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AIP Conference Proceedings [Author(s) SolarPACES 2017: International Conference on Concentrating Solar Power and Chemical Energy Systems - Santiago, Chile (26–29 September 2017)] - Potential of solar central tower systems for thermal applications in the production chain of copper by pyrometallurgical route
摘要： Copper is an indispensable input element in most economic sectors. However, its production chain has significant and adverse consequences on the environment. Through pyrometallurgical route it is estimated that each kilogram of refined copper consumes 33 MJ and generates a footprint of 3.3 kg of CO2. Primary production projections for 2019 amount to 26,500 kT, of which 79% will be by pyrometallurgical route. It is a responsibility of the industry to makes the process more environmental friendly. This can be done replacing the current energy matrix by the use of renewable energy. In this first and preliminary work we are evaluating the technical potential to integrate Central Tower Plants (CTP) into the smelting stage as a solar energy source. According to the mineral books and the irradiation maps, almost 20% of the current production can be match with these solar concentration systems because of the irradiance levels available where the metallurgical plants are located. The incorporation of a CTP in the world largest copper metallurgical facility to substitute the current fossil fuel energy supply could demand a capacity of 68 MWt. This last consideration obeys to the weighted average of the specific energy consumption gave by the Chilean Copper Commission COCHILCO. However, the results of this work indicate that the behavior of this change in the operative parameters could reduce the 68 MWt almost in a half.
关键词： solar central tower systems,copper production,renewable energy,pyrometallurgical route,thermal applications
更新于2025-09-04 15:30:14
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AIP Conference Proceedings [Author(s) 3RD INTERNATIONAL CONFERENCE ON MATERIALS SCIENCE, RESOURCE AND ENVIRONMENTAL ENGINEERING (MSREE 2018) - Changsha City, China (26–28 October 2018)] - Review of concentrating solar thermal power in China: Status quo, problems and countermeasures
摘要： Currently, the concentrating solar thermal power (CSP) has been confronted with great opportunity for further development. As a strategic emerging industry in China, the CSP meets the appeals of the Belt and Road strategy from manufacturing to practical applications. Therefore, to development the CSP in depth is of vital significance to promote power supply structure transformation, energy saving and emission reduction, as well as energy security in China. However, the development of China’s CSP industry at present is still at the initial stage, with a few problems seriously hindering the large-scale and sustainable development of the industry. In view of this, this paper systematically analyzes China’s CSP industry. Firstly, it conducts a detailed research on the industry status quo. On that basis, it deeply studies the existing issues and future development trend. Finally, it puts forward a series of feasible countermeasures, laying a solid foundation for the development of the CSP industry and the transformation of energy structure in China.
关键词： Concentrating Solar Thermal Power (CSP),China,Power Supply Structure Transformation,Renewable Energy
更新于2025-09-04 15:30:14
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[IEEE 2018 7th International Conference on Renewable Energy Research and Applications (ICRERA) - Paris, France (2018.10.14-2018.10.17)] 2018 7th International Conference on Renewable Energy Research and Applications (ICRERA) - Comparative Study between CSP and CPV as Two Energy Systems
摘要： The need to cancel the total dependence of fossil fuels, several researches are established in order to meet this goal, mostly on solar systems. Today, global warming and green energy are important topics of discussion for every intellectual gathering all over the world. The only sustainable solution to these problems is the use of solar energy. The aim of this paper is the dynamic study of a PV system under the solar concentration based on lens multi-junction semiconductor materials and Fresnel associated with a passive heat recovery system, and a CSP technology based on Linear Fresnel Reflectors (LFR) with direct steam generation (DSG) in order to apply them in the region of Adrar where DNI is very important; the system LFR with DSG is dedicated to perform with high temperatures which is produce more power, but high temperatures causes a decrease in CPV system performance; the thermo – electric models and SAM software are used in order to describe and predict their behavior and compare their costs of construction.
关键词： Solar,CSP,PV,renewable energy
更新于2025-09-04 15:30:14
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Nanostructured Anodic Oxides: Fabrication & Applications
摘要： The special issue of Current Nanoscience entitled “Nanostructured Anodic Oxides: Fabrication & Applications” comprises review papers focused on various aspects of these nanostructures. Nanostructured anodic oxides are awaking high hopes in the research community due to the solutions of emerging problems they offer. Classically, the anodic oxides on aluminum and its alloys are a protective coating, providing improved corrosion resistance [1-5], adhesion of primer to metallic substrate [6] and hardness of the anodized surface [7-10]. However, since two-step self-organized anodization was invented in 1995, allowing to form highly-ordered honey-comb ordering of the nanopores (Fig. 1a), numerous researches have been triggered. On one hand, still new electrolytes, operating conditions and electrolyte additives are being researched, providing new ranges of the applied voltages and consequently new ranges of oxides pore diameter and interpore distance [11-17]. On the other hand, research on anodic aluminum oxide is so mature, that already significant achievements in nanofabrication [18-22] (Figs. 1b-1c), surfaces with tunable wetting angle [23-27], cells culturing platforms [28, 29], biomaterials performance [29], sensing [30, 31], structural color generation [31, 32], photocatalysis [33], renewable energy harvesting [34-36], photonic crystals [37] and plasmonic materials [38] have been reported. Moreover, also other metals are being researched. Numerous achievements in anodization of Ti [39-45] W [46], Zr [47, 48], Cu [49-51], Fe [52], Sn [53], Zn [54] and stainless steel [55] allowed to make progress in renewable energy harvesting [43, 44, 51] (especially in the assembly of dye-sensitized solar cells [44] and photoelectrochemical water splitting [43, 51]), CO2 reduction to hydrocarbons [45], drug delivery systems [41], improvement in biomaterials performance [40] and photocatalysis [46]. Moreover, also intermetallic alloys, like FeAl [56, 57] and bimetallic, layered systems like Al-Ti [58] were anodized in order to form nanoporous oxides with tunable band gap and to ease the nanofabrication, respectively.
关键词： Nanostructured Anodic Oxides,Biomaterials,Anodization,Renewable Energy Harvesting,Photocatalysis,Sensing,Fabrication,Applications,Nanofabrication
更新于2025-09-04 15:30:14
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Using IoT and smart monitoring devices to optimize the efficiency of large-scale distributed solar farms
摘要： This paper presents a novel IoT-based architecture that utilizes IoT hardware, software, and communication technologies to enable real-time monitoring and management of solar photovoltaic systems at large scales. The system enables stakeholders to remotely control and monitor the photovoltaic systems and evaluate the effect of various environmental factors such as weather, air quality, and soiling. The system was implemented and evaluated in terms of network delay and resource consumption. Message Queueing Telemetry Transport (MQTT) was used to facilitate wide-scale real-time communication. The average network delay was found to be less than 1 s, proving the architecture to be ideal for solar and smart grid monitoring systems. As for resource consumption, the evaluation showed the hardware to consume about 3% of the panel’s output, while the application also utilized a very small percentage of the CPU. This led to the conclusion that the proposed architecture is best deployed using low-cost constrained edge devices where a combination of IoT-based paradigm, efficient MQTT communication, and low resources consumption makes the system cost-effective and scalable.
关键词： Solar photovoltaic monitoring,Smart renewable energy,IoT,Smart grid
更新于2025-09-04 15:30:14
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[IEEE 2018 IEEE ANDESCON - Santiago de Cali, Colombia (2018.8.22-2018.8.24)] 2018 IEEE ANDESCON - Solar Energy Supply for the Rural Parish GAD's of Ecuador
摘要： In the present article a design of a photovoltaic solar system will be made for the electric power supply in the 790 GAD's Parish facilities of Ecuador, the designed system will start working when the connection to the public network or by unforeseen cuts of electric power, a situation that is very recurrent in rural areas of Ecuador and through this system the continuity of the service to the inhabitants of the corresponding jurisdiction is guaranteed. It is a very interesting purpose since the National Government should promote this type of initiatives in a medium term, due to the change of the productive matrix in correspondence with the National Plan a Lifetime and the Constitution of the Republic of Ecuador of 2009 where the State considers electric power services as a basic service.
关键词： Parish GAD,simulation,renewable energy,productive matrix,COOTAD,rural electrification,good living
更新于2025-09-04 15:30:14
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[IEEE 2018 International Conference and Exposition on Electrical And Power Engineering (EPE) - Iasi, Romania (2018.10.18-2018.10.19)] 2018 International Conference and Exposition on Electrical And Power Engineering (EPE) - Establishing an Optimal Residential RES PV Source by Modelling
摘要： The analyzed Microgrid (MG) is implemented in the Research Centre of Transilvania University of Brasov Institute and consists in an 8 kW photovoltaic (PV) system, a grid connecting PV inverter of 4.6 kW and a 48V Li-ion stationary battery interfaced with the MG by a 6 kW inverter which provides around 20 kWh storage capacity. The main issue of this paper is to establishing by modeling, an optimal residential PV renewable energy source (RES), that provide for a given inverter the best energy production based on the solar potential from Brasov area. Simulations are accomplished in Homer Pro software in order to estimate the optimal PV power source to obtain a maximum amount of energy for a given PV system structure.
关键词： modelling,microgrid,PV source,renewable energy sources
更新于2025-09-04 15:30:14
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[IEEE 2018 2nd International Symposium on Multidisciplinary Studies and Innovative Technologies (ISMSIT) - Ankara, Turkey (2018.10.19-2018.10.21)] 2018 2nd International Symposium on Multidisciplinary Studies and Innovative Technologies (ISMSIT) - Optimal Design of a Rooftop Wind-PV Hybrid System to Meet Energy Demand for a Typical Residential Home in 20-Year Lifetime Projection
摘要： The need for electrical power gradually increases every year due to population growth and economic development in particular in developing countries. The primary sources of electricity are usually fossil fuels such as coal, natural gas, oil etc. and major part of them is imported by those countries. This is unfortunately a typical indication of the energy dependence and play strategic role in economic development of the developing countries since some cannot switch to renewable energy use despite they have abundant renewable energy potential. The fact that the use of renewable energy is not widespread in those countries and it can be seen as not making enough investment by the government or private sector. This potential can be utilized by using on-grid/off-grid renewable systems in particular wind-PV systems ranging from power ratings of 1 to 10 kW in remote areas. To make such systems economic, power balance between generation and consumption should be maintained at hourly time slots in the day. One way to do that is to solve a discrete optimization problem and the solution can be achieved by a mathematical model satisfying the given constraints in a certain location. Unit sizing of a low power off-grid renewable system to meet power demand for a typical residential home in a location is achieved and the outcomes are meaningful and encouraging for widening renewable energy applications worldwide.
关键词： electric generation,metaheuristic techniques,optimal design,rooftop wind-PV hybrid system,renewable energy
更新于2025-09-04 15:30:14
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Integrating Grey Data Preprocessor and Deep Belief Network for Day-ahead PV Power Output Forecast
摘要： Generation output forecasting is a crucial task for planning and sizing of a photovoltaic (PV) power plant. The purpose of this paper is to present an effective model for day-ahead forecasting PV power output of a plant based on deep belief network (DBN) combined with grey theory-based data preprocessor (GT-DBN), where the DBN attempts to learn high-level abstractions in historical PV output data by utilizing hierarchical architectures. Test results obtained by the proposed model are compared with those obtained by other five forecasting methods including autoregressive integrated moving average model (ARIMA), back propagation neural network (BPNN), radial basis function neural network (RBFNN), support vector regression (SVR), and DBN alone. It shows that the proposed model is superior to other models in forecasting accuracy and is suitable for day-ahead PV power output prediction.
关键词： supervised learning,time series analysis,power generation planning,neural networks,Renewable energy
更新于2025-09-04 15:30:14
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Risk analysis using meteorological weather factors in solar energy conversion systems
摘要： We propose a methodology for conducting simulations of operational scenarios for energy projects based on photovoltaic generation systems. It considers several documented facts about time series of weather, such as strong seasonality and structural breaks, which the previous literature has not explored in depth. Our proposal uses public weather time series, which are usually recorded by meteorological observatories. This makes our approach a suitable strategy for any firm interested in applying it to its own data and projects. This approach also allows the user to set an appropriate level of confidence for the scenarios depending on her interests.
关键词： renewable energy sources,photovoltaic systems,risk measurement,structural breakpoints,horizontal solar radiation
更新于2025-09-04 15:30:14