Entropy generation and thermal performance of tubular heat exchanger fitted with louvered corner-curved V-baffles
| dc.contributor.author | Jayranaiwachira, Nuthvipa | |
| dc.contributor.author | Promvonge, Pongjet | |
| dc.contributor.author | Thianpong, Chinaruk | |
| dc.contributor.author | Skullong, Sompol | |
| dc.date.accessioned | 2026-08-06T10:40:57Z | |
| dc.date.available | 2026-08-06T10:40:57Z | |
| dc.date.issued | 2023-02-01 | |
| dc.description.abstract | The current article deals with an experimental study on entropy generation analysis and thermohydraulic performance of a uniform heat-flux tube equipped with louvered corner-curved baffle tape (LCBT). Air was drawn into the inserted tube for the Reynolds number (Re) between 4760 and 29,300. The V-shaped LCBT arranged by V-tip in downstream direction was introduced with three baffle pitch ratios (P<inf>R</inf> = 1–2) and six louver angles (θ = 0–90°) for a fixed attack angle (α) of 30° and baffle height ratio (B<inf>R</inf> = 0.25). The impacts of investigated parameters on the thermal enhancement factor (TEF), Nusselt number (Nu), friction factor (f), and total entropy generation (S˙<inf>gen</inf><sup>′</sup>) were examined. The measurements showed that the LCBT with the smallest values of P<inf>R</inf> = 1, θ = 0° give the largest Nu and f at about 4.4 and 19.2 times above the plain tube values, respectively. However, the greatest TEF around 2.23 was seen for employing the LCBT at P<inf>R</inf> = 1, θ = 45°. The entropy analysis also showed that the S˙<inf>gen</inf><sup>′</sup> is found to decline with the increment of P<inf>R</inf> and θ, whereas the minimal S˙<inf>gen</inf><sup>′</sup>is at P<inf>R</inf> = 1, θ = 0° for lower Re but at P<inf>R</inf> = 1, θ = 45° for higher Re. Furthermore, the Nu and f empirical correlations for employing LCBTs were also proposed. | |
| dc.identifier.citation | International Journal of Heat and Mass Transfer, 201, 2023 | |
| dc.identifier.doi | 10.1016/j.ijheatmasstransfer.2022.123638 | |
| dc.identifier.issn | 00179310 | |
| dc.identifier.other | 2-s2.0-85141451877 | |
| dc.identifier.uri | https://dspace.kmitl.ac.th/handle/123456789/14279 | |
| dc.source | International Journal of Heat and Mass Transfer | |
| dc.subject | Entropy generation | |
| dc.subject | Heat exchanger | |
| dc.subject | Louvered baffle | |
| dc.subject | Thermohydraulic performance | |
| dc.subject | Vortex generator | |
| dc.title | Entropy generation and thermal performance of tubular heat exchanger fitted with louvered corner-curved V-baffles | |
| dc.type | Article |