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dc.contributor.advisorKirk, Daniel R.
dc.contributor.authorThirumalai Ananthanpillai, Aravindakshan
dc.date.accessioned2017-06-23T20:30:03Z
dc.date.available2017-06-23T20:30:03Z
dc.date.created2017-07
dc.date.issued2017-06
dc.date.submittedJuly 2017
dc.identifier.urihttp://hdl.handle.net/11141/1591
dc.descriptionThesis (M.S.) - Florida Institute of Technology, 2017en_US
dc.description.abstractCompact heat exchangers are desirable in many aerospace applications. New additive manufacturing approaches, such 3D printing, have enabled the fabrication of heat exchange devices utilizing geometries that cannot be fabricated using traditional approaches. The new geometries enabled by 3D printing may result in higher heat transfer using smaller devices, however, constraints associated with the fabrication of these devices also impose potential performance degradations. This document presents the design and analysis of a novel, compact counter flow heat exchanger which uses helically shaped passages to enhance the effectiveness of the heat transfer. Although the helical passages increase the heat transfer and reduce the size of the device, 3D print build constraints mandate that the passages are constructed with a lean angle for structural support that also increases the overall pressure loss of the fluid. An analytical model is developed, that can be used to trade the size and mass of the device for required heat transfer performance and acceptable levels of fluid pressure loss. Various working fluids, including water and cryogens are considered and designs that meet specified heat transfer goals while minimizing the pressure loss and volume of the device are presented. These designs are compared against a straight channel counter flow heat exchanger which can be fabricated using traditional approaches. This work demonstrates that for the same working fluids and for a set of given geometric constraints a tradeoff between heat exchange, pressure loss and compactness is observed while designing an optimized model.en_US
dc.format.mimetypeapplication/pdf
dc.language.isoen_USen_US
dc.rightsCC BY 4.0en_US
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/legalcodeen_US
dc.titleDesign of a Compact Helical Counterflow Heat Exchangeren_US
dc.typeThesisen_US
dc.date.updated2017-06-20T15:21:47Z
thesis.degree.nameMaster of Science In Aerospace Engineeringen_US
thesis.degree.levelMastersen_US
thesis.degree.disciplineAerospace Engineeringen_US
thesis.degree.departmentMechanical and Aerospace Engineeringen_US
thesis.degree.grantorFlorida Institute of Technologyen_US
dc.type.materialtext


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