Numerical thermal performance study in a heat exchanger tube with inclined elliptical rings

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dc.contributor.authorSodsri, W.
dc.contributor.authorTamna, S.
dc.contributor.authorThianpong, C.
dc.contributor.authorPromvonge, P.
dc.date.accessioned2026-08-06T10:16:37Z
dc.date.available2026-08-06T10:16:37Z
dc.date.issued2017-06-01
dc.description.abstractThe paper deals with a numerical study on the effect of inclined elliptical ring (IER) on heat transfer augmentation in a uniform heat-fluxed heat exchanger tube. In the present work, the 60° IER was mounted repeatedly in the tube with six different eccentricity ratios (E<inf>R</inf> = b/a = 1, 0.9, 0.8, 0.7, 0.6 and 0.5) at a single ring-pitch ratio P<inf>R</inf> = 1.0. Air as the test fluid flows into the tube for Reynolds number ranging from 4000 to 20,000. To find the optimum thermal performance, the effect of E<inf>R</inf> values on the heat transfer and pressure loss is investigated. The study indicates that the use of IER can induce higher turbulent intensity imparted to the flow leading to higher heat transfer in range of about 237 to 461% above the smooth tube.
dc.identifier.citationIop Conference Series Earth and Environmental Science, 67(1), 2017
dc.identifier.doi10.1088/1755-1315/67/1/012035
dc.identifier.issn17551307
dc.identifier.other2-s2.0-85020917485
dc.identifier.urihttps://dspace.kmitl.ac.th/handle/123456789/7641
dc.sourceIop Conference Series Earth and Environmental Science
dc.titleNumerical thermal performance study in a heat exchanger tube with inclined elliptical rings
dc.typeConference Paper

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