Overall Heat Transfer Coefficients and Axial Temperature Distribution of Fluids in a Triple Tube Heat Exchanger

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dc.contributor.advisor Andrey V. Kuznetsov, Committee Member en_US
dc.contributor.advisor Brian E. Farkas, Committee Member en_US
dc.contributor.advisor K.P. Sandeep, Committee Chair en_US
dc.contributor.author Batmaz, Ediz en_US
dc.date.accessioned 2010-04-02T18:16:42Z
dc.date.available 2010-04-02T18:16:42Z
dc.date.issued 2003-11-06 en_US
dc.identifier.other etd-11062003-123823 en_US
dc.identifier.uri http://www.lib.ncsu.edu/resolver/1840.16/2707
dc.description.abstract Computation of overall heat transfer coefficients in a triple tube heat exchanger (TTHE) is complicated when compared to a double tube heat exchanger (DTHE) since the two overall heat transfer coefficients are not independent of each other and must be solved for simultaneously. Previous methods established towards calculation of these parameters either include assumptions that are not valid for all flow conditions and fluid flow rates or use empirical correlations which may cause significant deviations from actual values of these parameters. A more generic technique was developed for calculation of overall heat transfer coefficients and axial temperature distribution of fluids in a triple tube heat exchanger. The developed procedure has been used for calculation of these parameters at various fluid flow rates and product inlet temperatures. Theoretical double tube heat exchanger results were also tabulated for comparison purposes. The advantages of using a TTHE over a DTHE has been both conceptually explained and demonstrated using the results obtained. However, it was also shown that design of TTHE experiments is critical, especially in the co-current flow arrangement, since the relative flow rates of the fluids may result in a decrease in the effectiveness. The effect of fluid flow rates, product inlet temperature, and flow arrangement on values of overall heat transfer coefficients, total amount of heat transferred, and effectiveness were also investigated. These results were analyzed using SAS and interpreted for the consistency of the obtained results with the literature. en_US
dc.rights I hereby certify that, if appropriate, I have obtained and attached hereto a written permission statement from the owner(s) of each third party copyrighted matter to be included in my thesis, dissertation, or project report, allowing distribution as specified below. I certify that the version I submitted is the same as that approved by my advisory committee. I hereby grant to NC State University or its agents the non-exclusive license to archive and make accessible, under the conditions specified below, my thesis, dissertation, or project report in whole or in part in all forms of media, now or hereafter known. I retain all other ownership rights to the copyright of the thesis, dissertation or project report. I also retain the right to use in future works (such as articles or books) all or part of this thesis, dissertation, or project report. en_US
dc.subject mathematical modeling en_US
dc.subject axial temperature distribution en_US
dc.subject overall heat transfer coefficient en_US
dc.subject triple tube heat exchanger en_US
dc.title Overall Heat Transfer Coefficients and Axial Temperature Distribution of Fluids in a Triple Tube Heat Exchanger en_US
dc.degree.name MS en_US
dc.degree.level thesis en_US
dc.degree.discipline Food Science en_US


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