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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 31 for “"Solar Concentrator"”.
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Design of inflatable solar concentrator
Solar concentrators improve the performance of solar collection systems by increasing the amount of usable energy available for a given collector size. Unfortunately, they are not known for their light weight and portability, which is ideal for basic applications like solar cooking. The goal of the …
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Analysis and Optimization of the Scheffler Solar Concentrator
<p>The Scheffler reflector is a new solar concentrator design which maintains a fixed focus while only having a single axis tracking mechanism. This design makes the construction and operation of high temperature solar concentrators accessible to developing nations. In this project, I wrote …
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Design and Analysis of a Parabolic Trough Solar Concentrator
<p>A prototype solar desalination system (SODESAL) with a parabolic-trough solar concentrator (PTSC) and evacuated tube was designed and analyzed to determine the solar thermal capabilities for small-scale distillation and energy generation. A proof-of-concept study verified that distillation is …
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Design of a compact, lightweight, and low-cost solar concentrator
… to improve the current design of large and heavy solar concentrators. The three main design goals were: making the system compact, making the system lightweight, and minimizing expenses. The main approach to achieving these design parameters was to use the plastic film Mylar in its aluminized form …
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Luminescent solar concentrator structures for solar energy harvesting and radiation control
Luminescent solar concentrators are devices capable of converting some spectral components of solar radiation by luminescence and concentrating them before collection by photovoltaic. The aim of this thesis is to design, develop and demonstrate the principle of all-inorganic semitransparent …
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High efficiency luminescent solar concentrator with interconnected gallium indium phosphide micro solar cells
… its theoretical limit, multi-junction (MJ) and concentrator photovoltaics (CPV) technology may open up new possibilities for further improvements. MJ technology improves efficiency by decreasing losses due to the mismatch between the energy of incident photons and the bandgap of semiconductors. …
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Development of Solar Sensitive Thin Film for Water Splitting and Water Heating using Solar Concentrator
Photocatalytic water splitting using solar energy could contribute to the solution of environmental and energy issues related to the hydrogen production. Key research area in this field is the development of photo-catalyst able to provide high energy conversion efficiency. TiO2 has been mostly …
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Fabrication of a luminescent solar concentrator that minimizes self-absorption losses using inter-chromophore energy transfer
… power during this century is immense. Solar power offers the largest resource base to supply this need, but in light of recent silicon shortages, it is an open question whether silicon photovoltaics can keep pace with demand. The development of economical concentrators could relieve …
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Validation of a numerical model for the analysis of thermal-fluid behavior in a solar concentrator vessel
… project is an attempt to design a more simple solar thermal energy generation system that additionally addresses the intermittence issue. The CSPond system calls for a large container in which special salt mixtures are molten by solar thermal energy. The large container also acts as a thermal …
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Chromium (III), Titanium (III), and Vanadium (IV) sensitization of rare earth complexes for luminescent solar concentrator applications
… system can be achieved with a luminescent solar concentrator (LSC). Neodymium (Nd) and ytterbium (Yb) are excellent infrared LSC materials: inexpensive, abundant, efficient, and spectrally well-matched to high-performance silicon solar cells. These rare earth ions are reasonably transparent …
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Some modifications to the design of a parabolic solar concentrator for construction in Lesotho and their effects on power production
… and power production in an existing parabolic solar concentrator. The proposed modifications included limiting the number of parabolic ribs to be constructed to two, using struts of slotted angle iron to approximate a continuous parabolic trough, and increasing the thickness of the mirrored …
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Ultra thin micro solar cells with concentration optics: fabrication, modeling and characterization
… material with relatively cheaper optics, a solar concentrator, and reduce the size of the active photovoltaic cells. The bulkiness of a conventional solar concentrator becomes pricy and impractical for certain applications. A micro solar cell array module was thus developed to overcome these …
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New Vistas in Solar Concentration with Gradient Index Optics
… innovations in the fields of optical design and solar concentration are presented: a) the derivation of fundamentally new gradient-index (GRIN) distributions for perfect optical instruments. For the first time, GRIN lenses for visible and solar radiation with refractive index distributions that …
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Luminescent organic materials and their application in solar technologies
… from organic materials and the luminescent solar concentrator (LSC). In Chapter 2, we describe the red phosphorescence from a class of four structurally simple benzo[2,1,3]thiadiazoles in cyclohexane. The photophysical properties of these molecules are presented along with a computational …
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A Showcase of Functional Fluorous Materials and Their Applications
… to realize the concept of a fluorofluorescent solar concentrator. In Chapter 3, we report the synthesis and photophysical properties of fluorous phthalocyanines and subphthalocyanines. We then explored these molecules’ Faraday rotation properties in organic and fluorous solvents. In Chapter 4, …
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Exploring the Concept of a Deep Space Solar-Powered Small Spacecraft
… modest payload requirements to study the outer Solar System (OSS) with the capabilities of low-power nano-satellites may enable much more affordable access to deep space. This paper explores a design concept for a low-cost, small spacecraft, designed to study the OSS and satisfy mission …
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Modeling of Bragg reflectors to increase performance of high efficiency III-V multijunction solar cells
High efficiency III-V solar cells are important for solar concentrator systems and space applications. To increase the efficiency of these cells, creative methods have been employed such as adding quantum wells in stress-balanced superlatticies to get closer to the ideal bandgaps for three junction …
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Polymer based microscale and nanoscale technologies for optical and biomedical application
… wide acceptance angle thin and flat miniaturized solar concentrator by mimicking the wide acceptance angle found in compound eye of insects. I integrated lens, conic spacer and light guide to concentrate and redirect sunlight into small area where PV cell can be installed. My design can have total …
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Fabrication and light management of microscale solar cells
… the fabrication of second-generation silicon solar microcells, with enhanced processing robustness and energy conversion efficiency by utilizing a thermally grown SiO2 material, which serves as both an etching/doping mask and a passivation/anti-reflection layer. Combined with a …
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Solar thermoelectrics for small scale power generation
… is there. Through this work, we show that the solar thermoelectric generators (STEGs) using cheap parabolic concentrators with high ZT modules can be a viable and a costeffective alternative to solar photovoltaics for distributed power generation. The maximum conversion efficiency of 3% has …
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