The importance of the finning technology in modernizing simple solar air-heat exchangers
| Autor: | Younes Menni, Kamal Amghar, Rachid Maouedj, Houari Ameur |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Convection Materials science Turbulence Reynolds number Baffle 02 engineering and technology Mechanics 021001 nanoscience & nanotechnology 01 natural sciences Friction loss Physics::Fluid Dynamics symbols.namesake 0103 physical sciences Heat transfer Heat exchanger symbols Duct (flow) 0210 nano-technology |
| Zdroj: | Materials Today: Proceedings. 45:7547-7552 |
| ISSN: | 2214-7853 |
| DOI: | 10.1016/j.matpr.2021.02.363 |
| Popis: | This manuscript reports computational fluid dynamic simulations of turbulent air forced-convection and friction loss in a horizontal-duct air-heat exchanger. Epsilon-shaped baffles are inserted on the bottom wall of the channel to augment its thermal efficiency. The working fluid is flowing under Reynolds numbers (Re) within the range [17,000–32,000]. The presence of the epsilon-shaped vortex generator (VG) in the duct heat exchanger forced a considerable increase of the convective thermal transfer in the domain, but it caused also significant friction losses. For all Re numbers used, the heat transfer rate in epsilon-shaped baffle case was upper than that in no-baffle case, which indicates that the epsilon-baffled exchanger is more efficient than the simple exchanger with no VG. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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