Conference Agenda

High-Andean regions exhibit a marked mismatch between the availability of solar radiation during the day and the demand for heating at night, which calls for systems capable of storing thermal energy and managing it efficiently. This work evaluates the thermal performance of a solar heating system based on sensible thermal storage in a water tank, distribution through hydronic radiators, and automatic flow control, incorporating a conditional electric backup. The analysis considers continuous operation over seven days with a temporal resolution of 60 s, using representative profiles of solar irradiance and outdoor temperature for the Puno region. The system includes 6 m² of solar collectors, a 150 L storage tank, and a room modeled using lumped energy balances. The objective of the control system is to maintain an indoor temperature of 21 °C during the period of highest thermal demand (18:00–23:00), prioritizing the use of stored solar energy and limiting auxiliary consumption. The results show that the system maintains the indoor temperature within the thermal comfort range (20–22 °C) during 91.36% of the evaluated nighttime period, with a root mean square error of 1.67 °C relative to the setpoint and a weekly auxiliary energy consumption of 52.18 kWh. Design implications related to storage volume, building thermal losses, and radiator heat emission capacity are discussed, providing practical criteria for the implementation of solar heating systems in high-Andean dwellings.

This bibliographic and systematic review analyzes the perception of renewable energies in the context of sustainable mining, focusing on the social, environmental, and technological dimensions that influence their adoption. Through a rigorous selection and evaluation of relevant scientific articles published between 2015 and 2025, bibliometric and qualitative analyses were applied to identify key trends, influential authors, and the most cited publications. The results demonstrate that community participation, governance models, and public awareness are critical factors for the acceptance of renewable energy projects in mining regions. Additionally, economic and regulatory barriers are identified as significant challenges, while innovative solutions integrating circular economy principles and smart energy management show promising potential. This review highlights the importance of incorporating social engagement strategies to strengthen the sustainable energy transition in mining, offering valuable insights for policymakers, industry stakeholders, and academics interested in promoting environmental responsibility and social acceptance.

This research investigates the impact of incorporating ground bamboo (0 %, 0.5 %, 1 %, and 2 % by weight) on the compaction properties of clayey soils from Cajamarca, applying the modified Proctor test (ASTM D1557). Three representative soil samples (C1, C2, and C3) were fully characterized—granulometrically and plasto-hydraulically—prior to compaction testing. Baseline results without reinforcement showed a maximum dry density (MDD) between 1.291 and 1.432 g/cm³ and optimal moisture content (OMC) from 26.2 % to 35.0 %. The addition of 1 % bamboo produced significant increases in MDD—up to +3.64%—while 2 % bamboo consistently reduced density across all soil types, indicating an optimal reinforcement threshold around 1 %. Moisture content variations remained minor, reflecting the bamboo’s absorbent nature. These findings support the use of locally available, sustainable bamboo-based reinforcement to enhance the densification of clayey soils effectively.

The study focused on analyzing the influence of the plastic index (PI) on the optimum moisture content (Wopt) in clayey soils of the city of Cajamarca, Peru. Soil samples were analyzed in three pits located in different points of the Cajamarca district, and tests of grain size by washing, Atterberg limits and modified Proctor were carried out, following ASTM standards. A total of 9 strata were analyzed (3 per test pit), C1, C2 and C3, obtaining PI values of 2.34%, 23.68%, 20.80% and Wopt between 3.70%, 23.94 and 21.03%, respectively. The compaction curves showed that the higher the IP, the higher the moisture content required to reach the maximum dry density. The results show a direct correlation between PI and Wopt, allowing the establishment of an application curve that can be used as a predictive tool to improve the efficiency of compaction processes in civil engineering works. It is concluded that the plastic index is a determining parameter to estimate the mechanical behavior of clayey soils, contributing to better planning of projects in areas with cohesive soils.

This work proposes the geometric design and material selection of a box-type solar air collector, oriented to high-Andean conditions (Puno, Peru). The system incorporates an internal tubular serpentine that conducts the air flow in parallel passes, prioritizing manufacturability criteria (commercial tube, separation tolerances, and return radii) and thermal performance. The methodology integrates a first-order model based on energy balance, estimation of optical gain via (τα), and quantification of losses due to conduction, convection (internal and external), and radiation, employing standard correlations to obtain the convective coefficient. As a result, the final dimensions of the collector and the serpentine (number of passes, total length, and exchange area) are defined, together with relevant thermo-fluid parameters (Re,Nu, hi, and UA) for representative irradiance and flow rate scenarios. The design remains ready for its implementation and CAD documentation (SOLIDWORKS) and for a subsequent experimental validation under real conditions.

This paper examines the structural role of remittances as drivers of economic growth and macroeconomic stability in Honduras, El Salvador, Guatemala, Costa Rica, Nicaragua y Panamá, a region characterized by high exposure to external shocks and persistent dependence on external financial inflows. Using a panel data framework with country and time fixed effects and Driscoll–Kraay standard errors, the analysis evaluates whether remittance inflows contribute to growth dynamics and reduce output volatility. The results indicate that remittances are positively associated with per capita income growth and significantly reduce growth volatility, suggesting that these flows operate as a structural stabilizing mechanism. No statistically significant differential effect is observed during crisis periods, indicating that remittances primarily influence macroeconomic performance through long-run channels rather than short-term cyclical adjustments. The findings contribute to the literature by highlighting the role of remittances in strengthening economic resilience in small open economies.