Experimental and numerical study of a falling film absorber in an ammonia-water absorption chiller
| Autor: | Sylvain Bonnot, Hélène Demasles, Maxime Perier-Muzet, Delphine Triché, François Boudéhenn, Nadia Caney |
|---|---|
| Přispěvatelé: | Laboratoire d'Innovation pour les Technologies des Energies Nouvelles et les nanomatériaux (LITEN), Institut National de L'Energie Solaire (INES), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), 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 Grenoble Alpes [2016-2019] (UGA [2016-2019]), Procédés, Matériaux et Energie Solaire (PROMES), Université de Perpignan Via Domitia (UPVD)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Chiller
Materials science 020209 energy Thermodynamics 02 engineering and technology law.invention law Mass transfer 0202 electrical engineering electronic engineering information engineering Mass flow rate Absorption (electromagnetic radiation) Absorption chiller experimental prototype Absorber numerical model Fluid Flow and Transfer Processes Falling film absorber Mechanical Engineering Plate heat exchanger Mechanics 021001 nanoscience & nanotechnology Condensed Matter Physics Coolant Ammonia-water absorption chiller Heat transfer Absorption refrigerator [SPI.MECA.THER]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Thermics [physics.class-ph] 0210 nano-technology |
| Zdroj: | International Journal of Heat and Mass Transfer International Journal of Heat and Mass Transfer, 2017, 111, pp.374-385. ⟨10.1016/j.ijheatmasstransfer.2017.04.008⟩ International Journal of Heat and Mass Transfer, Elsevier, 2017, 111, pp.374-385. ⟨10.1016/j.ijheatmasstransfer.2017.04.008⟩ |
| ISSN: | 0017-9310 |
| DOI: | 10.1016/j.ijheatmasstransfer.2017.04.008⟩ |
| Popis: | International audience; In this paper,experimental and numerical studies of heat and mass transfer in a falling film absorber are presented. The investigated absorber is a plate heat exchanger used ina falling film configuration. The ammonia-water solution flows in a falling film mode along the plates. The vapour flows co-current with the falling film and the coolant fluid is in a counter-current flow with the falling film. A prototype of ammonia-water absorption chiller isused to experimentally study the absorber behaviour in real operating conditions. Amacro study of the absorber and a local analysis deduced from local temperatures measurements along the falling film are presented. A numerical model and a simulation tool aredeveloped in order to complete the experimental investigations.The associatednumerical parametric studyaims to separatethe coolant mass flow rate impact.The model is validated with experimental dataand a maximal relative error of 15 % is observedbetween experimental and numerical results. The results of this study suggest that during the absorption process,mass transfers are controlled by the falling film mass transfer resistance and that the liquid-side heat transfer resistance is negligible. |
| Databáze: | OpenAIRE |
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