Modelling heat and mass transfer in solar evaporation systems
| Autor: | Vanessa Fierro, V. Nicolas, R. Fillet, Alain Celzard |
|---|---|
| Přispěvatelé: | Institut Jean Lamour (IJL), Université de Lorraine (UL)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Evaporation Porous media 02 engineering and technology Radiation 010402 general chemistry 01 natural sciences 7. Clean energy [SPI.MAT]Engineering Sciences [physics]/Materials Solar energy Mass transfer Biosourced material [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering Boundary value problem Evaporator Physics::Atmospheric and Oceanic Physics Fluid Flow and Transfer Processes [PHYS]Physics [physics] Water transport Mechanical Engineering Mechanics Heat and mass transfers 021001 nanoscience & nanotechnology Condensed Matter Physics 0104 chemical sciences Solar evaporation 13. Climate action 0210 nano-technology Porous medium Layer (electronics) Simulation |
| Zdroj: | International Journal of Heat and Mass Transfer International Journal of Heat and Mass Transfer, Elsevier, In press, 181, pp.121852. ⟨10.1016/j.ijheatmasstransfer.2021.121852⟩ |
| ISSN: | 0017-9310 |
| DOI: | 10.1016/j.ijheatmasstransfer.2021.121852⟩ |
| Popis: | International audience; A two-dimensional axisymmetric model of a solar evaporator was developed, based on a rigid biosourced open-cell foam floating on the surface of water contained in a beaker, including a set of boundary conditions and water transport in the porous medium. Experiments were carried out to validate the model for two cases, with and without a layer of insulating material around the beaker. Several concrete cases of experimental solar evaporation studies recently reported in the literature, with or without insulation, radiation intensification, etc., have then been studied in the light of our model. We have thus been able to compare the observed trends with those of the numerical model in order to explain the results reported in the literature and, in some cases, to find a geometric optimum. The effect of ambient conditions on the evaporation rate was investigated, and significant changes were observed by modifying solar input, air temperature and air humidity. We also showed that increasing the evaporation area and using an insulating layer between the water and the evaporative material increases the evaporation performance. |
| Databáze: | OpenAIRE |
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