Silver–water nanofluid flow and convective heat transfer in a microfin tube equipped with loose-fit twisted tapes

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dc.contributor.authorSamruaisin, P.
dc.contributor.authorWongcharee, K.
dc.contributor.authorChuwattanakul, V.
dc.contributor.authorEiamsa-ard, S.
dc.date.accessioned2026-08-06T10:28:50Z
dc.date.available2026-08-06T10:28:50Z
dc.date.issued2020-06-01
dc.description.abstractHeat transfer enhancement and performance of compact heat exchangers have been extensively studied in the past century for the purpose of promoting energy efficiency. Microfin tubes in single/two/multiple-phase flow heat exchangers into which twisted tape swirl generators are installed can promote heat transfer with a moderate pressure loss penalty. This article reports on the enhanced heat transfer of silver–water nanofluids in a microfin tube into which loose-fit twisted tapes are installed in a counter-flow arrangement. The experiments were carried out using nanofluids with various silver concentrations (0.007–0.03 vol%), loose-fit twisted tapes with clearance ratios (c/D) of 0.0 (tight-fit), 0.05, 0.075 and 0.1, for a twist ratio, y/W, of 2.0. The results indicate that the heat transfer rate (Nu) and pressure drop (f) increase with a decrease in clearance ratio (c/D) and increase in silver (Ag) nanoparticle concentration. Additionally, the thermal performance factor tends to increase with the decrease in Reynolds numbers.
dc.identifier.citationJournal of Thermal Analysis and Calorimetry, 140(5), 2541-2554, 2020
dc.identifier.doi10.1007/s10973-019-08984-1
dc.identifier.issn13886150
dc.identifier.other2-s2.0-85075168792
dc.identifier.urihttps://dspace.kmitl.ac.th/handle/123456789/11021
dc.sourceJournal of Thermal Analysis and Calorimetry
dc.subjectFriction factor
dc.subjectHeat transfer
dc.subjectLoose-fit twisted tapes
dc.subjectMicrofin tube
dc.subjectSilver–water nanofluids
dc.subjectThermal performance
dc.titleSilver–water nanofluid flow and convective heat transfer in a microfin tube equipped with loose-fit twisted tapes
dc.typeArticle

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