Facultad de Ciencias, Ingeniería y Construcción
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Item type:Publication, Thermodynamics-Informed Neural Networks for the Design of Solar Collectors: An Application on Water Heating in the Highland Areas of the AndesThis study addresses the challenge of optimizing flat-plate solar collector design, traditionally reliant on trial-and-error and simplified engineering design methods. We propose using physics-informed neural networks (PINNs) to predict optimal design conditions in a range of data that not only characterized the highlands of Ecuador but also similar geographical locations. The model integrates three interconnected neural networks to predict global collector efficiency by considering atmospheric, geometric, and physical variables, including overall loss coefficient, efficiency factors, outlet fluid temperature, and useful heat gain. The PINNs model surpasses traditional simplified thermodynamic equations employed in engineering design by effectively integrating thermodynamic principles with data-driven insights, offering more accurate modeling of nonlinear phenomena. This approach enhances the precision of solar collector performance predictions, making it particularly valuable for optimizing designs in Ecuador’s highlands and similar regions with unique climatic conditions. The ANN predicted a collector overall loss coefficient of 5.199 W/(m2·K), closely matching the thermodynamic model’s 5.189 W/(m2·K), with similar accuracy in collector useful energy gain (722.85 W) and global collector efficiency (33.68%). Although the PINNs model showed minor discrepancies in certain parameters, it outperformed traditional methods in capturing the complex, nonlinear behavior of the data set, especially in predicting outlet fluid temperature (55.05 °C vs. 67.22 °C).Scopus© Citations 6 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Towards a more accurate characterization of granular media 2.0: Involving AI in the process(Elsevier BV, 2023-08)Scopus© Citations 12 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Parametric Research of Granular Flow in Silos: A Micro- Mechanical Approach(Escuela Politecnica Nacional, 2023-11-14); Scopus© Citations 1 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, A generalized 3DLS-DEM scheme for grain breakage(Elsevier BV, 2022-09)Scopus© Citations 13 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, In Pursuit of Healthier Learning Environments: High‐Altitude Classroom Ventilation(Wiley, 2024-01); Scopus© Citations 1 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Morphological characterization of the hippocampus: a first database in Ecuador(Frontiers Media SA, 2024-10-18) - Some of the metrics are blocked by yourconsent settings
Item type:Publication, A Circular Bioeconomy Approach to Using Post-Bioadsorbent Materials Intended for the Removal of Domestic Wastewater Contaminants as Potential Reinforcements(MDPI AG, 2024-06-27)Scopus© Citations 5 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, The Influence of Abaca Fiber Treated with Sodium Hydroxide on the Deformation Coefficients Cc, Cs, and Cv of Organic Soils(MDPI AG, 2024-10-15); Andreína Damián ChalánThis study shows the influence of the inclusion of abaca fiber (Musa Textilis) on the coefficients of consolidation, expansion, and compression for normally consolidated clayey silt organic soil specimens using reconstituted samples. For this purpose, abaca fiber was added according to the dry mass of the soil, in lengths (5, 10, and 15 mm) and concentrations (0.5, 1.0, and 1.5%) subjected to a curing process with sodium hydroxide (NaOH). The virgin and fiber-added soil samples were reconstituted as slurry, and one-dimensional consolidation tests were performed in accordance with ASTM D2435. The results showed a reduction in void ratio (compared to the soil without fiber) and an increase in the coefficient of consolidation (Cv) as a function of fiber concentration and length, with values corresponding to 1.5% and 15 mm increasing from 75.16 to 144.51 cm2/s. Although no significant values were obtained for the compression and expansion coefficients, it was assumed that the soil maintained its compressibility. The statistical analysis employed hierarchical linear models to assess the significance of the effects of incorporating fibers of varying lengths and percentages on the coefficients, comparing them with the control samples. Concurrently, mixed linear models were utilized to evaluate the influence of the methods for obtaining the Cv, revealing that Taylor’s method yielded more conservative values, whereas the Casagrande method produced higher values.Scopus© Citations 3 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Ultralong Spin Lifetime in Light Alkali Atom Doped Graphene(American Chemical Society (ACS), 2020-06-02)Scopus© Citations 19 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Environmental Impact of Earthquake-Resistant Design: A Sustainable Approach to Structural Response in High Seismic Risk Regions(MDPI AG, 2024-11-28); This study evaluates the environmental impact of earthquake-resistant structural design choices in high-risk seismic regions through life cycle assessment. As climate change concerns intensify, understanding the environmental implications of structural design decisions becomes crucial for sustainable construction. Examining a building in Quito, Ecuador, the research compares three structural systems: Optimized Framed System (OFS), Optimized Dual System (ODS), and Equivalent Framed System (EFS). The assessment quantifies emissions through a ‘cradle to gate’ approach, encompassing materials fabrication, transportation, and construction processes. The results demonstrate that the ODS achieves optimal seismic performance equal to the EFS while reducing emissions by 38%, with only 5% higher emissions than the OFS. The findings establish that effective earthquake-resistant design can simultaneously achieve structural resilience and environmental sustainability, providing valuable insights for sustainable structural engineering practices in seismic regions.Scopus© Citations 8