Enhancement of Heat Transfer for Plate Fin Heat Exchangers Considering the Effects of Fin Arrangements
| Autor: | Koray Karabulut, Ertan Buyruk |
|---|---|
| Přispěvatelé: | [Buyruk, Ertan] Cumhuriyet Univ, Mech Engn Dept, Sivas, Turkey -- [Karabulut, Koray] Cumhuriyet Univ, Energy Syst Engn Dept, Sivas, Turkey |
| Rok vydání: | 2017 |
| Předmět: |
Fluid Flow and Transfer Processes
Fin Materials science Mechanical Engineering Plate heat exchanger 02 engineering and technology Condensed Matter Physics Annular fin 020303 mechanical engineering & transports 020401 chemical engineering 0203 mechanical engineering Zigzag Heat exchanger Heat transfer Micro heat exchanger Plate fin heat exchanger 0204 chemical engineering Composite material |
| Zdroj: | Heat Transfer Engineering. 39:1392-1404 |
| ISSN: | 1521-0537 0145-7632 |
| DOI: | 10.1080/01457632.2017.1366238 |
| Popis: | WOS: 000442000300006 In the present study, the potential of rectangular fins with different fin types of inner zigzag-flat-outer zigzag (B-type) and outer zigzag-flat-outer zigzag (C-type) and with different fin angles of 30 degrees and 90 degrees for 2mm fin height and 10mm offset from the horizontal direction for heat transfer enhancement with the use of a conjugated heat transfer approach and for pressure drop in a plate fin heat exchanger is numerically evaluated. The rectangular fins are located on a flat plate channel (A-type). The numerical computations are performed by solving a steady, three-dimensional Navier-Stokes equation and an energy equation by using FLUENT software program. Air is taken as working fluid. The study is carried out at Reynolds number of 400 and inlet temperatures, velocities of cold and hot air are fixed as 300K, 600K and 1.338 m.s(-1), 0.69 m.s(-1), respectively. This study presents new fin geometries which have not been researched in the literature for plate fin heat exchangers. The results show that while the heat transfer is increased by about 10% at the exit of a channel with the fin type of C, it is increased up to 8% for the fin angle of 90 degrees when compared to a channel with A-type under the counter flow. The heat transfer enhancements for different values of Reynolds number and for varying fin heights, fin intervals and also temperature distributions of fluids are investigated for parallel and counter flow. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|