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dc.contributor.authorThompson, Megan Elizabeth Doveen_US
dc.date.accessioned2013-02-19T22:39:27Z
dc.date.available2013-02-19T22:39:27Z
dc.date.issued2013-01-07en_US
dc.identifier.othervt_gsexam:68en_US
dc.identifier.urihttp://hdl.handle.net/10919/19233
dc.description.abstractThermoelectric generators (TEGs) are currently a topic of interest in the field of energy harvesting for automobiles. In applying TEGs to the outside of the exhaust tailpipe of a vehicle, the difference in temperature between the hot exhaust gases and the automobile coolant can be used to generate a small amount of electrical power to be used in the vehicle. The amount of power is anticipated to be a few hundred watts based on the temperatures expected and the properties of the materials for the TEG.
This study focuses on developing efficient heat exchanger modules for the cold side of the TEG through the analysis of experimental data. The experimental set up mimics conditions that were previously used in a computational fluid dynamics (CFD) model. This model tested several different geometries of cold side sections for the heat exchanger at standard coolant and exhaust temperatures for a typical car. The test section uses the same temperatures as the CFD model, but the geometry is a 1/5th scaled down model compared to an full-size engine and was fabricated using a metal-based rapid prototyping process. The temperatures from the CFD model are validated through thermocouple measurements, which provide the distribution of the temperatures across the TEG. All of these measurements are compared to the CFD model for trends and temperatures to ensure that the model is accurate. Two cold side geometries, a baseline geometry and an impingement geometry, are compared to determine which will produce the greater temperature gradient across the TEG.
en_US
dc.format.mediumETDen_US
dc.publisherVirginia Techen_US
dc.rightsThis Item is protected by copyright and/or related rights. Some uses of this Item may be deemed fair and permitted by law even without permission from the rights holder(s), or the rights holder(s) may have licensed the work for use under certain conditions. For other uses you need to obtain permission from the rights holder(s).en_US
dc.subjectThermoelectric Generationen_US
dc.subjectThermoelectricsen_US
dc.subjectAutomobileen_US
dc.subjectTest Standen_US
dc.subjectHeat Transferen_US
dc.subjectTEGen_US
dc.subjectTemperature Gradienten_US
dc.titleFabrication and Testing of a Heat Exchanger Module for Thermoelectric Power Generation in an Automobile Exhaust Systemen_US
dc.typeThesisen_US
dc.contributor.departmentMechanical Engineeringen_US
dc.description.degreeMaster of Scienceen_US
thesis.degree.nameMaster of Scienceen_US
thesis.degree.levelmastersen_US
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen_US
thesis.degree.disciplineMechanical Engineeringen_US
dc.contributor.committeechairEkkad, Srinath V.en_US
dc.contributor.committeememberPriya, Shashanken_US
dc.contributor.committeememberHuxtable, Scott T.en_US


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