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Dissertations / Theses on the topic 'Concentrating systems'

Author: Grafiati

Published: 4 June 2021

Last updated: 21 February 2023

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1

Buie, Damien Charles William. "Optical considerations in solar concentrating systems." University of Sydney. Physics, 2004. http://hdl.handle.net/2123/587.

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To optimise the performance of concentrating solar power systems, a detailed knowledge of the resultant flux distribution in the imaging plane is required. To achieve this, an accurate model of the direct solar beam impinging on the concentrator is essential. This thesis presents an empirical model of the terrestrial solar distribution that has both a high-correlation to observed data and an invariance to a change in location. The model is based on the amount of circumsolar radiation in the direct beam and takes into account the small variations that are due to atmospheric scattering. A

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2

Buie, Damien Charles William. "Optical considerations in solar concentrating systems." Thesis, The University of Sydney, 2003. http://hdl.handle.net/2123/587.

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To optimise the performance of concentrating solar power systems, a detailed knowledge of the resultant flux distribution in the imaging plane is required. To achieve this, an accurate model of the direct solar beam impinging on the concentrator is essential. This thesis presents an empirical model of the terrestrial solar distribution that has both a high-correlation to observed data and an invariance to a change in location. The model is based on the amount of circumsolar radiation in the direct beam and takes into account the small variations that are due to atmospheric scattering. A

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3

Baig, Hasan. "Enhancing performance of building integrated concentrating photovoltaic systems." Thesis, University of Exeter, 2015. http://hdl.handle.net/10871/17301.

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Buildings both commercial and residential are the largest consumers of electricity. Integrating Photovoltaic technology in building architecture or Building Integrated Photovoltaics (BIPV) provides an effective means for meeting this huge energy demands and provides an energy hub at the place of its immediate requirement. However, this technology is challenged with problems like low efficiency and high cost. An effective way of improving the solar cell efficiency and reducing the cost of photovoltaic systems is either by reducing solar cell manufacturing cost or illuminating the solar cells wi

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4

Coventry, Joseph Sydney. "A solar concentrating photovoltaic/thermal collector /." View thesis entry in Australian Digital Theses Program, 2004. http://thesis.anu.edu.au/public/adt-ANU20041019.152046/index.html.

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5

Morfeldt, Johannes. "Optically Selective Surfaces in low concentrating PV/T systems." Thesis, Örebro University, School of Science and Technology, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-7396.

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<p>One of the traditional approaches to reduce costs of solar energy is to use inexpensive reflectors to focus the light onto highly efficient solar cells. Several research projects have resulted in designs, where the excess heat is used as solar thermal energy.</p><p>Unlike a solar thermal system, which has a selective surface to reduce the radiant heat loss, a CPV/T (Concentrating PhotoVoltaic/Thermal) system uses a receiver covered with solar cells with high thermal emittance.</p><p>This project analyzes whether the heat loss from the receiver can be reduced by covering parts of the receive

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6

Gasti, Maria. "Techno-economic Appraisal of Concentrating Solar Power Systems (CSP)." Thesis, Högskolan Dalarna, Energi och miljöteknik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:du-12806.

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The diffusion of Concentrating Solar Power Systems (CSP) systems is currently taking place at a much slower pace than photovoltaic (PV) power systems. This is mainly because of the higher present cost of the solar thermal power plants, but also for the time that is needed in order to build them. Though economic attractiveness of different Concentrating technologies varies, still PV power dominates the market. The price of CSP is expected to drop significantly in the near future and wide spread installation of them will follow. The main aim of this project is the creation of different relevant

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7

Nguyen, Tam Thanh. "Concentrating Solar Thermal Energy Storage Using Amide-Hydride Systems." Thesis, Curtin University, 2017. http://hdl.handle.net/20.500.11937/59669.

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Amide-hydride systems can be used in thermal storage systems by taking advantage of their endothermic/exothermic reactions with hydrogen. This allows the harnessing of concentrated solar energy by utilising thermal storage to alleviate its intermittent nature. Amide-hydride reactions have been widely studied for their low temperature applications. However, the high temperature imide-hydride reactions are more suitable for thermal energy storage. Lithium, magnesium and calcium-based amide-imide-hydride systems were investigated with potential candidates from systems containing calcium metal.

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8

Filatov, Artem. "Concentrating Collector for Torsång District Heating System." Thesis, Högskolan Dalarna, Energiteknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:du-28539.

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In this thesis report for Dalarna University in Borlange and Absolicon company the study of a possibility to add an array of concentrating solar collectors to a Torsång district heating system was done. The whole idea of this work was to make a simulation of this kind of system, trying to get 15-20% of solar fraction, and make an economical evaluation. At the same time, another goal was to make two comparisons: between concentrating and flat-plate collector in the same system, and between two tools for collector analysis – Polysun and Absolicon tool, based on TRNSYS, which was designed to esti

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9

Brogren, Maria. "Optical Efficiency of Low-Concentrating Solar Energy Systems with Parabolic Reflectors." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis : Univ.-bibl. [distributör], 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-3988.

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Paul, Damasen Ikwaba. "Characterisation of solar concentrating systems for photovoltaics and their impact on performance." Thesis, University of Ulster, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.549700.

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The use of concentrating systems has a great potential to become the lowest-cost PV option if the high energy flux in the concentrated PV module can be utilised efficiently. In this study, a PV module with isolated cells was designed and fabricated with the purpose of examining the performance of each cell under concentrated (using CPC and V-trough) and non-concentrated light. Before the experimental characterisation, a detailed optical analysis for the CPC and V-trough collectors was undertaken. It was found that in spite of both concentrators having the same concentration ratio and aperture

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11

Yandt, Mark. "Characterization and Performance Analysis of High Efficiency Solar Cells and Concentrating Photovoltaic Systems." Thesis, Université d'Ottawa / University of Ottawa, 2012. http://hdl.handle.net/10393/20535.

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As part of the SUNRISE project (Semiconductors Using Nanostructures for Record Increases in Solar-cell Efficiency), high efficiency, III-V semiconductor, quantum-dot-enhanced, triple-junction solar cells designed and manufactured by Cyrium Technologies Inc. were integrated into OPEL Solar, MK-I, Fresnel-lens-based, 550x concentrating modules carried on a dual axis tracker. Over its first year of operation 1.8 MWh of AC electrical energy was exported to the grid. Measurements of the direct and indirect components of the insolation, as well as the spectral irradiance of light incident on the d

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Menoufi, Karim Ali Ibrahim. "Life Cycle Assessment of novel Building Integrated Concentrating Photovoltaic systems through environmental and energy evaluations." Doctoral thesis, Universitat de Lleida, 2014. http://hdl.handle.net/10803/131056.

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La realització d'estudis de LCA per a sistemes fotovoltaics és una eina essencial per mesurar el seu nivell de sostenibilitat En aquest sentit, i després de la realització d' una anàlisi teòrica dels estudis publicats de LCA dels sistemes fotovoltaics, s'han trobat algunes llacunes. Aquestes llacunes es refereixen a la manca de varietat d'indicadors de LCA, on la majoria dels estudis depenen del temps de retorn energètic, sent aquest gairebé l'únic indicador (no es té en compte l'ús dels mètodes de perfil ambiental). A més, s'observen dues bretxes relatives a la manca d'estudis de LCA destacan

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Colby, Aaron Henry. "Novel drug delivery systems: pH-responsive expansile nanoparticles & drug concentrating devices as tools for treating cancer." Thesis, Boston University, 2008. https://hdl.handle.net/2144/30651.

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Thesis (Ph.D.)--Boston University<br>New strategies for treatment and methods of drug delivery are required for patients suffering from cancer-the second leading cause of death worldwide. Current chemotherapeutic treatments frequently suffer from poor water solubility, systemic toxicity, poor accumulation within the target tissues and an inability to eradicate all remaining tumor following resection procedures. Nanoparticles (NPs) are extensively investigated as a means to increase drug solubility, alter biodistribution, target specific sites within the body, and minimize drug side effects and

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Duanmu, Deqiang. "Putative inorganic carbon transport and accumulation systems associated with the CO₂ concentrating mechanism in Chlamydomonas reinhardtii." [Ames, Iowa : Iowa State University], 2009. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3373459.

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Nordlander, Svante. "Load Adapted Solar Thermal Combisystems - Optical Analysis and Systems Optimization." Licentiate thesis, Högskolan Dalarna, Miljöteknik, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:du-1020.

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In a northern European climate a typical solar combisystem for a single family house normally saves between 10 and 30 % of the auxiliary energy needed for space heating and domestic water heating. It is considered uneconomical to dimension systems for higher energy savings. Overheating problems may also occur. One way of avoiding these problems is to use a collector that is designed so that it has a low optical efficiency in summer, when the solar elevation is high and the load is small, and a high optical efficiency in early spring and late fall when the solar elevation is low and the load is

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Colby, Aaron Henry. "Novel drug delivery systems: pH-responsive expansile nanoparticles & drug concentrating devices as tools for treating cancer." Thesis, Boston University, 2014. https://hdl.handle.net/2144/12957.

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Thesis (Ph.D.)--Boston University<br>New strategies for treatment and methods of drug delivery are required for patients suffering from cancer-the second leading cause of death worldwide. Current chemotherapeutic treatments frequently suffer from poor water solubility, systemic toxicity, poor accumulation within the target tissues and an inability to eradicate all remaining tumor following resection procedures. Nanoparticles (NPs) are extensively investigated as a means to increase drug solubility, alter biodistribution, target specific sites within the body, and minimize drug side effects and

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17

Gaynullin, Bakhram. "LASER-TESTING RIG : Measurement System for evaluation of Shape of concentrating reflector for solar collector Absolicon X10." Thesis, Högskolan Dalarna, Energi och miljöteknik, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:du-4645.

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This Thesis project is a part of the all-round automation of production of concentrating solar PV/T systems Absolicon X10. ABSOLICON Solar Concentrator AB has been invented and started production of the prospective solar concentrated system Absolicon X10. The aims of this Thesis project are designing, assembling, calibrating and putting in operation the automatic measurement system intended to evaluate the shape of concentrating parabolic reflectors.On the basis of the requirements of the company administration and needs of real production process the operation conditions for the Laser testing

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18

Wang, Wujun. "Development of an Impinging Receiver for Solar Dish-Brayton Systems." Doctoral thesis, KTH, Kraft- och värmeteknologi, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-177531.

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A new receiver concept utilizing impinging jet cooling technology has been developed for a small scale solar dish-Brayton system. In a typical impinging receiver design, the jet nozzles are distributed evenly around the cylindrical absorber wall above the solar peak flux region for managing the temperature at an acceptable level. The absorbed solar irradiation is partially lost to the ambient by radiation and natural convection heat transfer, the major part is conducted through the wall and taken away by the impingement jets to drive a gas turbine. Since the thermal power requirement of a 5 kW

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19

Trahan, Jamie. "A Technical and Economic Comparative Analysis of Sensible and Latent Heat Packed Bed Storage Systems for Concentrating Solar Thermal Power Plants." Scholar Commons, 2015. https://scholarcommons.usf.edu/etd/5598.

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Though economically favorable when compared to other renewable energy storage technologies, thermal energy storage systems for concentrating solar thermal power (CSP) plants require additional cost reduction measures to help transition CSP plants to the point of grid-parity. Thermocline packed bed storage is regarded as one potential low cost solution due to the single tank requirement and low cost storage media. Thus sensible heat storage (SHS) and latent heat storage (LHS) packed bed systems, which are two thermocline varieties, are frequently investigated. LHS systems can be further classif

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20

Schneider, Simon Verfasser], Robert [Akademischer Betreuer] Pitz-Paal, and Marek [Akademischer Betreuer] [Behr. "Influences of Mirror Shape Accuracy on Performance Prediction for Parabolic Trough Concentrating Solar Power Systems / Simon Schneider ; Robert Pitz-Paal, Marek Behr." Aachen : Universitätsbibliothek der RWTH Aachen, 2017. http://d-nb.info/1162451440/34.

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21

COCCIA, GIANLUCA. "Design, Manufacturing, Testing, and Mathematical Modeling of Concentrating Solar Systems: a Study Applied to Prototypes of Parabolic Trough Collector and Solar Box Cooker." Doctoral thesis, Università Politecnica delle Marche, 2017. http://hdl.handle.net/11566/245262.

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L'utilizzo di energia solare termica deve essere sostenuto per ridurre il consumo di fonti fossili climalteranti. Nel presente studio si sono progettati e realizzati due sistemi solari a concentrazione: un collettore parabolico assiale (PTC) ed un forno solare a scatola. Il PTC ha un angolo di bordo di 90° ed un rapporto di concentrazione di 19,89. Sul concentratore, realizzato in sandwich composito, sono state applicate pellicole in alluminio ad elevata riflettanza. Il ricevitore è un tubo di acciaio rivestito da una vernice selettiva. Il sistema di inseguimento è governato da un algoritmo so

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22

Xu, Ben. "Heat Transfer and Flow in Solar Energy and Bioenergy Systems." Diss., The University of Arizona, 2015. http://hdl.handle.net/10150/578616.

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The demand for clean and environmentally benign energy resources has been a great concern in the last two decades. To alleviate the associated environmental problems, reduction of the use of fossil fuels by developing more cost-effective renewable energy technologies becomes more and more significant. Among various types of renewable energy sources, solar energy and bioenergy take a great proportion. This dissertation focuses on the heat transfer and flow in solar energy and bioenergy systems, specifically for Thermal Energy Storage (TES) systems in Concentrated Solar Power (CSP) plants and op

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23

Guarnieri, Raniero Alberto. "Novel approaches to the design of domestic solar hot water systems." Thesis, Queensland University of Technology, 2005. https://eprints.qut.edu.au/16056/1/Raniero_Guarnieri_Thesis.pdf.

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Domestic solar hot water units, if properly designed, are capable of providing all hot water needs in an environmentally friendly and cost-effective way. Despite 50 years of development, commercial technology has not yet achieved substantial market penetration compared to mainstream electric and gas options. Therefore, alternate designs are warranted if they can offer similar or greater performance for a comparable cost to conventional units. This study proved that such alternatives are possible by designing and testing two novel solar hot water systems (SHWS). The first system used com

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Guarnieri, Raniero Alberto. "Novel Approaches to the Design of Domestic Solar Hot Water Systems." Queensland University of Technology, 2005. http://eprints.qut.edu.au/16056/.

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Domestic solar hot water units, if properly designed, are capable of providing all hot water needs in an environmentally friendly and cost-effective way. Despite 50 years of development, commercial technology has not yet achieved substantial market penetration compared to mainstream electric and gas options. Therefore, alternate designs are warranted if they can offer similar or greater performance for a comparable cost to conventional units. This study proved that such alternatives are possible by designing and testing two novel solar hot water systems (SHWS). The first system used com

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Yandt, Mark. "Characterization Techniques and Optimization Principles for Multi-Junction Solar Cells and Maximum Long Term Performance of CPV Systems." Thesis, Université d'Ottawa / University of Ottawa, 2017. http://hdl.handle.net/10393/35870.

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Two related bodies of work are presented, both of which aim to further the rapid development of next generation concentrating photovoltaic systems using high efficiency multi junction solar cells. They are complementary since the characterization of commercial devices and the systematic application of design principles for future designs must progress in parallel in order to accelerate iterative improvements. First addressed, is the field characterization of state of the art concentrating photovoltaic systems. Performance modeling and root cause analysis of deviations from the modeling resul

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Simsek, Mehmet [Verfasser], Frank [Gutachter] Nürnberger, and Jochen [Gutachter] Kaiser. "Reaktivitätsmuster des Orexin-Systems im Hypothalamus der C57BL- und der C3H-Maus unter Wach-Bedingung, während des Schlafes und nach Schlafentzug – Interaktion mit dem Melanin-concentrating hormone (MCH)-System / Mehmet Simsek ; Gutachter: Frank Nürnberger, Jochen Kaiser." Frankfurt am Main : Universitätsbibliothek Johann Christian Senckenberg, 2018. http://d-nb.info/1164077449/34.

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Howard, Dustin F. "Modeling, simulation, and analysis of grid connected dish-stirling solar power plants." Thesis, Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/34832.

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The percentage of renewable energy within the global electric power generation portfolio is expected to increase rapidly over the next few decades due to increasing concerns about climate change, fossil fuel costs, and energy security. Solar thermal energy, also known as concentrating solar power (CSP), is emerging as an important solution to new demands for clean, renewable electricity generation. Dish-Stirling (DS) technology, a form of CSP, is a relatively new player in the renewable energy market, although research in the technology has been ongoing now for nearly thirty years. The firs

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Nahhas, Tamar. "Materials and thermal storage systems by sensible heat for thermodynamic electro-solar plants." Thesis, Perpignan, 2017. http://www.theses.fr/2017PERP0027.

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L'énergie solaire est connue pour sa nature intermittente par rapport aux ressources d’énergie fossile. Cette observation souligne la nécessité d'utilisation d’un système de stockage d'énergie thermique. Le système de stockage thermocline est considéré comme un système de stockage rentable. La présente thèse vise à étudier le potentiel des roches basaltiques et siliceuses comme des candidates matériaux de stockage pour les centrales solaires concentrées. Les études expérimentales des propriétés thermo-physiques et thermomécaniques de ces roches à des températures allant jusqu'à 1000°C montrent

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29

Hallberg, Maria, and Elin Hallme. "Introducing a central receiver system for industrial high-temperature process heat applications : A techno-economic case study of a large-scale CST plant system in a South African manganese sinter plant." Thesis, KTH, Kraft- och värmeteknologi, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-249067.

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The objective of this thesis was to investigate the potential for introducing a concentrating solar thermal (CST) central receiver plant system based on flexible heliostats - HelioPods - to provide high-temperature process heat in industrial applications. A CST plant system was designed in MATLAB, optically simulated for three design days in the ray-tracing software Tonatiuh and further analyzed in MATLAB by interpolating the results for each hour of the year. A case study was made on introducing a CST plant system based on HelioPods in a South African manganese sinter plant. The study include

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Henderson, Courtney Francis Keith. "The Chemical and Biological Mechanisms of Nutrient Removal from Stormwater in Bioretention Systems." Thesis, Griffith University, 2009. http://hdl.handle.net/10072/366977.

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High concentrations of dissolved nutrients in stormwater have been identified as contributing to eutrophication of receiving waterways near urban areas. To reduce dissolved nutrient concentrations in stormwater a range of devices such as wetlands and bioretention systems are used. Bioretention systems are increasingly employed for their supposedly high nutrient removal capacity, however very little is known about their treatment efficiency or the chemical and biological mechanisms controlling their function. This research aimed firstly to test and compare the efficiency of different bioretenti

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Galagan, A. A. "High concentration photovoltaic thermal system." Thesis, Сумський державний університет, 2013. http://essuir.sumdu.edu.ua/handle/123456789/33625.

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Researchers from IBM have created a very impressive and affordable new photovoltaic system that is capable of concentrating solar radiation up to 2000 times. The system is also capable of converting 80% of incoming solar radiation into useful energy. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/33625

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Goldman, Dan. "The Architecture of templers in their colonies in Eretz-Israel, 1868-1948, and their settlements in the United States, 1860-1925 : with a concentration on: architectural history of templers' colonies in Israel and the U.S. /." [S.l.] : [s.n.], 2003. http://lib.haifa.ac.il/systems/elect_data/etexts/1102075.pdf.

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Mahfuz, Mohammad Upal. "Fundamentals of Concentration-encoded Molecular Communication." Thesis, Université d'Ottawa / University of Ottawa, 2014. http://hdl.handle.net/10393/31767.

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Molecular communication (MC) is a new bio-inspired communication paradigm towards realizing the communication and networking at the nanoscale to microscale dimensions among a vast number of engineered natural and/or artificial nanomachines communicating with each other to form a nanonetwork. In this thesis, we investigate a concentration-encoded molecular communication (CEMC) system where the transmitting nanomachine (TN) and the receiving nanomachine (RN) communicate with a single type of information molecules by modulating the transmission rate of information molecules at the TN. The informa

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Muron, Aaron C. D. "Field Installation of a Fully Instrumented Prototype Solar Concentrator System: Thermal and Photovoltaic Analysis." Thesis, Université d'Ottawa / University of Ottawa, 2013. http://hdl.handle.net/10393/26245.

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Concentrator photovoltaics (CPV) is one of the most promising renewable technologies owing to its high efficiency, scalability, low operating expense, and small environmental impact. However, there is much research and advancements to be made before CPV is established as a cost competitive energy technology. To this end, Morgan Solar has developed the Sun Simba, an innovative light weight and low cost CPV module. Under the “Advancing Photonics for Economical Concentration Systems” (APECS) project, outdoor CPV test and measurement systems were designed and constructed at the University of Ottaw

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Melton, Patricia Mary. "The characterisation of liquid atomisation systems." Thesis, University of Essex, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.235599.

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Lin, Tao. "Concentration of bacterial pathogens using microfluidic dielectrophoresis systems." Thesis, University of British Columbia, 2010. http://hdl.handle.net/2429/23815.

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Over the course of human history, people have been always troubled by unpredictable outbreaks of pathogenic bacteria. A rapid, specific and durable diagnostic sensor for detecting pathogens in a timely fashion is essential for identifying unknown infectious diseases and reacting by offering proper patient management and public health involvement without delay. Development of a microfluidic system incorporating interdigitated electrodes for characterizing concentration, purification and differentiation of pathogenic bacteria is presented. Polystyrene microspheres, Salmonella typhimurium, Campyl

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Calixto, João Paulo Duarte. "Concentration of tumor biomarkers using aqueous biphasic systems." Master's thesis, Universidade de Aveiro, 2015. http://hdl.handle.net/10773/15353.

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Mestrado em Bioquímica - Bioquímica Clínica<br>According to the World Health Organization, around 8.2 million people die each year with cancer. Most patients do not perform routine diagnoses and the symptoms, in most situations, occur when the patient is already at an advanced stage of the disease, consequently resulting in a high cancer mortality. Currently, prostate cancer is the second leading cause of death among males worldwide. In Portugal, this is the most diagnosed type of cancer and the third that causes more deaths. Taking into account that there is no cure for advanced stages of pro

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Jie, Shi Chang. "Chinese New Telemetry Onboard System." International Foundation for Telemetering, 1994. http://hdl.handle.net/10150/611666.

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International Telemetering Conference Proceedings / October 17-20, 1994 / Town & Country Hotel and Conference Center, San Diego, California<br>This paper at first gives a brief historical review of Chinese development of telemetering onboard system and then make a brief introduction of new onboard system from several respects.

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McClure-Sharp, Jilliane Mary, and mikewood@deakin edu au. "Regulation of corticotropin-releasing factor concentration and overflow in the rat central nervous system." Deakin University. School of Biological and Chemical Sciences, 1998. http://tux.lib.deakin.edu.au./adt-VDU/public/adt-VDU20060802.143911.

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Corticotropin-releasing factor (CRF) is the primary hormone of the hypothalamo-pituitary adrenal axis (HPA-axis). In addition to its endocrine function, it has been proposed that CRF acts as a neurotransmitter. The widespread distribution of CRF immunoreactivity and CRF receptors in the rat central nervous system (CNS) supports this theory. Immunohistochemical studies have demonstrated high levels of CRF immunoreactivity the rat hypothalamus, a brain region involved in the regulation and integration of a variety of endocrine and autonomic homeostatic mechanisms. CRF has been shown to be

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Klugman, Piers. "Electrical design and commissioning of a solar trough concentrating system." Thesis, Klugman, Piers (2015) Electrical design and commissioning of a solar trough concentrating system. Other thesis, Murdoch University, 2015. https://researchrepository.murdoch.edu.au/id/eprint/27599/.

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This thesis outlines the electrical design, re-commissioning and testing of a photovoltaic (PV) solar trough concentrating system (STCS) at Murdoch University’s South St campus. In order to become familiar with the system a literature review and system audit were undertaken. From this it was clear that a substantial amount of work was required to be undertaken to able to re-commission the system and achieve grid connection. Approval for the grid connection was then sought and granted from the University’s facility management. As part of the approval process the electrical design and sp

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Feng, Zhenzhou. "Design, build and testing of a concentrating solar dish system." Thesis, Feng, Zhenzhou (2017) Design, build and testing of a concentrating solar dish system. Honours thesis, Murdoch University, 2017. https://researchrepository.murdoch.edu.au/id/eprint/40399/.

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This study describes the retrofitting of an old satellite dish as a concentrating solar dish system and investigates the factors that influence its performance concerning power generation. The satellite dish retrofit is viable for future development. The scheme of the project is divided into modelling, simulation, and optimisation. Modelling and simulation for the retrofitted satellite dish have been carried out by using System Advisor Model (SAM) and Franco’s program. According to the simulation results generated by SAM, the target dish can collect a maximum power of 2.987 MWh in January and

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Weatherwax, Trent. "Integrated mining and preconcentration systems for nickel sulfide ores." Thesis, University of British Columbia, 2007. http://hdl.handle.net/2429/238.

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As part of a strategic research initiative at UBC to design and evaluate integrated underground mining and mineral processing systems, work has been done to determine how to utilize the coarse rejects of pre-concentration in the underground environment. An amenability study for nine orebodies from four of Xstrata Nickel’s Ontario operations evaluated both processing and waste disposal methods. Metallurgically the orebodies showed amenability to dense media separation and conductivity sorting. The dense media results showed high mass rejections and high metal recoveries for all nine orebodies

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Conte, Jeffrey E. "Analysis of a Fresnel concentrating spectral divider for a photovoltaic system." Virtual Press, 1987. http://liblink.bsu.edu/uhtbin/catkey/494976.

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To improve photovoltaic system efficiencies, concentrating spectral dividers are used to separate solar light, and to focus each spectral portion onto photovoltaic cells of matching spectral response. In this investigation, an optical analysis is developed to study the feasibility for use of a Fresnel half-lens as a concentrating spectral divider. To facilitate the analysis, an existing curved-base linear Fresnel lens ray-trace model has been modified and expanded. Solar limb-darkening has been incorporated into the theory by means of a digitized sun model. The lens model allows for variation

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Adkins, Deborah Anne. "Experimental and numerical modelling of mid-concentration photovoltaic concentrator systems." Thesis, University of Nottingham, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.594866.

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For photovoltaics to achieve wide-scale implementation it is essential that their cost is reduced while maintaining or exceeding the present level of solar to electrical conversion performance. Concentrating solar energy onto a photovoltaic cell allows a reduction in the output electricity cost, if the cost of the concentrator is less than that of the displaced photovoltaic materials. Photovoltaic cell efficiency is shown to decrease with increasing temperature, causing the photovoltaic cells to exhibit both short-term (efficiency loss) and long term (irreversible damage) degradation due to ex

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Hatcher, M. G. "COMAS development for concentration probing of gas phase discharge systems." Thesis, Swansea University, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.637245.

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The work presented in this thesis describes the further development of the pump-probe laser spectroscopic technique known as Concentration-Modulated Absorption Spectroscopy (COMAS), concentrating on its use as an analytical tool for the investigation of various atomic systems. The systems analysed here include a direct current glow discharge with a lithium cathode, and a neon hollow cathode discharge lamp. The COMAS method necessitates the use of a Lock-In Amplifier (LIA) for signal derivation and output measurement. A substantial feature of the work presented here is concerned with the way in

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Chow, Simon Ka Ming. "Integration of High Efficiency Solar Cells on Carriers for Concentrating System Applications." Thèse, Université d'Ottawa / University of Ottawa, 2011. http://hdl.handle.net/10393/19932.

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High efficiency multi-junction (MJ) solar cells were packaged onto receiver systems. The efficiency change of concentrator cells under continuous high intensity illumination was done. Also, assessment of the receiver design on the overall performance of a Fresnel-type concentration system was investigated. We present on receiver designs including simulation results of their three-dimensional thermal operation and experimental results of tested packaged receivers to understand their efficiency in real world operation. Thermal measurements from solar simulators were obtained and used to calib

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Lynn, Michael David. "The development and distribution of heavy mineral concentrations in alluvial systems." Thesis, Rhodes University, 1992. http://hdl.handle.net/10962/d1005549.

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The objective of this review is to summarise the characteristics, significance and evolution of heavy minerals and their accumulations, and to identify the key controls on the development and distribution of heavy mineral concentrations in alluvial systems. These controls can be broadly classified as tectonic setting, geomorphic setting and grain-scale concentrating processes, each of which is discussed. Based on this review, exploration models are developed which are designed to indicate favourable localities for the accumulation of heavy minerals, and trends likely to be exhibited within the

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Wu, Yuechen, and Raymond K. Kostuk. "Two-junction holographic spectrum-splitting microconcentrating photovoltaic system." SPIE-SOC PHOTO-OPTICAL INSTRUMENTATION ENGINEERS, 2017. http://hdl.handle.net/10150/623284.

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Spectrum-splitting is a multijunction photovoltaic technology that can effectively improve the conversion efficiency and reduce the cost of photovoltaic systems. Microscale PV design integrates a group of microconcentrating photovoltaic (CPV) systems into an array. It retains the benefits of CPV and obtains other benefits such as a compact form, improved heat rejection capacity, and more versatile PV cell interconnect configurations. We describe the design and performance of a two-junction holographic spectrum-splitting micro-CPV system that uses GaAs wide bandgap and silicon narrow bandgap PV

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Cikalo, Maria Gillian. "Separation and quantification of weakly-absorbing and low-concentration analytes by capillary electrophoresis." Thesis, University of York, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.321675.

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Sarmah, Nabin. "Design and performance evaluation of a low concentrating line-axis dielectric photovoltaic system." Thesis, Heriot-Watt University, 2012. http://hdl.handle.net/10399/2656.

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This thesis presents a detailed investigation of the design optimisation and performance analysis of a dielectric concentrator for building façade integration at high latitudes (>55°). Considering the seasonal variation of the sun’s position at these latitudes, a concentrating photovoltaic (CPV) system with stationary concentrators of large acceptance angle and low concentration ratio is a suitable alternative to conventional flat plate photovoltaic (PV) modules. A well designed dielectric asymmetric compound parabolic concentrator (ACPC) is a suitable choice to achieve optimum range of accept

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