Global ETD Search
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 11 of 11 for “"Trough Collectors"”.
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The potential of solar process heat for South Africa industry
… support conventional heating methods. Parabolic trough collectors are the most mature technology for both power and process heat, or steam generation. Linear Fresnel collectors could become an attractive alternative in terms of cost in the not too distant future.
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Imagem e concentração em coletores solares cilíndrico-parabólicos
The potential utilization of parabolic trough collectors for the production of industrial process and domestic uses is largely expected. Nowadays a big effort in terms of research and development must be done to be achieved an optimun design for this equipament. Utilising the ray tracing method and …
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Nanofluids with optimised thermal properties based on metal chalcogenides with different morphology
… fluid used in the absorber tube of parabolic trough collectors with nano-colloidal suspensions of nanomaterials in a base fluid, typically named nanofluids. Nanofluids are considered as a new generation of heat transfer fluids since they exhibit thermophysical properties improvements compared …
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Development of 2d metallic nanomaterials for nanofluids with application in concentrating solar power
… heat transfer fluid flowing through solar collectors. The use of nanofluids as has been proposed to improve this conversion. This thesis aims to provide knowledge and understanding of the Physical Chemistry of nanofluids, with particular attention to features and processes that determine …
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Parabolic trough solar collectors : design for increasing efficiency
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 …
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Analysis of parabolic through collector cleaning system under adaptive scheduling policy
… events on the cleaning schedule of the parabolic trough collectors that are used to generate power at concentrated solar power (CSP) plants. The level of cleanliness is proportional to the power produced, and thus it affects the economic pay off at CSP plants. Current practice to address this dust …
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Mechanical design, control and optimization of a hybrid solar microgrid for rural electrification and heat supply in sub-Saharan Africa
… The considered system includes PV, Parabolic Trough Collectors, Organic Rankine Cycle and LPG generator, as well as chemical battery storage and thermal energy storage. The work focuses on multiple aspects of the ongoing development of solar hybrid microgrids for the rural electrification of …
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Sistemas de generación eléctrica mediante calderas de vapor energizadas por radiación solar concentrada
… fields in United States covered with parabolic-trough collectors in the south-west desserts, each one with different technological foundations (optical physics applied, configurations, heat transfer fluids…). The new system described in this thesis for solar thermal concentration development is …
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Optimisation of collector locations and pipe networks for dish–Rankine power plants
… of the chosen collector. Paraboloidal dish collectors are realisations of the ideal reflective imaging concentrator geometry, and offer the highest possible optical efficiency of all collector geometries. The feasibility of multi-megawatt scale dish–Rankine power plants incorporating Big …
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Optimisation of collector locations and pipe networks for dish–Rankine power plants
… of the chosen collector. Paraboloidal dish collectors are realisations of the ideal reflective imaging concentrator geometry, and offer the highest possible optical efficiency of all collector geometries. The feasibility of multi-megawatt scale dish–Rankine power plants incorporating Big …
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Análisis y propuestas de sistemas solares de alta exergía que emplean agua como fluido calorífero
… to Direct Steam Generation (DSG) in parabolic trough collectors, as an alternative to electricity production by means of Solar Concentrating Technologies. This study has been carried out following two main points: the thermofluidynamic model of direct steam generation in parabolic trough …