{"data":{"id":"10.13016/m2w33w","type":"dois","attributes":{"doi":"10.13016/m2w33w","prefix":"10.13016","suffix":"m2w33w","identifiers":[],"alternateIdentifiers":[],"creators":[{"name":"Oles, Andrew","nameType":"Personal","givenName":"Andrew","familyName":"Oles","affiliation":[],"nameIdentifiers":[]}],"titles":[{"title":"Modeling of Falling-Particle Solar Receivers for Hydrogen Production and Thermochemical Energy Storage"}],"publisher":"Digital Repository at the University of Maryland","container":{},"publicationYear":2014,"subjects":[{"subject":"Mechanical engineering","subjectScheme":"pqcontrolled"},{"subject":"FOS: Mechanical engineering","schemeUri":"http://www.oecd.org/science/inno/38235147.pdf","subjectScheme":"Fields of Science and Technology (FOS)"},{"subject":"Alternative energy","subjectScheme":"pqcontrolled"},{"subject":"Simulation","subjectScheme":"pquncontrolled"},{"subject":"Solar Thermal","subjectScheme":"pquncontrolled"}],"contributors":[],"dates":[{"date":"2014","dateType":"Issued"}],"language":"en","types":{"ris":"THES","bibtex":"phdthesis","citeproc":"thesis","schemaOrg":"Thesis","resourceType":"Dissertation","resourceTypeGeneral":"Collection"},"relatedIdentifiers":[],"relatedItems":[],"sizes":[],"formats":[],"version":null,"rightsList":[],"descriptions":[{"description":"One of the most important components in a solar-thermal power plant is the central receiver where concentrated solar energy is absorbed in a medium for storage and eventual use in power generation or fuel production. Current state-of-the-art receivers are not appropriate for future power-plant designs due to limited operating temperatures. The solid-particle receiver (SPR) has been proposed as an alternative architecture that can achieve very high temperatures (above 1500 °C) with high efficiency, while avoiding many of the thermal stress issues that plague alternative architectures. The SPR works by having a flow of solid particles free-fall through a cavity receiver while directly illuminated to absorb the solar energy. Because of the high operating temperatures that can be achieved, along with the ability to continuously flow a stream of solid reactant, the SPR has the potential for use as a reactor for either chemical storage of solar energy or fuel production as part of a solar water-splitting cycle. While the operation of the SPR is relatively simple, analysis is complicated by the many physical phenomena in the receiver, including radiation-dominated heat transfer, couple gas-particle flow, and inter-phase species transport via reaction.\n\nThis work aims to demonstrate a set modeling tools for characterizing the operation of a solid particle receiver, as well as an analysis of the key operating parameters. A inert receiver model is developed using a semi-empirical gas-phase model and the surface-to-surface radiation model modified to account for interaction with the particle curtain. A detailed thermo-kinetic model is developed for undoped-ceria, a popular material for research into solar fuel production. The inert-receiver model is extended to integrate this kinetic model, and further used to evaluate the potential of perovskite materials to enhance the storage capability of the receiver. A modified undoped ceria model is derived and implemented via custom user functions in the context of a computational fluid dynamics simulation of the receiver using the discrete-ordinates method for radiation transfer. These modeling efforts provide a basis for in-depth analysis of the key operating parameters that influence the performance of the solid-particle receiver.","descriptionType":"Abstract"}],"geoLocations":[],"fundingReferences":[],"xml":"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","url":"http://hdl.handle.net/1903/16419","contentUrl":null,"metadataVersion":0,"schemaVersion":"http://datacite.org/schema/kernel-2.2","source":null,"isActive":true,"state":"findable","reason":null,"viewCount":0,"viewsOverTime":[],"downloadCount":0,"downloadsOverTime"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