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 20 of 507 for “"collector"”.
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place for a line collector
this work seeks specificity in an effort to design conditions that inspire architectural experiences of vastness. it does so by manifesting artifacts that engage curiosities of scale, anticipations of a rigorously nested architecture. ultimately, it proposes a trail, a mound, and a structure …
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An automatic traffic cones dispenser and collector system
This project report is about to develop an automatic system for dispense and collect the traffic cones by using manipulator which is robot arm. The development of the robot arm which is five degree of freedom is the most important part in this project in order to make this system become an …
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Modeling and Experimental Investigation of Parabolic Trough Solar Collector
… the performance of a parabolic trough solar collector (PTSC). The proposed model consists of three parts. The first part is a solar radiation model. In this section, the amount of solar radiation incident upon Earth is estimated using equations and relationships between the sun and the Earth. …
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Hydrogen surface wave plasma cleaning of the EUV collector
… in the EUV source on the main optic (called the collector), reducing reflectivity and thus lowering power during operation. The tool must then be taken down to clean the collector outside of the vessel, introducing downtime and loss of profits. This work investigates a surface wave plasma-based …
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Analysis and design of a cylindrical parabolic solar collector
A cylindrical-parabolic solar collector was thermally optimized for a winter season using a weather model and an extension of the present state-of-the-art collector theory. An accurate model for the cover transmittance and a seasonal performance model was developed. The optimum collector dimensions …
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Analysis of flat-plate solar collector durability test data
… types of commercially available flat plate solar collectors. The test results for five types of collectors are analyzed. The purpose of the test program was to investigate the feasibility of determining the durability of materials by measuring collector thermal efficiency at specified intervals. …
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Optimizing heat transfer in a solar parabolic trough collector absorber
… thermal performance of solar parabolic trough collector (SPTC) systems that are specifically tailored to Thailand’s unique climatic and economic conditions. The study combines experimental and numerical methodologies to evaluate innovative designs for solar absorber tubes through Computational …
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Analysis of Garbage Collector Algorithms in Non-Volatile Memory Devices
… place. This necessitates the need for a garbage collector (GC) that can collect active data and create space by erasing flash blocks. However this is a very costly operation that increases the write latency thereby lowering the efficiency of the flash device. The frequency at which the GC is …
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A Rhodium Centered Supramolecular Complex as a Photoinitiated Electron Collector
… (BL), and a central rhodium(III) electron collector (EC). Ruthenium-polyazine light absorbers are commonly used in light to energy conversion systems due to the intense metal to ligand charge transfer (MLCT) absorptions observed in the visible spectrum. Electrochemical methods establish …
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Analysis of parabolic through collector cleaning system under adaptive scheduling policy
… 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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Strengthening the Settings for Inland Revenue’s Statutory Role as Tax Collector
… the settings for IR’s statutory role as tax collector. The research contends that the statutory settings are not appropriate to support IR in this role and a number of recommendations for legislative change are made. This thesis also makes a number of recommendations as to how IR can revise …
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A Dynamic Crossed-Field Photomultiplier With an Electron Bombarded Semiconductor Collector
Made available in DSpace on 2014-12-12T20:54:57Z (GMT). No. of bitstreams: 1 7913650.pdf: 2561244 bytes, checksum: e0ac0d89fd85a7e824b7042f051c4759 (MD5) Previous issue date: 1978
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The impact of thermophysical properties on nanofluid-based solar collector performance
Nanofluids are a novel class of heat transfer fluids in which nanoparticles are dispersed in traditional heat transfer fluids. They offer enhanced thermophysical, rheological and radiative properties. These enhancements have resulted in recent research being centred on the application of nanofluids …
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Modeling a solar energy collector with an integrated phase-change material
In this thesis, a finite-element computer model was created to simulate a solar air heater with an integrated-phase change material. The commercially available finite element package ADINA-Fluid was used to generate the model that captures the fundamental physical processes which are necessary in …
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Solar thermal collector system modeling and testing for novel solar cooker
… 1.2 was 0.60 m² for and 0.65 m² for the proposed collector without and with glazing, respectively. A recommendation of collection area 1 m² was proposed to account for unexpected losses due to manufacturing errors, positioning errors, and environmental variation. This thesis also analyzed a …
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Performance optimization of a subsonic Diffuser-Collector subsystem using interchangeable geometries
… and built to test and optimize various diffuser-collector box geometries at the one-twelfth scale. The facility was designed to run continuously at an inlet Mach number of 0.42 and an inlet hydraulic diameter Reynolds number of 340,000. Different combinations of diffusers, hubs, and exhaust …
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Stagnation temperature test methods for determining solar collector thermal performance degradation
… of materials used in flat-plate solar collectors. The proposed method is based on measuring stagnation (no-flow) temperatures of the absorber plate. A comparison of the advantages and limitations of the proposed method is made with the conventionally used existing method which is based …
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The effects of material property changes on solar collector thermal performance
… relating material property changes to full scale collector efficiency changes after exposure to environmental and operational conditions. To this end, results of material sample and full scale collector tests are discussed separately and then related to each other. Many of the materials tested …
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Development of separation methods and measurement protocols for Sr and Pb isotopic analysis of archaeological artefacts by means of single-collector and multi-collector ICP-mass spectrometry
… the isotopic composition of Sr and Pb via single-collector ICP-MS (equipped with one detector) and multi-collector ICP-MS (equipped with an array of detectors). The analytical strategy developed was subsequently applied to three archaeological projects. A first project made use of lead isotopic …
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