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Item type:Publication, Attempts for an effective renewable-energy knowledge transfer at Peruvian universities(IGI Global, 2021-01-25)Researchers at Peruvian universities are looking for opportunities to effectively interact with business enterprises and communities. They have also looked for government funding for these initiatives. These interactions are governed by the “triple-helix” concept of university-company-government interaction. Research groups in both the public and private sectors are trying to implement these links. In the present work, the authors evaluate a sample of Peruvian university research groups that study renewable-energy topics. The methodology considers case studies at five Peruvian universities. A model is proposed according the third academic revolution for accelerating interactions, research, innovations, and publications on the renewable-energy topic. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Renewable energy based smart grid construction using hybrid design in control system with enhancing of energy efficiency of electronic converters for power electronic in electric vehicles(Hindawi Limited, 2022-01-01)The power electronic interface is critical in matching a distributed generation (DG) unit's characteristics to grid requirements as most DG technologies rely on renewable energy. Increased adoption of electric vehicles (EV) is seen as a positive step toward minimizing air pollution as well as carbon emissions. Rapid proliferation of electric vehicles as well as charging stations has exacerbated voltage quality as well as harmonic distortion difficulties, which harm the efficiency of combined renewable energy. This research proposes novel hybrid design techniques in control systems that enhance the energy efficiency of electronic converters for power electronics. The control system enhancement has been carried out using a hybrid energy storage electric convertor, and energy efficiency is improved using a synergetic battery reference adaptive controller. A plug-in hybrid electric vehicle (PHEV)'s internal combustion engine with a small photovoltaic (PV) module is utilised to assess a proposed control method which effectively regulates electric power on-grid by draining electricity from batteries during peak hours as well as then charging them during off-peak times, lowering the load on the converter as well as allowing electric vehicles to charge faster. Experimental results show the constant acceleration case obtained battery current of 92 Amps, ultracapacitor current of 89 Amps, charging voltage of 88 V, DC load current of 85 Amps, battery SOC of 72%, and the time-varying acceleration proposed technique obtained current of 94 Amps, and ultracapacitor current of 90 Amps, charging voltage of 90 V, DC load current of 82 Amps, battery SOC of 79%. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Mathematical modelling of coupled and decoupled water electrolysis systems based on existing theoretical and experimental studies(Elsevier Ltd, 2022-05-08)Since it has the potential to significantly reduce gaseous emissions in the near future, electrolytic hydrogen production using electricity generated from renewable energy sources, such as solar radiation, is key. Water splitting processes occurring in electrolyzer cells are complex phenomena. Therefore, to fully realize such processes, different technologies have been accounted for. The focus of this work is on the mathematical modeling of three different electrolyzer cells related technologies, (i) alkaline, (ii) proton exchange membrane (PEM), and (iii) decoupled water splitting. Accordingly, several existing mathematical models for alkaline and PEM electrolyzers are initially revised. Next, a comprehensive mathematical model capable of properly predicting the performance of the three electrolyzer technologies accounted for here is proposed. The developed mathematical models are then used to predict the behavior of electrolyzer cells under different operation conditions. The obtained results are finally compared in terms of cell voltages, cell efficiencies, and hydrogen production rates. When compared to other results available in the literature, the cell voltage ones obtained using the new proposed model are in relatively good agreement. Specifically, for a current density range of 0–200 mA/cm2, cell pressures between 10 and 40 bar, and a cell temperature of 60 °C, cell voltage requirements are between 1.25 and 1.75 V, with the E-TAC technology performing better than the other two ones accounted for. In addition, for current densities of more than 100 mA/cm2 and cell pressures below 5 bar, Faraday's efficiencies are almost the same for all three technologies, i.e., about 95%. However, for higher cell pressures, significant differences in Faraday's efficiency appear. Based on the work carried out, it is concluded that developing a sound mathematical model is crucial both for the comprehension of coupled and decoupled water electrolysis-related processes and for their use in the simplest and most reliable way. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Clean energy transition in Peru: A green hydrogen perspective(2022-12-22)For anyone concerned about climate change, fostering the energy transition from fossil-based to low- or zero-carbon energy sources is a must. In this context, this work provides a brief overview of the clean energy transition in Peru, accounting for a green hydrogen perspective. Accordingly, after the corresponding introduction to the subject, the current situation of renewable energies in Peru is highlighted, along with their historical evolution during the last two decades or so, and the prospects for these more environmentally friendly energy sources in the following years. Next, the potential for renewable energy production in Peru is discussed, with especial emphasis on hydropower, wind, solar, and biomass. Finally, green hydrogen and its potential to contribute to the energy transition in Peru is addressed. A particular emphasis is put in this case on the production of green hydrogen and its applications in Peru and worldwide. From the discussions carried out in this work, it is concluded that, although Peru has a large potential to become a green hydrogen producing and exporting country, there is still a long way to go before Peru can achieve the desired carbon neutrality in the coming decades. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Effective Thermal-Electric Control System for Hydrogen Production Based on Renewable Solar Energy(Elsevier BV, 2023-12-14)This paper focuses on the design and use of a control system for a renewable energy production plant based on hydrogen. The proposed control system aims at ensuring the stability and smooth functionality of the plant, which consists of a (i) photovoltaic... - Some of the metrics are blocked by yourconsent settings
Item type:Publication, A surface geothermal system application to improve the lacting sow welfare(Learning Gate, 2025-03-13)In this study, a thermally controlled sow nursery was developed and implemented using surface geothermal energy for sow ventilation and photovoltaic energy for heating the suckling piglets. The geothermal system consisted of two fans that sucked ambient air and conducted it through the coil buried at 3 meters, cooling the ambient air through heat transfer to the ground. A hot environment was simulated, achieving an air input temperature of 40°C for the geothermal system. Additionally, a heating system was installed with electric resistances on a metal plate to provide heat to the babies. At temperatures between 33 and 42°C, the tendency of the temperature difference between inlet (environment) and outlet is greater and its tendency to growth (meaning cooling); while during the use of the bypass (the coil is not used) the difference shows a stable and horizontal trend without growth. The temperature of the surface of the heating bed fluctuated between 28 and 33°C, with piglet preference observed for the heating bed, which suggests that the space provided adequate temperatures for its growth stage. The results suggest that the buried coil cools the hot intake air and could help in areas with high environment temperatures.1