Calorimetric Monitoring of Exothermic Reactions by Distributed Acoustic Sensing

IF 2.2 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Sensors Letters Pub Date : 2025-09-04 DOI:10.1109/LSENS.2025.3606119

Yannik Schick;Guilherme H. Weber;Robin Hohensinn;Danilo F. Gomes;Cicero Martelli;Mark W. Hlawitschka;Marco J. Da Silva

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引用次数: 0

Abstract

This letter demonstrates the potential of low-frequency distributed acoustic sensing (LF-DAS) for calorimetric monitoring of chemical reactions. Using 2-propanol–water mixing as an exothermic model reaction, we employ a

$\phi$

-optical time-domain reflectometry DAS system to quantify heat release with spatio-temporal resolution. The fiber-optic system captures thermally induced phase shifts of the narrowband laser, enabling quantitative heat release analysis with high agreement to theory. The presented calibration enables relating optical phase changes to temperature variation. Experimental results show the DAS system's ability to identify thermal hotspots and provide real-time insights into reaction dynamics. This work addresses key challenges in hotspot detection, introduces a novel approach for safe, efficient process control, and highlights the potential of LF-DAS for advanced calorimetric monitoring of large-scale exothermic (reactor) systems.

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分布式声传感放热反应的量热监测

这封信展示了低频分布式声传感（LF-DAS）用于化学反应的量热监测的潜力。采用2-丙醇-水混合作为放热模型反应，我们采用$\phi$光学时域反射DAS系统，以时空分辨率量化热释放。光纤系统捕获窄带激光的热诱导相移，使定量热释放分析与理论高度一致。所提出的校准能够将光学相位变化与温度变化联系起来。实验结果表明，DAS系统能够识别热热点，并提供反应动力学的实时信息。这项工作解决了热点检测中的关键挑战，介绍了一种安全、有效的过程控制新方法，并强调了LF-DAS在大型放热（反应器）系统的高级量热监测中的潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Sensors Letters Engineering-Electrical and Electronic Engineering

CiteScore

3.50

自引率

7.10%

发文量

194