Hydrodynamic evaluation of gas testing chamber: Simulation, experiment
| Autor: | Fatima-Ezahra Annanouch, Khalifa Aguir, Marc Bendahan, Christelle Reynard-Carette, Nicolas Morati, V. Martini-Laithier, Pierre Perrier, Gilles Bouchet |
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| Přispěvatelé: | Institut des Matériaux, de Microélectronique et des Nanosciences de Provence (IM2NP), Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS)-Aix Marseille Université (AMU), Institut universitaire des systèmes thermiques industriels (IUSTI), Centre National de la Recherche Scientifique (CNRS)-Aix Marseille Université (AMU), Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS), Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Nuclear engineering 02 engineering and technology 010402 general chemistry 01 natural sciences Whole systems [SPI]Engineering Sciences [physics] Homogeneity (physics) Materials Chemistry Electrical and Electronic Engineering Instrumentation [SDE.IE]Environmental Sciences/Environmental Engineering Metals and Alloys Gas concentration 021001 nanoscience & nanotechnology Condensed Matter Physics 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials [SPI.TRON]Engineering Sciences [physics]/Electronics Gas testing chamber Tin oxide Power consumption Test chamber Metal oxides Mathematical modeling 0210 nano-technology Gas sensor gas flow simulation |
| Zdroj: | Sensors and Actuators B: Chemical Sensors and Actuators B: Chemical, Elsevier, 2019, 290, pp.598-606. ⟨10.1016/j.snb.2019.04.023⟩ Sensors and Actuators B: Chemical, 2019, 290, pp.598-606. ⟨10.1016/j.snb.2019.04.023⟩ |
| ISSN: | 0925-4005 |
| DOI: | 10.1016/j.snb.2019.04.023⟩ |
| Popis: | International audience; Gas concentration measurements by means of metal oxide microsensors represent a promising issue due to several advantages (size, low cost, power consumption, reliability…). However, improvements are required to increase performances of complete experimental systems including microsensor and testing chamber at least. This paper deals with the study of different size and shape configurations of gas testing chamber, by coupling 3D unsteady modelling and experiments in the case of a SnO 2 sensor with ethanol gas flow. The influence of the testing-chamber design on the gas flow hydrodynamics and on the system response is shown. A new 3D-printed prototype chamber (boat-shape design), as compared to the commonly used testing chamber (cross-shape design), leads to an increase of the dynamics, an enhancement of the gas concentration homogeneity and a significant reduction of flow recirculation and dead volumes. In this work we have shown that the optimization of the test chamber (volume and shape) makes it possible to get as close as possible to the real electrical characteristics of the sensor. Consequently thanks to these new achieved characteristics, the performances of the whole system are improved. |
| Databáze: | OpenAIRE |
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