabien; Perez, Rodrigo
    Energy consumption of commercial buildings has increasingly gained attention worldwide, because of its significant electricity consumption and peak power demand. Chiller plants are mostly used in commercial buildings to generate cold water for air conditioning. However, because the chiller plants and the refrigeration systems tend to be oversized with respect to their critical design load conditions, they certainly lead to higher energy consumption than a properly sized chiller plant. One possible way to reduce the power consumption and redistribute energy use is through the integration of latent heat thermal energy storage (LHTES) systems with air-cooling system in buildings. In the present work, a LHTES system based on ice is implemented along with a conventional chiller system of an existing commercial building located in Santiago, Chile. Different strategies of operation in a design day are assessed by computational simulation with EnergyPlus. A hybrid operation strategy is evaluated for the hottest summer week, and the results of the cooling loads are obtained. Finally, we founded that the implementation of a LHTES reduces by 7.8% the cooling energy consumption of the cooling system during the analyzed period. (C) 2019 Elsevier Ltd and IIR. All rights reserved.