Thermal characterization in a circular tube fitted with inclined horseshoe baffles
| dc.contributor.author | Promvonge, Pongjet | |
| dc.contributor.author | Tamna, Sombat | |
| dc.contributor.author | Pimsarn, Monsak | |
| dc.contributor.author | Thianpong, Chinaruk | |
| dc.date.accessioned | 2026-08-06T10:11:08Z | |
| dc.date.available | 2026-08-06T10:11:08Z | |
| dc.date.issued | 2015-01-22 | |
| dc.description.abstract | In the present study, the influence of inclined horseshoes baffles placed repeatedly in a tubular heat exchanger on heat transfer rate, friction factor and thermal enhancement factor are experimentally determined. The horseshoe baffle elements with an inclination angle of 20° were inserted periodically into the test tube at three different baffle-pitch ratios (P<inf>R</inf> = 0.5, 1.0 and 2) and -width or blockage ratios (B<inf>R</inf> = 0.1, 0.15 and 0.2). The experiment was conducted in the test tube having a uniform heat-fluxed wall by varying turbulent airflow to obtain Reynolds number in a range of 5300-24,000. The experimental results revealed that the tube fitted with inclined horseshoes baffles provides considerable improvement of the heat transfer rate over the plain tube around 92-208% while the friction factor is increased at about 1.76-6.37 times. To access the real benefits for the inclined horseshoes baffles inserted in plain tube, thermal performance factor is examined and found to be in the range of 1.34-1.92 at which the maximum obtained at P<inf>R</inf> = 0.5 and B<inf>R</inf> = 0.1 is considerably higher than that for published inserted devices. Correlations for Nusselt number and friction factor for the oblique horseshoe-baffled tube are also proposed. | |
| dc.identifier.citation | Applied Thermal Engineering, 75, 1147-1155, 2015 | |
| dc.identifier.doi | 10.1016/j.applthermaleng.2014.10.045 | |
| dc.identifier.issn | 13594311 | |
| dc.identifier.other | 2-s2.0-84921491173 | |
| dc.identifier.uri | https://dspace.kmitl.ac.th/handle/123456789/6132 | |
| dc.source | Applied Thermal Engineering | |
| dc.subject | Friction factor | |
| dc.subject | Heat transfer | |
| dc.subject | Horseshoe-baffle | |
| dc.subject | Thermal performance | |
| dc.subject | Vortex generator | |
| dc.title | Thermal characterization in a circular tube fitted with inclined horseshoe baffles | |
| dc.type | Article |