Bibliografie tematiche / Solar simulation and experimentation

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Letteratura scientifica selezionata sul tema "Solar simulation and experimentation"

Autore: Grafiati

Pubblicato: 11 gennaio 2025

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Articoli di riviste sul tema "Solar simulation and experimentation"

Ghabuzyan, Levon, Kevin Pan, Arianna Fatahi, Jim Kuo e Christopher Baldus-Jeursen. "Thermal Effects on Photovoltaic Array Performance: Experimentation, Modeling, and Simulation". Applied Sciences 11, n. 4 (5 febbraio 2021): 1460. http://dx.doi.org/10.3390/app11041460.

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The performance of photovoltaic (PV) arrays are affected by the operating temperature, which is influenced by thermal losses to the ambient environment. The factors affecting thermal losses include wind speed, wind direction, and ambient temperature. The purpose of this work is to analyze how the aforementioned factors affect array efficiency, temperature, and heat transfer coefficient/thermal loss factor. Data on ambient and array temperatures, wind speed and direction, solar irradiance, and electrical output were collected from a PV array mounted on a CanmetENERGY facility in Varennes, Canada, and analyzed. The results were compared with computational fluid dynamics (CFD) simulations and existing results from PVsyst. The findings can be summarized into three points. First, ambient temperature and wind speed are important factors in determining PV performance, while wind direction seems to play a minor role. Second, CFD simulations found that temperature variation on the PV array surface is greater at lower wind speeds, and decreases at higher wind speeds. Lastly, an empirical correlation of heat transfer coefficient/thermal loss factor has been developed.

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Kareem, M. W., Khairul Habib e S. I. Gilani. "Lumped Components Modeling of Double Pass Solar Collector with Porous Matrixes". Applied Mechanics and Materials 465-466 (dicembre 2013): 216–20. http://dx.doi.org/10.4028/www.scientific.net/amm.465-466.216.

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In this report, the modeling and simulation of a double pass solar air absorber was carried out using combination of Simscape and Simulink modeling tools. The solar system air mass flow rate and the porous media were critically investigated by using local weather data of Seri Iskandar, Perak, Malaysia. Optimal inlet air flow rate of 0.034kgm-2s-1 was obtained and one of the packed beds, sandstone extended the thermal transfer period of solar collector system by 1150s which displayed good agreement with the reported model and experimental outcomes. The results obtained have shown that it is a promising alternative tool for solar thermal experimentation modeling.

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Suresh Babu, G., B. Prem Charan e T. Murali Krishna. "Performance Analysis of SPV Module Using Solar PVTR System". International Journal of Engineering & Technology 7, n. 3.3 (21 giugno 2018): 68. http://dx.doi.org/10.14419/ijet.v7i3.3.14488.

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With a spurt in the use of non-conventional energy sources, photovoltaic installations are being deployed in several applications such as distributed power generation and standalone systems. Solar Photo Voltaic (SPV) module is the basic component of the solar PV system. The functioning of a photovoltaic array is influenced by solar insolation, shading and array arrangement. Often the PV arrays get shadowed, completely or partially by neighboring buildings, trees, towers and service poles. The efficacy of PV array unvaryingly depends upon temperature which in turn is reliant on radiation. In order to validate this hypothesis, there are certain instruments and experimentation methods available which are expensive. But carrying out hardware testing on the solar PV system with Photo Voltaic Training and Research (PVTR) system and simulating using software will lead to least economical method of achieving performance analysis which is the main objective of this paper. The efficiency of PV module is analyzed from I-V and P-V characteristics for this standalone solar pv system by changing radiation and temperature parameters. This paper mainly emphases on comparison of the testing results and simulation results for different radiation levels.

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T R, Mohan Kumar, P. V. Srihari e M. S. Krupashankara. "Simulation and Optimization of Coating thickness for Absorptance and Reflectance in Multilayered Thin Films". International Journal of ChemTech Research 13, n. 4 (2020): 364–73. http://dx.doi.org/10.20902/ijctr.2019.130405.

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Solar selective materials and structure of solar thermal energy conversion systems plays a prominent role for the improvement of optical properties. In the present work simulations on multi-layered thin films have been conducted using code software with Mo and Was functional layer in combination with bond layer and protective layers of Si3N4 and Al2O3. The better combination is selected for optimization on thickness for absorption and reflection. To simplify experimentation, Taguchi‟s design of experiments approach was adopted to determine the optimum material layer combination.The results indicate for multi-layered thin films that combination of Al2O3-Mo-Al2O3 has better reflectance of 50.48% and combination Si3N4-W-Si3N4 has better absorptance of 74.81% upon optimization on thickness of bond layers, functional and protective layers. These results are discussed on main effect plots, contour plots and surface plots.

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Chenchireddy, Kalagotla, Khammampati R. Sreejyothi, Podishetti Ganesh, Gatla Uday Kiran, Chilukuri Shiva e Banoth Nithish Kumar. "Fundamental frequency switching strategies of a seven level hybrid cascaded H-bridge multilevel inverter". International Journal of Applied Power Engineering (IJAPE) 13, n. 2 (1 giugno 2024): 263. http://dx.doi.org/10.11591/ijape.v13.i2.pp263-268.

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This paper presents a novel hybrid cascaded H-bridge multilevel inverter (HCHB MLI) designed to address the growing importance of multilevel inverters in the context of renewable energy sources such as solar, wind, and fuel cells. The proposed topology features eight insulated-gate bipolar transistor (IGBT) switches and utilizes two distinct input direct current (DC) sources: a battery and a capacitor, making it a hybrid system. The control strategy employed in this topology is based on fundamental switching frequency techniques. Simulation results of the proposed topology are conducted using MATLAB/Simulink software, while hardware experimentation with a single-phase H-bridge inverter is also demonstrated in the paper. For pulse generation and IGBT switch control, an Arduino UNO microcontroller is utilized. The output voltage of the single-phase H-bridge inverter is verified through experimentation using a cathode-ray oscilloscope (CRO).

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Ordaz Castillo, Job, Hector D. Garcia-Lara, Nilda Gabriela Trejo-Luna e Santos Mendez-Diaz. "An open-loop control algorithm for improved tracking in a heliostat". Renewable energy, biomass & sustainability 6, n. 1 (11 aprile 2024): 50–56. http://dx.doi.org/10.56845/rebs.v6i1.90.

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The growing energy demand and its relation to climate change have driven the search for sustainable alternatives, such as concentrated solar energy. In this context, heliostats play a crucial role by reflecting and concentrating solar light onto a receiver. However, traditional control approaches based on geographical data have limitations. This study introduces an autonomous control system for heliostats that eliminates the need for preloaded geographical data. The approach is based on communication between the heliostat and the solar tracker, with two configuration modes: map calibration and automatic. Centralized and autonomous heliostats are distinguished, with the latter being the focus of the study. Autonomous heliostats have their own control system and can make decisions regarding positioning and safety. The methodology involves a mathematical algorithm that calculates the optimal rotation and tilt of the heliostat to redirect light toward a target. Simulation and physical prototype testing validate a remarkable consistency between simulated and experimental data. A key result is the surprising similarity of 97.9% between the obtained data, validating the algorithm's effectiveness. This study provides a robust approach for designing autonomous heliostat control systems, integrating simulation and experimentation. These results support the algorithm's precision and ability to direct solar radiation effectively. Expanding towards autonomous control and complete heliostat system evaluation facilitates the path toward more efficient and sustainable concentrated solar energy.

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Harmim, A., M. Boukar, M. Amar e Aek Haida. "Simulation and experimentation of an integrated collector storage solar water heater designed for integration into building facade". Energy 166 (gennaio 2019): 59–71. http://dx.doi.org/10.1016/j.energy.2018.10.069.

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Ouédraogo, Salifou, Thierry S. M. Ky, Amadou Konfé, Sié Kam e D. Joseph Bathiébo. "Expérimentation et analyse thermique d’un concentrateur hémisphérique stationnaire sous les conditions climatiques à Ouagadougou, Burkina Faso". Journal de Physique de la SOAPHYS 2, n. 1b (5 marzo 2021): C20A04–1—C20A04–1. http://dx.doi.org/10.46411/jpsoaphys.2020.01.04.

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This technology is used in drying, domestic water heating or in the production of electricity. However, it uses a solar tracking system that is too complex and expensive for countries with less equipment and high solar potential. In this study, we are interested in the experimentation and thermal analysis of a stationary hemispheric concentrator. The numerical resolution of the caustic equations of a spherical concentrator allowed to determine the dimensions and the position of the receiver, necessary for the design of the physical model and the assembly of the experimental device. The results of the 3D numerical simulation with the Comsol5.3a software allowed to highlight the ray tracing and the profile of the flow concentrated on the receiver. The results obtained experimentally show that the receiver and the air inside reached a maximum temperature of 224°C and 97.6°C respectively. The solar concentration device studied is therefore technically favorable for thermal applications requiring intermediate temperatures.

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Reveles-Miranda, María, Diego Sánchez-Flórez, José Cruz-Chan, Eduardo Ordoñez-López, Manuel Flota-Bañuelos e Daniella Pacheco-Catalán. "The Control Scheme of the Multifunction Inverter for Power Factor Improvement". Energies 11, n. 7 (26 giugno 2018): 1662. http://dx.doi.org/10.3390/en11071662.

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Grid-connected photovoltaic (PV) systems require an inverter that allows an efficient integration between the panels and the grid; however, the operation of conventional inverters is limited to the periods of power generation by the panels. This paper proposes a control scheme based on the theory of passivity to provide additional functions to the inverter of a PV system. These additional functions improve the power quality; for example, when loads demand inductive currents be connected, the power factor is improved independently of the intermittency of the solar energy source. The performance of the system with the passivity-based control is verified by simulation and experimentation using MATLAB/Simulink® (2017a, MathWorks, Natick, MA, USA).

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Gokhale, Hrishikesh, e Lochan Chaudhari. "Eco-Friendly and Renewable Power Generation from Heat Using Thermophotovoltaic Technology". ECS Transactions 107, n. 1 (24 aprile 2022): 14641–54. http://dx.doi.org/10.1149/10701.14641ecst.

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Renewable energy sources are the need of the hour, considering climate change’s impact on our planet. Many sources are currently being researched, none of them are commercially stable enough to compete with the existing non-renewable energy sources, with the main reason being performance for the price. We aim to develop a practical system based on the current research progress in infrared-based thermophotovoltaic power generation and storage. Similar systems already exist for harnessing solar energy, but we plan to overcome the inability of solar energy to produce electricity in the absence of sunlight by developing an infrared-based system. Another challenge is the unavailability of enough thermal radiation in the vicinity to support the system from different sources. The main objectives of this work are to identify the advantages and disadvantages of such a system, its feasibility, and its efficiency for working in the real world through theoretical predictions, simulation, and experimentation.

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Tesi sul tema "Solar simulation and experimentation"

Fasquelle, Thomas. "Modélisation et caractérisation expérimentale d’une boucle solaire cylindro-parabolique intégrant un stockage de type thermocline". Thesis, Perpignan, 2017. http://www.theses.fr/2017PERP0040/document.

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Comme les autres technologies liées aux énergies renouvelables, le solaire à concentration souffre des problèmes liés à l’intermittence de la ressource. La technologie thermocline est une solution prometteuse qui réduirait le coût du stockage thermique dans les centrales solaires de ce type. Cependant, aucune étude n’a jusqu’ici porté sur l’impact de la variation de la température en sortie du réservoir de stockage de type thermocline sur les autres composants de la centrale. Ce travail de thèse a pour but d’améliorer les connaissances sur ce sujet, grâce à l’utilisation d’une mini boucle solaire cylindro parabolique intégrant un stockage thermocline.En premier lieu, la compatibilité entre le fluide de transfert de la centrale (huile synthétique) et les potentiels matériaux de garnissage de la cuve de stockage (Cofalit, briques de cendres volantes, alumine) est vérifiée. Puis les performances de chacun des composants de la centrale (cuve de stockage, collecteurs solaires, générateur de vapeur) sont analysées expérimentalement et numériquement. Enfin, le comportement du système global est étudié, avec un accent porté sur l’impact de la variation de la température de sortie de la cuve thermocline sur les autres composants.Il a été montré qu’avec un dimensionnement et une stratégie de contrôle appropriés, la technologie thermocline diminue très peu les performances de la centrale solaire par rapport à la technologie conventionnelle à deux cuves (maximum 3 4 % de diminution de la production électrique)
Like other renewable energy technologies, concentrated solar power (CSP) suffers from resource intermittence. Thermocline technology is a promising solution to decrease cost of thermal energy storage in CSP plants. Thermocline behavior has thoroughly been studied in the past years and its behavior is considered well known. However no study treated of thermocline tanks integrated in CSP plants. Thus, the impact of the varying outlet temperature of the thermocline storage has not been assessed yet. This work aims to fill this lack of knowledge by studying a mini parabolic trough power plant integrating a thermocline tank as storage.First, the compatibility between the heat transfer fluid of the plant (synthetic oil) and various potential filler materials (Cofalit, coal fly ash bricks, alumina) of the storage tank is verified. Then, some performance studies are performed on the three main components of the power plant (energy storage tank, solar collectors, steam generator). Finally, the behavior of the whole system is assessed, with a focus on the impact of the varying fluid temperature at the outlet of the thermocline tank on the other components.It has been shown that, with a proper sizing and an appropriate control strategy, thermocline technology induces very low decrease of the solar power plant performance in comparison to the conventional two tank technology (maximum 3-4% of electrical power production difference)

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Koninck, Corentin. "Procédés solaires basse température pour la désinfection d'eau de surface". Electronic Thesis or Diss., Perpignan, 2024. https://theses.hal.science/tel-04867589.

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Les difficultés d'accès à l'eau potable, affectent le quotidien de 2 milliards de personnes et constituent une problématique majeure à résoudre. Le sixième objectif de développement durable, mis en place par les Nations Unies, a pour but de promouvoir l'accès universel à l'eau potable en développant les possibilités d'assainissement et de potabilisation de l'eau dans les milieux urbains mais également au niveau des sites isolés. Ces derniers sont caractérisés par l'absence de réseaux énergétiques, la rareté de personnels techniques qualifiés et la difficulté d'acheminer des matières premières. Le développement de procédés décentralisés, durables, autonomes énergétiquement, répond au besoin de traitement de l'eau contre la pollution microbiologique, cause de nombreux décès à travers le monde. Deux procédés, avec le solaire thermique basse température comme source d'énergie, et basés respectivement sur le principe de la pasteurisation et de l'ultrafiltration membranaire de l'eau, sont conçus, expérimentés et modélisés. L'objectif est de démontrer la possibilité d'assurer la désinfection d'eau de surface à l'échelle des petites communautés décentralisées à partir d'une énergie délivrée par des collecteurs thermiques plans standards. Le procédé solaire de pasteurisation développé, permet de traiter, en fonction des conditions d'irradiation, des volumes journaliers compris entre 800 et 1000 L par unité de capteur (2 m2 de surface). La consommation d'énergie solaire spécifique, optimisée grâce à l'utilisation d'un échangeur de chaleur performant positionné sur la boucle ouverte de traitement, varie entre 12 et 15 kWhsol.m-3. Il fonctionne de manière totalement autonome au fil du soleil avec un système de régulation passif. Le procédé d'ultrafiltration repose sur deux innovations : (i) la production de l'énergie mécanique nécessaire au fonctionnement du système membranaire par un cycle thermodynamique de type organique Rankine dont l'entrée de chaleur est fournie par un collecteur solaire ; (ii) l'utilisation de l'énergie mécanique pour le pompage et la pressurisation de l'eau par actionnement d'un vérin double effet. La faisabilité technique du procédé est vérifiée avec une consommation énergétique spécifique fluctuant entre 5 et 10 kWhsol.m-3. Dans les deux cas, une modélisation est réalisée et validée à partir des résultats expérimentaux. Le couplage des deux technologies, permet d'envisager, d'une part la génération du perméat constituant une eau propre à la consommation, et d'autre part de la désinfection du concentrât qui est traitée par la suite par le procédé de pasteurisation. Ce système de désinfection associe performance énergétique et zéro rejet
Difficulties in accessing drinking water affect the daily lives of 2 billion people, and represent a major problem to be solved. The 6th Sustainable Development Goal, set by the United Nations, aims to promote universal access to drinking water by developing sanitation and potabilization facilities in urban areas, and in isolated sites. The latter are characterized by the absence of energy networks, the scarcity of qualified technical personnel and the difficulty of transporting raw materials. The development of decentralized, sustainable, energy-independent processes meets the need to treat water against microbiological pollution, the cause of many deaths worldwide. Two processes, using low-temperature solar thermal energy as an energy source, and based respectively on the principle of water pasteurization and membrane ultrafiltration, are being designed, tested and modelled. The aim of this project is to demonstrate the feasibility of disinfecting surface water on the scale of small decentralized communities, using energy supplied by standard flat-plate thermal collectors. Depending on irradiation conditions, the solar pasteurization process developed can treat daily volumes of between 800 and 1000 L per collector unit (2 m2 surface area). Specific solar energy consumption, optimized through the use of a high-performance heat exchanger positioned on the open treatment loop, varies between 12 and 15 kWhsol.m-3. It operates completely autonomously with the sun, using a passive control system. The ultrafiltration process is based on two innovations: (i) the production of the mechanical energy required to operate the membrane system by an organic Rankine thermodynamic cycle whose heat input is supplied by a solar collector; (ii) the use of mechanical energy to pump and pressurize the water by actuating a double-acting cylinder. The technical feasibility of the process has been verified, with specific energy consumption fluctuating between 5 and 10 kWhsol.m-3. In both cases, modelling is carried out and validated on the basis of experimental results. By coupling the two technologies, it is possible to generate the permeate required for drinking water, and to disinfect the concentrate using the pasteurization process. This disinfection system combines energy efficiency with zero waste

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Yang, Clara Chih-Chieh. "Web dynamics : modeling, simulation, and experimentation". Thesis, Massachusetts Institute of Technology, 1996. http://hdl.handle.net/1721.1/38153.

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Cukalovic, Boris. "MIT integrated microelectronics device experimentation and simulation iLab". Thesis, Massachusetts Institute of Technology, 2006. http://hdl.handle.net/1721.1/36776.

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Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2006.
Includes bibliographical references (p. 57-58).
We developed the MIT Integrated Microelectronics Device Experimentation and Simulation iLab, a new online laboratory that combines and significantly upgrades the capabilities of two existing online microelectronics labs: WebLab, a device characterization lab, and WebLabSim, a device simulation lab. The new integrated tool allows users to simultaneously run experiments on actual devices and simulations on the virtual ones, as well as to compare the results of the two. In order to achieve this, we considerably extended the capabilities of the original clients. We added the ability to graph the results of multiple experiments and simulations simultaneously, on top of each other, which allows for much easier comparison. We also added the ability to load, view and graph the results of experiments and simulations that were ran at any point in the past, even when the corresponding lab configurations are no longer available. Our hope is that this new integrated iLab will enrich microelectronics teaching and learning by allowing students to compare real life device behavior with theoretical expectations.
by Boris Cukalovic.
M.Eng.

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Z'Graggen, Andreas. "Solar gasification of carbonaceous materials : reactor design, modeling and experimentation /". kostenfrei, 2008. http://e-collection.ethbib.ethz.ch/view/eth:30596.

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Jin, Qiang. "SimGest: A simulation experimentation environment and a program generator for interactive simulation". Thesis, University of Ottawa (Canada), 1994. http://hdl.handle.net/10393/6844.

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A good methodology for simulation experimentation can result in high efficiency in carrying out simulation experiments. To fully support a user to carry out a simulation experiment, a supportive and user friendly simulation experimentation environment is desirable. The program generator which generates the executable programs from a model expressed in a high-level simulation programming language is another important issue in simulation experimentation. This thesis presents a new methodology for simulation experimentation based on the model specification language Gest. A simulation experimentation environment which supports a user to carry out the simulation experiment based on the model written in Gest is implemented. A program generator which analyzes the model and generates an executable simulation program with simulation tables for the simulation experimentation environment is also discussed.

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Leidig, Jonathan Paul. "Epidemiology Experimentation and Simulation Management through Scientific Digital Libraries". Diss., Virginia Tech, 2012. http://hdl.handle.net/10919/28759.

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Advances in scientific data management, discovery, dissemination, and sharing are changing the manner in which scientific studies are being conducted and repurposed. Data-intensive scientific practices increasingly require data management related services not available in existing digital libraries. Complicating the issue are the diversity of functional requirements and content in scientific domains as well as scientists' lack of expertise in information and library sciences. Researchers that utilize simulation and experimentation systems need digital libraries to maintain datasets, input configurations, results, analyses, and related documents. A digital library may be integrated with simulation infrastructures to provide automated support for research components, e.g., simulation interfaces to models, data warehouses, simulation applications, computational resources, and storage systems. Managing and provisioning simulation content allows streamlined experimentation, collaboration, discovery, and content reuse within a simulation community. Formal definitions of this class of digital libraries provide a foundation for producing a software toolkit and the semi-automated generation of digital library instances. We present a generic, component-based SIMulation-supporting Digital Library (SimDL) framework. The framework is formally described and provides a deployable set of domain-free services, schema-based domain knowledge representations, and extensible lower and higher level service abstractions. Services in SimDL are specialized for semi-structured simulation content and large-scale data producing infrastructures, as exemplified in data storage, indexing, and retrieval service implementations. Contributions to the scientific community include previously unavailable simulation-specific services, e.g., incentivizing public contributions, semi-automated content curating, and memoizing simulation-generated data products. The practicality of SimDL is demonstrated through several case studies in computational epidemiology and network science as well as performance evaluations.
Ph. D.

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Wagner, Albert W. "Electrochemical facilitated transport: a study in synthesis, simulation and experimentation". Diss., Virginia Tech, 1995. http://hdl.handle.net/10919/39106.

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Schunk, Lothar Oliver. "Solar thermal dissociation of zinc oxide : reaction kinetics, reactor design, experimentation, and modeling /". Zürich : ETH, 2008. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=18041.

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Xu, Yijia. "A SIMULATION PLATFORM FOR EXPERIMENTATION AND EVALUATION OF DISTRIBUTED-COMPUTING SYSTEMS". Diss., Tucson, Arizona : University of Arizona, 2005. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu%5Fetd%5F1229%5F1%5Fm.pdf&type=application/pdf.

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Libri sul tema "Solar simulation and experimentation"

Mabie, Kevin T. Solar simulation laboratory description and manual. Monterey, Calif: Naval Postgraduate School, 1985.

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B, Moldwin M., Akasofu Syun-Ichi e United States. National Aeronautics and Space Administration., a cura di. Simulation of January 1-7, 1978 events. [Washington, DC: National Aeronautics and Space Administration, 1987.

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Perers, Bengt. Simulation and evaluation methods for solar energy systems. Stockholm, Sweden: Swedish Council for Building Research, 1990.

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Yamaguchi, Masafumi, e Laurentiu Fara. Advanced solar cell materials, technology, modeling, and simulation. Hershey PA: Engineering Science Reference, 2012.

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Dutré, W. L. A European transient simulation model for thermal solar systems, EMGP2. Dordrecht, Holland: D. Reidel Pub. Co. for the Commission of the European Communities, 1985.

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Babin, Thomas S. Designing a new factory with manufacturing simulation and planned experimentation. Reading, Mass: Addison-Wesley, 1993.

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Dutré, W. L. Simulation of water based thermal solar systems: EURSOL, an interactive program. Dordrecht: Kluwer Academic Publishers, 1991.

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Engler, Kevin P. Animal-related computer simulation programs for use in education and research. Beltsville, Md: National Agricultural Library, 1989.

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Thornton, Mark Edward. Object-orientated simulation of passive solar energy use in buildings. Birmingham: University of Birmingham, 1997.

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Berube, R. H. Learning electronics communications through experimentation using Electronics workbench multisim. Upper Saddle River, N.J: Prentice Hall, 2002.

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Capitoli di libri sul tema "Solar simulation and experimentation"

Greasley, Andrew. "Experimentation". In Simulation Modelling, 241–57. London: Routledge, 2022. http://dx.doi.org/10.4324/9781003124092-18.

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Greasley, Andrew. "Experimentation". In Simulation Modelling, 281–97. London: Routledge, 2022. http://dx.doi.org/10.4324/9781003124092-22.

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Filzmoser, Michael. "Experimentation". In Simulation of Automated Negotiation, 115–31. Vienna: Springer Vienna, 2010. http://dx.doi.org/10.1007/978-3-7091-0133-9_5.

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Robinson, Stewart. "Experimentation: Obtaining Accurate Results". In Simulation, 166–99. London: Macmillan Education UK, 2014. http://dx.doi.org/10.1007/978-1-137-32803-8_9.

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Ören, Tuncer, Paul K. Davis, Rhys Goldstein, Azam Khan, Laurent Capocchi, Maâmar El-Amine Hamri, Navonil Mustafee et al. "Simulation as Experimentation". In Simulation Foundations, Methods and Applications, 77–119. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-11085-6_3.

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Robinson, Stewart. "Experimentation: Searching the Solution Space". In Simulation, 200–240. London: Macmillan Education UK, 2014. http://dx.doi.org/10.1007/978-1-137-32803-8_10.

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Birta, Louis G., e Gilbert Arbez. "Experimentation and Output Analysis". In Modelling and Simulation, 241–66. London: Springer London, 2013. http://dx.doi.org/10.1007/978-1-4471-2783-3_7.

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Birta, Louis G., e Gilbert Arbez. "Experimentation and Output Analysis". In Modelling and Simulation, 235–79. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-18869-6_7.

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Ewald, Roland. "Experimentation Methodology". In Automatic Algorithm Selection for Complex Simulation Problems, 203–46. Wiesbaden: Vieweg+Teubner Verlag, 2012. http://dx.doi.org/10.1007/978-3-8348-8151-9_7.

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Griffith, Daniel A. "Simulation Experimentation in Spatial Analysis". In Advanced Studies in Theoretical and Applied Econometrics, 225–60. Dordrecht: Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-2758-2_9.

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Atti di convegni sul tema "Solar simulation and experimentation"

Adhau, S. P., R. M. Moharil, V. S. Rajguru e Mrunmayee Gujar Pradhan. "Study and Analysis of Solar Photo Voltaic Modules with Real Time Experimentation on Solar Simulator/Solar Emulator". In 2022 International Conference on Electrical, Computer and Energy Technologies (ICECET). IEEE, 2022. http://dx.doi.org/10.1109/icecet55527.2022.9872753.

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Frederickson, Lee, Mario Leoni e Fletcher Miller. "Carbon Particle Generation and Lab-Scale Small Particle Heat Exchange Receiver Experimentation and Modeling". In ASME 2014 8th International Conference on Energy Sustainability collocated with the ASME 2014 12th International Conference on Fuel Cell Science, Engineering and Technology. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/es2014-6640.

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Central receivers being installed in recent commercial CSP plants are liquid-cooled and power a steam turbine in a Rankine cycle. San Diego State University’s (SDSU) Combustion and Solar Energy Laboratory has built and is testing a lab-scale Small Particle Heat Exchange Receiver (SPHER). The SPHER is an air-cooled central receiver that is designed to power a gas turbine in a Brayton cycle. The SPHER uses carbon nanoparticles suspended in air as an absorption medium. The carbon nanoparticles should oxidize by the outlet of the SPHER, which is currently designed to operate at 5 bar absolute with an exit gas temperature above 1000°C. Carbon particles are generated from hydrocarbon pyrolysis in the carbon particle generator (CPG). The particles are mixed at the outlet of the CPG with dilution air and the mixture is sent to the SPHER. As the gas-particle mixture flows through the SPHER, radiation entering the SPHER from the solar simulator is absorbed by the carbon particles, which transfer heat to the gas suspension and eventually oxidize, resulting in a clear gas stream at the outlet. Particle mass loading is measured using a laser opacity measurement combined with a Mie calculation, while particle size distribution is determined by scanning electron microscopy and a diesel particulate scatterometer prior to entering the SPHER. In predicting the performance of the system, computer models have been set up in CHEMKIN-PRO for the CPG and in ANSYS Fluent for the SPHER, which is coupled with VeGaS ray trace code for the solar simulator. Initial experimentation has resulted in temperatures above 850°C with around a 50K temperature difference when particles are present in the air flow. The CPG computer model has been used to estimate performance trends while the SPHER computer model has been run for conditions to match those expected from future experimentation.

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Bharambe, Ganesh, A. M. Patil, Sandip Kale, Kumar Digambar Sapate e Prakash Dabeer. "Simulation of Heat Flux Between Two Parallel Metal Plates With Thermic Fluid as a Media". In ASME 2015 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/imece2015-53449.

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Most of the house hold needs are served by either the electricity or the LPG gas.[1] All fuel supply from fossil fuels seems to be limited and can generate an acute shortage in the coming future. Availability of power will be a vital problem, to be faced by future generations. Harnessing the power from solar rays seems to be the most reliable path towards sustainability of energy. The use of solar energy in the form of photovoltaic has captured a firm base in markets. However thermal energy extraction seems to be a neglected area, which has a huge potential. Hence the present paper deals with the study of extraction of such solar thermal energy using thermic fluids. With this aim, the author has initiated a study to extract the heat from solar concentrated power (CSP) systems. This system will heat the thermic fluid due to thermal energy in solar rays. This hot fluid is then passed through a guided passages formed between two plates and is used for heating top and bottom surfaces of two metallic plates. These hot surfaces then can be used as source of energy for home and industrial purposes. However in the present experimentation work, the scope of work is limited to thermal heat handling through the plate surfaces. Hence the supply of thermal energy from CSP is equivalently replaced by electric heater/ gas burners and is not discussed in details. Different flow passages are considered for result generation. Computational Fluid Dynamics (CFD) using FLUENT as tool in ANSYS 14.5 software is used for studying and comparing the results. Mathematical model is generated using preselected option of passage. Further Experimental validation is sorted in the end to verify the above results with temperature of upto 150°C. Selection of heat transfer fluid is based on sustainable higher operating temeperature. Pressure drop across the oil passage has indicated the inherent energy losses of the system. With the use of flow control valve and hydraulic pump the flow through the passage is regulated. Thus the energy flow can be controlled with respect to the requirement of process being carried out at each of the top and bottom surface respectively.

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Hossei, Hamideh, e Kyoung-hee Kim. "Circuit Connection Reconfiguration Of Partially Shaded BIPV Systems, A Solution For Power Loss Reduction". In 111th ACSA Annual Meeting Proceedings. ACSA Press, 2023. http://dx.doi.org/10.35483/acsa.am.111.7.

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Integrating PV panels as a source of clean energy has been a widely established method to achieve net-zero energy (NZE) buildings. The exterior envelope of high-rise buildings can serve as the best place to integrate PV panels for utilizing solar energy. The taller the building, the higher the potential to utilize solar energy by PV panels. However, shadows casting on the BIPV façade systems are unavoidable as they are often subject to partial shades from panels’ self-shading as well as building walls. Partial shading or ununiform solar radiation on the PV surface causes a dramatic decrease in the current output of the circuit. For that reason, in BIPV facades the default circuit connection of manufactured PV panels does not output maximum power under partial shading conditions. This paper investigates the different circuit connections in the BIPV façade system to achieve higher energy yields while addressing design requirements. To this end, PV panel’s power production in different circuit connection reconfiguration scenarios was explored both by simulation and experimentation in two levels of building integrated photovoltaics (BIPV) components: 1) PV cells, and 2) strings of PV cells. The results of simulations demonstrated that the maximum power generation occurred when the circuit connection between cells within a string is series, and the circuit connection between the strings within a PV panel is parallel. Comparing the results of Ladybug (LB) energy simulations with the proposed Grasshopper (GH) analysis recipe showed that the developed GH definition will increase the BIPVs energy simulation by 90%. To validate the simulation results, experimental tests were conducted. The measured power output indicated that the series-parallel circuit connection increased the energy yields of the BIPV facades 71 times in real-world applications compared to the manufactured series-series PV panels.

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Schunk, L. O., P. Haeberling, S. Wepf, D. Wuillemin, A. Meier e A. Steinfeld. "A Rotary Receiver-Reactor for the Solar Thermal Dissociation of Zinc Oxide". In ASME 2007 Energy Sustainability Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/es2007-36078.

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An improved engineering design of a solar chemical reactor for the thermal dissociation of ZnO at above 2000 K is presented. It features a rotating cavity-receiver lined with ZnO particles that are held by centrifugal force. With this arrangement, ZnO is directly exposed to concentrated solar radiation and serves simultaneously the functions of radiant absorber, chemical reactant, and thermal insulator. The multilayer cavity is made of sintered ZnO tiles placed on top of a porous 80%Al2O3-20%SiO2 insulation and reinforced by a 95%Al2O3-5%Y2O3 ceramic matrix composite, providing mechanical, chemical, and thermal stability and a diffusion barrier for product gases. 3D CFD was employed to determine the optimal flow configuration for an aerodynamic protection of the quartz window against condensable Zn(g). Experimentation was carried out at PSI’s high flux solar simulator with a 10 kW reactor prototype subjected to mean radiative heat fluxes over the aperture exceeding 3000 suns (peak 5880 suns). The reactor was operated in a transient ablation mode with semi-batch feed cycles of ZnO particles, characterized by a rate of heat transfer — predominantly by radiation — to the layer of ZnO particles undergoing endothermic dissociation that proceeded faster than the rate of heat transfer — predominantly by conduction — through the cavity walls.

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Terres, Hilario, Sandra Chavez, Raymundo Lopez, Arturo Lizardi e Araceli Lara. "Evaluation of Heating Process of Apple, Eggplant, Zucchini and Potato by Means of Their Thermal Properties". In ASME 2016 Heat Transfer Summer Conference collocated with the ASME 2016 Fluids Engineering Division Summer Meeting and the ASME 2016 14th International Conference on Nanochannels, Microchannels, and Minichannels. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/ht2016-7140.

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In this work, the heating process for apple, eggplant, zucchini and potato by means of evaluation of their thermal properties and the Biot number determined in experimental form is presented. The heating process is carried out using a solar cooker box-type as heating device. The thermal experimental properties determined are conductivity (k), density (D), specific heat (C), diffusivity (Dif) and the Biot number (Bi) for each product evaluated. In the experimentation, temperatures for center and surface in each product and water were measured in controlled conditions. For those measures, a device Compact Fieldpoint and thermocouples placed in the points studied were used. By using correlations with temperature as function, k, D and C were calculated, while by using equations in transitory state for the products modeled as sphere and cylinder was possible to estimate the Biot number after calculation of the heat transfer coefficient for each case. Results indicate the higher value for k, C and Dif correspond to zucchini (0.65 W/m °C, 4084.5 J/kg °C, 1.5 × 10−7 m2), while higher value for D correspond to potato (1197.5 kg/m3). The lowest values for k and C were obtained for potato (0.59 W/m °C, 3658.3 J/kg °C) while lowest values for D and Dif, correspond to zucchini (998.2 kg/m3) and potato (1.45 × 10−7 m2/s) respectively. The maximum and minimum values for Bi corresponded to potato (21.4) and zucchini (0.41) in respective way. The results obtained are very useful in applications for solar energy devices, where estimates for properties are very important to generate new results, for example, numerical simulations. Also, results could be used to evaluate the cooking power in solar cookers when the study object is oriented in that direction.

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Fong, Tessa. "Erosion Experimentation in Solar Power Systems". In C3E Poster Competition for the US C3E Symposium, online/virtual, December 8-9 2020. US DOE, 2020. http://dx.doi.org/10.2172/1754990.

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Hunter, D'Mark, e Dale Joachim. "DF Experimentation through Parametric Simulation". In 2006 International Conference on Computer Engineering and Systems. IEEE, 2006. http://dx.doi.org/10.1109/icces.2006.320430.

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Kruger, Daniela, Carsten Buschmann e Stefan Fischer. "Solar powered sensor network design and experimentation". In 2009 6th International Symposium on Wireless Communication Systems (ISWCS 2009). IEEE, 2009. http://dx.doi.org/10.1109/iswcs.2009.5285339.

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Cheu, Darrell S., Thomas E. Adams e Shripad T. Revankar. "Derivation of Critical Parameters of Betavoltaics". In 2018 26th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/icone26-81109.

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Betavoltaic cells are nuclear batteries ideal for low-power applications for extended periods of time without maintenance or replacement. Betavoltaics function similarly to photovoltaic (solar) cells where instead of using sunlight, beta particles are used to generate electron-hole pairs within a semiconductor p-n junction to generate current. Even though there have been multiple demonstrations, betavoltaic performance has not been extensively studied. To accurately predict betavoltaic performance, which is important for a device in operation without maintenance for elongated periods, all parameters are required to predict potential fluctuations in cell performance, such as doping densities and resistances for semiconductor variation and absorption coefficients for beta-generated current. However, not all parameters are easily measured, especially when the p-n junction is constantly under irradiation and cannot be separated from the source. Critical parameters were characterized experimentally with the betavoltaic cell by performing capacitance-voltage to determine doping densities and performing current-voltage characterization tests to determine resistances on multiple NanoTritium™ cells, while absorption coefficients were determined from MCNP6 simulations. Experiments indicated that series resistance Rs was 1 × 106 Ω, while shunt resistance Rsh was 2 × 108 Ω from I-V characterization, while doping density ND was determined to be 1 × 1017 cm−3 from C-V characterization. Absorption coefficient α was found to vary with semiconductor material and incoming beta energy and used in conjunction with critical parameters from experimentation to accurately model betavoltaic cell performance similar to experimental results. Both implicit equations and explicit estimations were compared to model betavoltaic cell performance.

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Rapporti di organizzazioni sul tema "Solar simulation and experimentation"

Kelly, David, Garth Heutel, Juan Moreno-Cruz e Soheil Shayegh. Solar Geoengineering, Learning, and Experimentation. Cambridge, MA: National Bureau of Economic Research, febbraio 2021. http://dx.doi.org/10.3386/w28442.

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Fikus, John. Global Information Enterprise Simulation (GIESIM) Joint Tactical Information Distribution Systems Simulation Experimentation. Fort Belvoir, VA: Defense Technical Information Center, agosto 2005. http://dx.doi.org/10.21236/ada438999.

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Patel, Lekha, John Zenker, Christian Pattyn, Pierce Warburton, Kurtis Shuler, Lucas McMichael, Peter Blossey et al. Pluminate: Quantifying aerosol injection behavior from simulation, experimentation and observations. Office of Scientific and Technical Information (OSTI), novembre 2023. http://dx.doi.org/10.2172/2430132.

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Sanz, Asier`. Numerical simulation tools for PVT collectors and systems. IEA SHC Task 60, settembre 2020. http://dx.doi.org/10.18777/ieashc-task60-2020-0006.

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The computer-based experimentation covers almost the entire activity chain of the PVT sector. The PVT community carries out very different kind of modelling and simulation labours in order to answer to very diverse needs, such as proof-of-concepts, research, design, sizing, controlling, optimization, validation, marketing, sales, O&M, etc.

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Taveres-Cachat, Ellika Ellika, Roel C. G. M. Loonen, Johannes Eisenlohr, Francesco Goia e Christoph Maurer. Report on Simulation Models of Solar Envelope Components. A cura di Christoph Maurer. IEA SHC Task 56, dicembre 2019. http://dx.doi.org/10.18777/ieashc-task56-2019-0002.

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Ellis, Abraham, Michael Robert Behnke e Ryan Thomas Elliott. Generic solar photovoltaic system dynamic simulation model specification. Office of Scientific and Technical Information (OSTI), ottobre 2013. http://dx.doi.org/10.2172/1177082.

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Kolb, G., D. Neary, M. Ringham e T. Greenlee. Dynamic simulation of a molten-salt solar receiver. Office of Scientific and Technical Information (OSTI), marzo 1989. http://dx.doi.org/10.2172/6346050.

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Wu, S. T. Simulation of Ionospheric Response to Solar Distribution Mechanisms. Fort Belvoir, VA: Defense Technical Information Center, maggio 2003. http://dx.doi.org/10.21236/ada416358.

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Gagnon, Colleen M., e William K. Stevens. Use of Modeling and Simulation (M&S) in Support of Joint Command and Control Experimentation: Naval Simulation System (NSS) Support to Fleet Battle Experiments. Fort Belvoir, VA: Defense Technical Information Center, gennaio 1999. http://dx.doi.org/10.21236/ada461113.

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Concepcion, Ricky James, e Ryan Thomas Elliott. Dynamic Simulation over Long Time Periods with 100% Solar Generation. Office of Scientific and Technical Information (OSTI), dicembre 2015. http://dx.doi.org/10.2172/1233624.

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