Дисертації з теми "Solar Parabolic Trough Collector"
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Brooks, Michael John. "Performance of a parabolic trough solar collector." Thesis, Link to the online version, 2005. http://hdl.handle.net/10019/984.
Повний текст джерелаHachicha, Ahmed Amine. "Numerical modelling of a parabolic trough solar collector." Doctoral thesis, Universitat Politècnica de Catalunya, 2013. http://hdl.handle.net/10803/129729.
Повний текст джерелаAlsaady, Mustafa Mohammed H. "Innovative design for ferrofluids based parabolic trough solar collector." Thesis, University of Nottingham, 2018. http://eprints.nottingham.ac.uk/48221/.
Повний текст джерелаCarrillo, Juan Felipe (Carrillo Salazar). "Mechanical development of an actuation system for a parabolic solar trough collector." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/83687.
Повний текст джерелаCataloged from PDF version of thesis.
Includes bibliographical references (page 26).
This thesis documents my personal contribution to the development of a hydraulic-based actuation system for a solar trough collector. The goal of this project was to design the actuation system using hydraulic actuators for a four meter solar collector prototype in Pittsfield, New Hampshire. After considering several hydraulic system architectures and conducting in-depth analysis into two of them, the idler pulley scheme was chosen. This mechanism uses a double rod end hydraulic actuator connected to wire rope wrapped around a capstan drum and an idler pulley. The model was optimized for mechanical performance, and it is expected to be a more cost effective option than the existing actuation system in New Hampshire once the controls equipment required to actuate the hydraulic cylinders for the new design is specified.
by Juan Felipe Carrillo.
S.B.
Woodrow, Oliver Rhys. "Characterisation of a parabolic trough collector using sheet metal and glass mirror strips." Diss., University of Pretoria, 2017. http://hdl.handle.net/2263/62804.
Повний текст джерелаDissertation (MEng)--University of Pretoria, 2017.
Chemical Engineering
MEng
Unrestricted
Figueredo, Stacy L. (Stacy Lee) 1981. "Parabolic trough solar collectors : design for increasing efficiency." Thesis, Massachusetts Institute of Technology, 2011. http://hdl.handle.net/1721.1/68524.
Повний текст джерелаCataloged from PDF version of thesis.
Includes bibliographical references (p. 193-200).
Parabolic trough collectors are a low cost implementation of concentrated solar power technology that focuses incident sunlight onto a tube filled with a heat transfer fluid. The efficiency and cost of the parabolic trough collector designs is influenced by structural stiffness, choice of materials, assembly tolerances, mirror cleanliness and wear. Current performance estimates of solar trough optical field efficiencies are 54.2% [1]. The goal of this research is to identify general methods and specific design concepts for achieving increased collector efficiency. This thesis has investigated improvements in the design of a parabolic trough module by looking first at the overall structural concept of the collector to reduce complexity while maintaining structural stability under wind loading conditions. In the process of evaluating the feasibility of one such concept, a monolithic reflector panel with a mirror film front surface, details related to the mirror surface efficiency were investigated. At the panel-structure to mirror interface, surface roughness of the underlying structural backing was studied to understand performance effects on the mirror film surface that would make one backing material potentially more suitable than another would. In this case it was found that three materials tested: gel-coated fiberglass, rolled aluminum, and rolled steel were all similarly effective when compared to a more expensive mirrored aluminum backing material. When looking at the integration of the larger structural changes with the factors that affect surface reflectivity of parabolic mirrors, it became apparent that contamination of the surfaces and cleaning were major factors in reduced module effectiveness. Given that the conceptual development of the structure is ongoing, research into contamination factors and potential cleaning solutions were considered in such a way that panel cleaning solutions could be integrated into the trough module design from the start. A vortex generator cleaning concept, which uses V-shaped extruded forms to create vortices over a mirror panel in the presence of flow over the surface, was tested as a passive cleaning solution.
by Stacy L. Figueredo.
Ph.D.
Sotte, Marco. "Design, test and mathematical modeling of parabolic trough solar collectors." Doctoral thesis, Università Politecnica delle Marche, 2012. http://hdl.handle.net/11566/242075.
Повний текст джерелаSolar radiation at its origin is a high-exergy energy source: the Sun has an irradiance of about 63 MW/m2. But on the Earth’s surface solar energy flow dramatically decreases. For this reason, when high temperatures or high-exergy need to be reestablished, concentrated solar systems are adopted. Among all possible geometries, parabolic trough collectors are by far the most widespread technology. A field of usage of PTCs is in industrial process heat: this application has a dramatic potential and can be adopted at latitudes like those of central and southern europe. In this thesis the results of research project (PTC.project) for the study of PTCs in IPH and other heat demands in the temperature range from 80 to 250 °C are exposed. The design and manufacture of two prototypes are described in detail, giving complete information on geometrical characteristics, materials and manufacturing processes. Then the results of preliminary tests on the mentioned prototypes are produced, together with the characteristics of a test bench designed to determine PTCs performances with water and heat transfer oil as working fluids in a temperature range from 10 to 150 °C. Then a mathematical model, able to determine the performance of any PTC is described: the model accounts for optical and thermal losses of the collector, and also contains a routine code to calculate the solar position. In the end a simulation environment for annual analysis of the performance of a PTC applied to a specific process heat demand load is presented and the results obtained on a realistic heat demand yearly profile are described. The energetic results suggest that there could be space for this technology in the variety of renewable energies that will be needed to meet international goals in terms of energy and environment in the nearest future. But the experience acquired also suggests that investments are needed if an acceleration on the spreading of PTCs and other CSP technologies is to be realized
Nyberg, Fanny. "Evaluation of Convection Suppressor for Concentrating Solar Collectors with a Parabolic Trough." Thesis, Umeå universitet, Institutionen för tillämpad fysik och elektronik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-148543.
Повний текст джерелаAbsolicon Solar Collector AB I Härnösand, Sverige, utvecklar koncentrerande solfångare med ett paraboliskt tråg. I solfångarens tråg uppstår termiska förluster som en följd av konvektion. En konvektionsreducerare tillverkades och användes som metod för att minska de termiska förlusterna i tråget. Målet med projektet var att testa och utvärdera konvektionsreduceraren för koncentrerande solfångare med ett paraboliskt tråg samt dess inverkan på verkningsgraden i två olika positioner för tråget, horisontell och lutande. För att kunna mäta konvektionsreducerarens inverkan på solfångaren mättes först solfångarens prestanda utan konvektionsreduceraren i de två olika positionerna, detta resultat användes som referens efter validering. Valideringen gjordes genom att resultatet jämfördes sedan med två andra prestandamätningar (quasi-dynamical test) av solfångaren gjorda av två olika institut, Research Institute of Sweden och SPF Institut für Solartechnik (Schweiz). Därefter, när konvektionsreduceraren var tillverkat och testad i de olika positionerna på samma sätt som mätningarna utan konvektionsreducerare, jämfördes resultaten med och utan konvektionsreducerareet samt att en utvärdering gjordes av dess inverkan. Resultatet visade en signifikant förbättring av solfångarens prestanda i form av minskade termiska förluster när konvektionsreduceraren användes och därav ökad verkningsgrad.
Nation, Deju Denton. "A conceptual electrical energy storage (EES) receiver for solar parabolic trough collector (PTC) power plants." Thesis, University of Leeds, 2013. http://etheses.whiterose.ac.uk/5331/.
Повний текст джерелаPaetzold, Joachim Meinert. "A Wind Engineering Analysis of Parabolic Trough Concentrating Solar Power." Thesis, The University of Sydney, 2016. http://hdl.handle.net/2123/15256.
Повний текст джерелаIbrahim, Idowu David. "Development of Smart Parabolic Trough Solar Collector for Water Heating and Hybrid Polymeric Composite Water Storage Tank." Electronic Thesis or Diss., université Paris-Saclay, 2020. http://www.theses.fr/2020UPASG049.
Повний текст джерелаIn recent years, various energy sources and methods have been used to heat water in domestic and commercial buildings. The known sources for water heating include electrical energy and solar radiation energy in the urban regions or burning of firewood in the rural areas. Several water heating methods may be used such as electrical heating elements, solar concentrators, flat plate collectors and evacuated tube collectors. This thesis focuses on ways to further improve the system’s performance for water heating through the combined use of solar energy and solar concentrator technique. Furthermore, the study proposed an alternative design method for the hot water storage tank.The solar collector-supporting frame was designed and analysed using Solidworks®. The forces acting on the structural members were simulated to determine the capacity of the frame to sustain the load, and the possible regions on the supporting frame, which could potentially fail while in operation.Energy performance was simulated for five years of operation using Matlab Simulink® software. This simulation was based on the use of three different data. The first is a five-year weather database of the City of Tshwane in South Africa. The second is a hot water consumption profile for a typical household. The third is the cost of additional heating with electricity depending on the time of use. This simulation allowed the validation of the choices of the different elements of the heating system.This study allowed the development of an approach for the design of a solar heating system by optimising the dimensions of the different elements for a typical household and a specific region.In addition, the use of polymeric materials and other materials like polyurethane, salt and aluminium is possible for the development of a hot water storage tank based on their inherent properties.Extending the findings in this thesis will further improve the designs for solar concentrator technologies and solar water heating systems. Therefore, some recommendations and suggestions are highlighted in order to improve the overall system design, analysis and performance
Nolte, Henriette C. "Analysis and Optimisation of a Receiver Tube for Direct Steam Generation in a Solar Parabolic Trough Collector." Diss., University of Pretoria, 2014. http://hdl.handle.net/2263/45965.
Повний текст джерелаDissertation (MEng)--University of Pretoria, 2014.
tm2015
Mechanical and Aeronautical Engineering
MEng
Unrestricted
Mohammed, Hussein A. Mohammed. "Heat Transfer Enhancement in a Parabolic Trough Solar Collector (PTSC) Using Passive Technique and Nanofluids/ Hybrid Nanofluids." Thesis, Curtin University, 2021. http://hdl.handle.net/20.500.11937/87667.
Повний текст джерелаUsta, Yasemin. "Simulations Of A Large Scale Solar Thermal Power Plant In Turkey Using Concentrating Parabolic Trough Collectors." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12612800/index.pdf.
Повний текст джерелаs in Kramer Junction, California. The CSTES consists of a PTC loop that drives a Rankine cycle with superheat and reheat, 2-stage high and 5-stage low pressure turbines, 5-feedwater heaters and a dearator. As a first approximation, the model did not include significant storage or back-up heating. The model&rsquo
s predictions were benchmarked against published data for the system in California for a summer day. Good agreement between the model&rsquo
s predictions and published data were found, with errors usually less than 10%. Annual simulations were run using weather data for both California and Antalya, Turkey. The monthly outputs for the system in California and Antalya are compared both in terms of absolute monthly outputs and in terms of ratios of minimum to maximum monthly outputs. The system in Antalya is found to produce30 % less energy annually than the system in California. The ratio of the minimum (December) to maximum (July) monthly energy produced in Antalya is 0.04.
Al-Hasnawi, Hassan. "Solar Heat in Industrial Processes : Integration of Parabolic Trough Solar Collectors Dairy Plants and Pharmaceutical Plants." Thesis, Umeå universitet, Institutionen för tillämpad fysik och elektronik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-125025.
Повний текст джерелаCOCCIA, 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.
Повний текст джерелаUse of solar thermal energy has to be sustained to reduce consumption of climate-changing fossil fuels. Thus, in this study two concentrating solar prototypes were designed and manufactured: a parabolic trough collector (PTC) and a solar box cooker. The PTC has a 90° rim angle and a concentration ratio of 19.89. The concentrator is a sandwich composite structure with high-reflectance aluminum foils applied on it. The receiver is a steel pipe painted with a selective coating. The tracking system is based on a solar-position computer program. Experimental tests were carried out with water and temperatures up to 85 °C. Thermal efficiency, incident angle modifier, and time constant curves were found. Results show that the thermal efficiency equation is comparable with that of other PTCs in literature. Experimental data were utilized to validate a simulation environment able to determine the yearly yield of PTCs. The simulation was carried out to evaluate the convenience in adopting metal-based nanofluids respect to the base fluid (water). Five inlet fluid temperatures and three mass flow rates were analyzed. Results show that only Au, TiO2, ZnO, and Al2O3 nanoparticles, at the lowest concentrations, present reduced improvements respect to water. The solar box cooker is a high concentration ratio prototype (11.57). The cooker has a cooking chamber with a glass cover on the top and is composed by two rows of booster mirrors. The prototype allows both an azimuth and a zenith manual orientation. Tests without load were carried out to evaluate the maximum cooker temperature. Tests with load, conduced using aluminum vessels containing a certain amount of water, were accomplished both with non-painted vessels and black-coated ones, and with one or two vessels. Additional tests were carried out with peanut oil. Using this fluid, temperatures higher than the water ones were achieved (> 200 °C) and results exhibited values comparable to those in literature.
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.
Повний текст джерелаBialobrzeski, Robert Wetherill. "Optimization of a SEGS solar field for cost effective power output." Thesis, Atlanta, Ga. : Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/24631.
Повний текст джерелаMarchesini, Camilla. "Modelling and Verification of a Correction Factor to Evaluate the Efficiency of Solar Thermal Collectors with the Rapid Test Method." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amslaurea.unibo.it/11741/.
Повний текст джерелаShah, Hassim. "Integration of solar thermal collectors in the dairy industry: A techno-economic assessment : A case study of Dubai." Thesis, Uppsala universitet, Institutionen för elektroteknik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-446212.
Повний текст джерелаLemaitre, Emile, and Michael Peri. "Techno-Economic Analysis of Parabolic Trough Collectors : A case study for two industrial parks in Zhejiang, China." Thesis, KTH, Hållbar utveckling, miljövetenskap och teknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-256528.
Повний текст джерелаAtt omvandla industrins energisystem med förnyelsebara energikällor är väsentligt för att bromsa klimatförändringarna. Det är inget undantag för Kina, som nuvarande har de största absoluta nivåerna av utsläpp av växthusgaser i världen. Industrin står för ca två tredjedelar av den nationella energiförbrukningen och kol är landets största energikälla. Integrerandet av andra alternativ såsom solenergi kan dock hjälpa till i landets energiomvandling. Denna rapport syftar till att presentera en tekno-ekonomisk analys av en decentraliserad solfångare och ge indikation på lönsamhet samt i vilken grad tekniken kan förse behovet av ånga för två industrier, textil och fiske, i Zhejiang provinsen i östra Kina. Den solfångarteknik som används är ett system med Parabolic trough collectors (PTCs) med integrerad gaseldad ångpanna. Systemet jämförs med kraftvärmeverk som drivs med kol. De analyserade faktorerna är takytan, solar fraction, solinstrålning, kostnad för ånga samt ångpannans bränslekostnader. Besparingarna för CO2-utsläpp beror på den potentiella installationsytan. Ju större installationsyta, desto högre kapacitet och därmed högre CO2-besparingar. Andelen av behovet ånga som kan förses med solfångare är i direkt proportion till takytan och det totala behovet. Fiskeindustrin, som har lägre ångbehov i relation till takyta, visar sig kunna spara den största relativa mängden CO2-utsläpp. Olika scenarier presenteras, där bränslekostnaden och typ av bränsle för PTC-systemets ångpanna modifieras, kostnaden för ånga från de centraliserade leverantörerna justeras och solar fraction ändras mellan 35% och 50%. Besparingarna i CO2-utsläpp beror på vilket bränsle som används samt solar fraction. Större CO2-reduktion är möjlig med en gaseldad panna jämfört med en koleldad. Dock är en koleldad panna lönsammare när den matchar det låga priset på kol som används för de centraliserade leverantörerna. Scenariot med de största CO2-besparingarna uppnås med en hög solar fraction på 50% och en naturgaseldad panna. De årliga CO2-besparingarna varierar från 15 ton per år för det företag som har den lägsta ångkapacitet, upp till 2090 ton per år för ett företag med en av den högsta kapaciteten ånga. En annan viktig faktor är företagens aktivitet per år. Företaget som har minst aktiva dagar per år (84 av 365 dagar), är ej lönsamt i något av de testade scenarierna. Bränslekostnaderna för pannan har emellertid visat sig vara en av de viktigaste faktorerna för resultatet som avgör om det undersökta PTC-systemet är lönsamt eller inte. Bland alla företagen fanns det bara ett som kunde förse hela sitt ångbehov, med PTC-systemet. Detta indikerar att andra energikällor måste införas för att förse företagens ångbehov med ett förnybart energisystem.
Andre, Michael Sean [Verfasser], Kai-Uwe [Akademischer Betreuer] Bletzinger, Riccardo [Gutachter] Rossi, Rainald [Gutachter] Löhner, and Kai-Uwe [Gutachter] Bletzinger. "Aeroelastic Modeling and Simulation for the Assessment of Wind Effects on a Parabolic Trough Solar Collector / Michael Sean Andre ; Gutachter: Riccardo Rossi, Rainald Löhner, Kai-Uwe Bletzinger ; Betreuer: Kai-Uwe Bletzinger." München : Universitätsbibliothek der TU München, 2018. http://d-nb.info/1161528733/34.
Повний текст джерелаVasquez, Padilla Ricardo. "Simplified Methodology for Designing Parabolic Trough Solar Power Plants." Scholar Commons, 2011. http://scholarcommons.usf.edu/etd/3390.
Повний текст джерелаSkouras, George N. "Design and Analysis of a Parabolic Trough Solar Concentrator." DigitalCommons@CalPoly, 2018. https://digitalcommons.calpoly.edu/theses/1915.
Повний текст джерелаMeiser, Siw [Verfasser]. "Analysis of parabolic trough concentrator mirror shape accuracy in laboratory and collector / Siw Meiser." Aachen : Hochschulbibliothek der Rheinisch-Westfälischen Technischen Hochschule Aachen, 2014. http://d-nb.info/1052217427/34.
Повний текст джерелаAmba, Harsha Vardhan. "Operation and Monitoring of Parabolic Trough Concentrated Solar Power Plant." Scholar Commons, 2015. http://scholarcommons.usf.edu/etd/5891.
Повний текст джерелаAlsharkawi, Adham. "Automatic control of a parabolic trough solar thermal power plant." Thesis, University of Sheffield, 2017. http://etheses.whiterose.ac.uk/17890/.
Повний текст джерелаAbiose, Kabir. "Improving the concentrated solar power plant through connecting the modular parabolic solar trough." Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/105718.
Повний текст джерелаCataloged from PDF version of thesis.
Concentrating solar power (CSP) stands as a promising renewable energy technology with the ability to contribute towards global reduction of carbon emissions. A major obstacle to increased adoption of CSP plants has to do with their high initial investment cost; consequently, there is a powerful desire to find improvements that decrease the initial capital investment for a CSP plant. One such improvement involves connecting modularized parabolic trough segments, each with the same dimensions, decreasing the overall amount of actuators required along with greatly simplifying system control architecture. This thesis is concerned with the extent to which parabolic solar trough modules can be connected together while still being able to operate to desired accuracy under expected load. Accuracy requirements are calculated, along with expected loads resulting in frictional torque on the trough. These expected loads are combined with a model for the effect of connecting multiple trough modules to generate a relationship between number of chained modules and required torsional stiffness. To verify said model, an experimental setup was designed and constructed to simulate loads due to both trough weight and wind loads.
by Kabir Abiose.
S.B.
O'Rourke, Conor R. (Conor Rakis). "Mechanical development of the actuation system of a parabolic solar trough." Thesis, Massachusetts Institute of Technology, 2011. http://hdl.handle.net/1721.1/68906.
Повний текст джерелаCataloged from PDF version of thesis.
Includes bibliographical references (p. 47).
This thesis documents my personal contribution to the engineering and design of an actuation system with the purpose of rotating a parabolic solar trough to track the sun throughout the day. The primary focus of the design was to create a robust system with minimal cost while meeting a number of functional requirements. After considering a number of possible designs and conducting an in-depth analysis into two of them, the final design chosen was a slider crank mechanism that rotates the trough about its focus. This mechanism uses a lead screw to drive the base of two passively extensible arms in a lateral direction and translates that force into a rotational motion. Whichever arm is in compression actuates the trough. One of these bases is driven by the lead screw while the other is fixed a distance away using a rigid connection. The model for this system was optimized for cost and design simplicity resulting in the selection and purchase of parts for a full scale prototype at a site in New Hampshire using one 4ft lead screw and a 0.16 horsepower motor to drive each end of the trough.
by Conor R. O'Rourke.
S.B.
Koniski, Cyril (Cyril A. ). "Error analysis of motion transmission mechanisms : design of a parabolic solar trough." Thesis, Massachusetts Institute of Technology, 2009. http://hdl.handle.net/1721.1/54497.
Повний текст джерелаPage 47 blank. Cataloged from PDF version of thesis.
Includes bibliographical references (p. 42).
This thesis presents the error analysis pertaining to the design of an innovative solar trough for use in solar thermal energy generation fields. The research was a collaborative effort between Stacy Figueredo from Prof. Alexander Slocum's Precision Engineering Research Group at MIT and a team of students from the 2.752 Mechanical Engineering course and resulted in a final design that uses two linear actuators to rotate a monolithic parabolic trough over a 2600 range. A measure of efficiency, based on the geometric tracing of incident and reflected rays under different parabola deformations, was developed and used to determine the impact of several key parameters on the accuracy of the system. The resulting error analysis demonstrated the substantial influence of the crank arm length and actuator precision on the overall system efficiency and set an upper bound of 1 degree in permissible angular error in order to maintain 80% efficiency under sustained wind loading.
by Cyril Koniski.
S.B.
Kariuki, Kibaara Samuel. "Technical and economic analysis of parabolic trough concentrating solar thermal power plant." Master's thesis, University of Cape Town, 2012. http://hdl.handle.net/11427/11929.
Повний текст джерелаIncludes bibliographical references.
This thesis reports on the technical and economic analysis of wet and dry cooling technologies of parabolic trough CSTP plant. This was done through modelling and simulation of a standalone and grid connected parabolic trough using the System Advisor Model (SAM).
Khonkar, Hussam. "A novel design of a compound parabolic concentrator with dual-cavity." Thesis, University of Reading, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.363842.
Повний текст джерелаVahland, Sören. "Analysis of Parabolic Trough Solar Energy Integration into Different Geothermal Power Generation Concepts." Thesis, KTH, Kraft- och värmeteknologi, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-129093.
Повний текст джерелаPopović, Katarina S. B. Massachusetts Institute of Technology. "Design and analysis of hydraulically driven actuation system For a parabolic solar trough." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/83737.
Повний текст джерелаCataloged from PDF version of thesis.
Includes bibliographical references (page 34).
This thesis documents Katarina Popovic's contribution to the design of hydraulic cylinder actuation system for day to day solar trough sun tracking, a semester long project within 2.752 Development of Mechanical Products class. The primary goal of this project was to design a robust mechanical system while reducing the complexity and thus overall cost of the solar trough assembly for the production line. The mechanism suggested in this thesis actuates both sides of the solar trough simultaneously, as well as exploit hydraulic cylinder's full range stroke in order to deliver +/-110° rotational requirement. The rotational motion is achieved through a pulley and a wire rope system, actuated by a single, double action double rod cylinder. As this project funding was received from our sole sponsor, an Italian multinational energy company, during the design process the ultimate goal of eventual production line was kept in mind. However slight design modifications have been made in order to install and test the actuation system on the already existing 4m solar trough prototype on site in Pittsfield, New Hampshire.
by Katarina Popović.
S.B.
Bouvier, Jean-Louis. "Étude expérimentale d'une installation de micro-cogénération solaire couplant un concentrateur cylindro-parabolique et un moteur à cycle de Hirn." Thesis, La Rochelle, 2014. http://www.theses.fr/2014LAROS031/document.
Повний текст джерелаThe objective of this thesis is the experimental study of the energy performances of a micro combined solar heat and power (micro-CHP) unit. The prototype is composed of a solar parabolic trough collector coupled to a Hirn (superheated Rankine) cycle engine. The originalities of this project are the use of solar energy which is renewable and inexhaustible but intermittent, the direct steam generation with a reduced size parabolic trough collector (46.5 m²), the two axis tracking system and the coupling with an oil-free reciprocating steam engine. The first part of this study is focussed on the solar collector. Thermal performances under sunny and cloudy conditions are presented and the thermal efficiency is evaluated. The system dynamic is also investigated through the characterization of the inertia as well as a study of its response to perturbations. Then a control strategy is set up and validated. The second part deals with the characterization of the engine. Tests have been performed with a stable and variable heat source power. From these tests, an empirical model has been developed and used in a parametrical study. This study shows the significant influence of the pressure ratio and of the rotational speed on the efficiency of the engine. In the last part, global performances (efficiency, output thermal and electrical powers) of the entire micro-CHP unit are evaluated. Tests with controlled pressure and speed are presented. From operating maps established from an empirical model, a control strategy based on the use of a by-pass is set up and tested
Temlett, Robert. "Dynamic process modelling of the HPS2 solar thermal molten salt parabolic trough test facility." Master's thesis, Faculty of Engineering and the Built Environment, 2018. http://hdl.handle.net/11427/29990.
Повний текст джерелаMuhammad, Mubarak Danladi. "Development of a cascaded latent heat storage system for parabolic trough solar thermal power generation." Thesis, Cranfield University, 2014. http://dspace.lib.cranfield.ac.uk/handle/1826/9303.
Повний текст джерелаParvareh, Forough. "Solar Repowering of PCC-retrofitted Power Plants." Thesis, The University of Sydney, 2015. http://hdl.handle.net/2123/15473.
Повний текст джерелаSingh, Harjit. "An experimental study of natural convective heat flow phenomena in concentrating compound parabolic solar collector cavities." Thesis, University of Ulster, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.516521.
Повний текст джерелаŠumić, Mersiha. "Thermal Performance of a Solarus CPC-Thermal Collector." Thesis, Högskolan Dalarna, Energi och miljöteknik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:du-14526.
Повний текст джерелаPernpeintner, Johannes [Verfasser], Robert [Akademischer Betreuer] Pitz-Paal, and Stephan [Akademischer Betreuer] Kabelac. "Optical efficiency measurement of receivers for parabolic trough solar thermal power plants in solar simulators / Johannes Pernpeintner ; Robert Pitz-Paal, Stephan Kabelac." Aachen : Universitätsbibliothek der RWTH Aachen, 2018. http://d-nb.info/1191375315/34.
Повний текст джерелаPrahl, Philipp Christoph [Verfasser], Robert [Akademischer Betreuer] Pitz-Paal, and Hans-Gerd [Akademischer Betreuer] Maas. "Photogrammetric measurement of the optical performance of parabolic trough solar fields / Philipp Christoph Prahl ; Robert Pitz-Paal, Hans-Gerd Maas." Aachen : Universitätsbibliothek der RWTH Aachen, 2019. http://d-nb.info/121604094X/34.
Повний текст джерелаNouri, Bijan [Verfasser], Robert [Akademischer Betreuer] Pitz-Paal, and Andreas [Akademischer Betreuer] Kazantzidis. "Solar irradiance nowcasting system to optimize the yield in parabolic trough power plants / Bijan Nouri ; Robert Pitz-Paal, Andreas Kazantzidis." Aachen : Universitätsbibliothek der RWTH Aachen, 2020. http://d-nb.info/1217416188/34.
Повний текст джерелаContino, Alessandro Patrizio. "Solar mirrors characterization for concentrating solar power technology." Doctoral thesis, Università di Catania, 2012. http://hdl.handle.net/10761/993.
Повний текст джерелаSchneider, 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.
Повний текст джерелаD\'Avila, Alexandre Coelho da Silva. "Degradação do pesticida amicarbazona em meio aquoso pelo processo TiO2/UV irradiado por luz solar." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/3/3137/tde-03072013-105850/.
Повний текст джерелаAdvanced oxidative processes (AOP) have been considered as an efficient alternative for the degradation of recalcitrant pollutants. Photocatalysis using solar radiation has been studied for the treatment of wastewaters containing pesticides. In this work, the degradation of the herbicide amicarbazone (AMZ) by the TiO2/UV process was studied in a reactor equipped with compound parabolic collectors irradiated by solar light. The experiments were carried out according to a Doehlert matrix to study the effects AMZ initial concentration (20-100 mg L-1), catalyst concentration (0.1-1 g L-1), and number of tubes exposed to solar light (1-9). Samples were analyzed for AMZ and total organic carbon (TOC) concentrations. Radiometric measurements indicated that UVB-UVA radiation corresponded in average to about 4% of the solar radiation between 310-2800 nm; ferrioxalate actinometry resulted in an average photonic flux of 3.58×10-5 mol fótons m-2 s-1 for typical sunny days. The TiO2/UV process showed to be efficient for the degradation of the pesticide, which was completely removed before 45 minutes of treatment, for the following conditions: [AMZ]0=21.3 mg L-1; [TiO2]=0.5 g L-1; and 7 tubes. However, in this case only ca. 24% of mineralization was achieved, and in most cases TOC values remained practically constant, indicating the formation of recalcitrant by-products whose toxicity and biodegradility should be characterized. Statistical analysis of the results confirmed important effects of pesticide initial concentration and number of tubes exposed (irradiated volume), whose increase enables to compensate the lower incidence of solar radiation. Some experimental results suggested that AMZ degradation was favored by higher TiO2 concentrations. In most cases the values of ACM were lower than 50 m2 kg-1, in such a way that this parameter is interesting for scale-up of solar irradiated photocalytic processes used in the treatment of amicarbazone-containing wastewaters.
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.
Повний текст джерелаLike 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)
Salvestroni, Michele. "Development of a small-size parabolic trough collector: design and experimental test." Doctoral thesis, 2019. http://hdl.handle.net/2158/1221900.
Повний текст джерелаPRATESI, STEFANO. "Sviluppo di un coating per assorbitore solare con tecnologie low cost." Doctoral thesis, 2015. http://hdl.handle.net/2158/1015547.
Повний текст джерелаBannur, Suhas. "Design and Development of a Novel Solar Thermal Receiver." Thesis, 2016. http://etd.iisc.ac.in/handle/2005/4291.
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