Countercurrent gas-liquid flow in plate-fin heat exchangers with plain and perforated fins
| Autor: | N. Souidi, André Bontemps |
|---|---|
| Přispěvatelé: | Laboratoire Systèmes Thermiques (Greth/LETH), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Laboratoire des Écoulements Géophysiques et Industriels [Grenoble] (LEGI), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF), Laboratoire Systèmes Thermiques (GRETh/LETH), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2001 |
| Předmět: |
Materials science
Fin Countercurrent exchange 020209 energy 02 engineering and technology Compact heat exchangers 01 natural sciences 010305 fluids & plasmas Narrow rectangular channels [SPI.MECA.MEFL]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Fluids mechanics [physics.class-ph] Narrow channel Flooding 0103 physical sciences Heat exchanger 0202 electrical engineering electronic engineering information engineering [PHYS.MECA.MEFL]Physics [physics]/Mechanics [physics]/Fluid mechanics [physics.class-ph] Fluid Flow and Transfer Processes Perforated fins Mechanical Engineering Reflux condensation Plate heat exchanger Mechanics Flow pattern Condensed Matter Physics Volumetric flow rate Plain fins Gas liquid flow Countercurrent flow |
| Zdroj: | International Journal of Heat and Fluid Flow International Journal of Heat and Fluid Flow, Elsevier, 2001, 22 (4), pp.450-459. ⟨10.1016/S0142-727X(01)00076-5⟩ International Journal of Heat and Fluid Flow, 2001, 22 (4), pp.450-459. ⟨10.1016/S0142-727X(01)00076-5⟩ |
| ISSN: | 0142-727X |
| Popis: | Countercurrent gas–liquid flow in narrow rectangular channels simulated by plain and perforated fins is studied. Different flow patterns dependent on flow rates are observed and visualised in the channels. Flooding velocities and pressure drops are measured. Results are compared with previous experimental data obtained in rectangular channels. The present results focus on two particular types of flooding phenomena: that occurring at the column base and linked to plugging and that at the top, linked to reentrainment. A further set of experiments using perforated fins surprisingly shows a greater tendency to flooding of the perforated fins. However, there are marked differences for the two types of fins and an explanation may be the two distinct flooding occurrences. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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