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dc.contributor.advisorTompson, R. V. (Robert Vaughn), 1958-eng
dc.contributor.advisorLoyalka, S. K.eng
dc.contributor.advisorGhosh, Tushar K.,eng
dc.contributor.authorWalton, Kyle L.eng
dc.date.issued2017eng
dc.date.submitted2017 Falleng
dc.descriptionField of study: Nuclear engineering.eng
dc.descriptionDr. Robert V. Tompson, Jr. Dissertation Supervisor; Dr. Sudarshan K. Loyalka Dissertation Co-Supervisor; Dr. Tushar K. Ghosh Dissertation Co-Supervisor.eng
dc.descriptionIncludes vita.eng
dc.description"December 2017."eng
dc.description.abstractDetermining the accuracy and uncertainty in total hemispherical emissivity data is important in the uncertainty quantification of predictive models using radiant heat transfer. Very High Temperatures Reactors (VHTR) are intended to passively remove decay from fission products by the emissive power of the structural materials and ultimately the reactor pressure vessel into the surroundings. By removing this decay heat, the reactor and its fuel will remain intact. Total hemispherical emissivity data must be obtained for specific materials with specific surface conditions. The goal of this dissertation is to determine the uncertainty on previously experimental data on the emissivity of VHTR materials using a calorimetric emissometer constructed according to ASTM C835-06. An additional purpose is to provide a model for which the uncertainty in other ASTM C835-06 designs, or similar calorimetric emissometers, can be evaluated. This is achieved by using an uncertainty analysis described by the JCGM 100:2008: Evaluation of measurement data -- Guide to the expression to the uncertainty in measurement, or GUM. A thorough examination of the calorimeter design and experimental procedure is given to identify and characterize errors in the measurement of raw data and calculation of total hemispherical emissivity. Uncertainty is reported for select cases to demonstrate the minimum and maximum values.eng
dc.description.bibrefIncludes bibliographical references (pages 80-85).eng
dc.format.extent1 online resource (x, 86 pages) : illustrations (some color)eng
dc.identifier.merlinb129183726eng
dc.identifier.oclc1098293291eng
dc.identifier.urihttps://hdl.handle.net/10355/66768
dc.languageEnglisheng
dc.publisherUniversity of Missouri--Columbiaeng
dc.relation.ispartofcollectionUniversity of Missouri--Columbia. Graduate School. Theses and Dissertationseng
dc.rightsOpenAccesseng
dc.rights.licenseThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 License.eng
dc.titleUncertainty analysis of steady-state calorimetric emissivity measurementseng
dc.typeThesiseng
thesis.degree.disciplineNuclear engineering (MU)eng
thesis.degree.grantor[University of Missouri--Columbia]eng
thesis.degree.levelDoctoraleng
thesis.degree.namePh. D.eng


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