Infrared thermospectroscopic imaging of heat and mass transfers in laminar microfluidic reactive flows

In this work, a novel image-based method is presented to characterize the heat and mass transfer rates in a Hele-Shaw microfluidic reactor. A Fourier transform infrared (FTIR) spectrometer is used in transmission mode in combination with an infrared (IR) camera to simultaneously measure the molar co...

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Autores principales:	S. Chevalier, J.-N. Tourvieille, A. Sommier, C. Pradère
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Thermospectroscopy Microfluidic reactor FTIR imaging Inverse processing Thermal fields Heat and mass transfer Chemical engineering TP155-156
Acceso en línea:	https://doaj.org/article/1e4b1a7b9def4a7aa727811d819a1dd4
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spelling	oai:doaj.org-article:1e4b1a7b9def4a7aa727811d819a1dd42021-11-18T04:52:59ZInfrared thermospectroscopic imaging of heat and mass transfers in laminar microfluidic reactive flows2666-821110.1016/j.ceja.2021.100166https://doaj.org/article/1e4b1a7b9def4a7aa727811d819a1dd42021-11-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S266682112100082Xhttps://doaj.org/toc/2666-8211In this work, a novel image-based method is presented to characterize the heat and mass transfer rates in a Hele-Shaw microfluidic reactor. A Fourier transform infrared (FTIR) spectrometer is used in transmission mode in combination with an infrared (IR) camera to simultaneously measure the molar concentration and the thermal fields in the microfluidic chip within few seconds. A classical exothermic NaOH + HCl → NaCl + H2O chemical reaction is used to produce a multiphase flow and a heat source in the reactor. The molar concentration fields of all the species are measured using the IR spectrum in the mid-IR region, and the heat fields are obtained simultaneously from the proper emission. The quantitative aspect of the method is illustrated by comparing the molar concentration profiles to a reactor model, based on the advection-diffusion-reaction equations. The good agreement between the model and experimental data validates the method, and the expected strong diffusion-limited reaction regime in laminar microfluidic reactor is achieved. Thus, the results of this work provide a new and efficient thermospectroscopic imaging method to perform rapid, contactless and in operando heat and mass transfer characterizations in laminar microfluidic reactive flows.S. ChevalierJ.-N. TourvieilleA. SommierC. PradèreElsevierarticleThermospectroscopyMicrofluidic reactorFTIR imagingInverse processingThermal fieldsHeat and mass transferChemical engineeringTP155-156ENChemical Engineering Journal Advances, Vol 8, Iss , Pp 100166- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Thermospectroscopy Microfluidic reactor FTIR imaging Inverse processing Thermal fields Heat and mass transfer Chemical engineering TP155-156
spellingShingle	Thermospectroscopy Microfluidic reactor FTIR imaging Inverse processing Thermal fields Heat and mass transfer Chemical engineering TP155-156 S. Chevalier J.-N. Tourvieille A. Sommier C. Pradère Infrared thermospectroscopic imaging of heat and mass transfers in laminar microfluidic reactive flows
description	In this work, a novel image-based method is presented to characterize the heat and mass transfer rates in a Hele-Shaw microfluidic reactor. A Fourier transform infrared (FTIR) spectrometer is used in transmission mode in combination with an infrared (IR) camera to simultaneously measure the molar concentration and the thermal fields in the microfluidic chip within few seconds. A classical exothermic NaOH + HCl → NaCl + H2O chemical reaction is used to produce a multiphase flow and a heat source in the reactor. The molar concentration fields of all the species are measured using the IR spectrum in the mid-IR region, and the heat fields are obtained simultaneously from the proper emission. The quantitative aspect of the method is illustrated by comparing the molar concentration profiles to a reactor model, based on the advection-diffusion-reaction equations. The good agreement between the model and experimental data validates the method, and the expected strong diffusion-limited reaction regime in laminar microfluidic reactor is achieved. Thus, the results of this work provide a new and efficient thermospectroscopic imaging method to perform rapid, contactless and in operando heat and mass transfer characterizations in laminar microfluidic reactive flows.
format	article
author	S. Chevalier J.-N. Tourvieille A. Sommier C. Pradère
author_facet	S. Chevalier J.-N. Tourvieille A. Sommier C. Pradère
author_sort	S. Chevalier
title	Infrared thermospectroscopic imaging of heat and mass transfers in laminar microfluidic reactive flows
title_short	Infrared thermospectroscopic imaging of heat and mass transfers in laminar microfluidic reactive flows
title_full	Infrared thermospectroscopic imaging of heat and mass transfers in laminar microfluidic reactive flows
title_fullStr	Infrared thermospectroscopic imaging of heat and mass transfers in laminar microfluidic reactive flows
title_full_unstemmed	Infrared thermospectroscopic imaging of heat and mass transfers in laminar microfluidic reactive flows
title_sort	infrared thermospectroscopic imaging of heat and mass transfers in laminar microfluidic reactive flows
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/1e4b1a7b9def4a7aa727811d819a1dd4
work_keys_str_mv	AT schevalier infraredthermospectroscopicimagingofheatandmasstransfersinlaminarmicrofluidicreactiveflows AT jntourvieille infraredthermospectroscopicimagingofheatandmasstransfersinlaminarmicrofluidicreactiveflows AT asommier infraredthermospectroscopicimagingofheatandmasstransfersinlaminarmicrofluidicreactiveflows AT cpradere infraredthermospectroscopicimagingofheatandmasstransfersinlaminarmicrofluidicreactiveflows
_version_	1718424960684261376

Infrared thermospectroscopic imaging of heat and mass transfers in laminar microfluidic reactive flows

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