Authors: | Vietinghoff, Niclas von Lungrin, Waldemar Schulzke, Raphael Tilly, Jonas Agar, David W. |
Title: | Photoelectric sensor for fast and low-priced determination of bi- and triphasic segmented slug flow parameters |
Language (ISO): | en |
Abstract: | Applying multiphase systems in microreactors leads to an intensification of heat and mass transport. Critical aspects of the well-studied segmented slug-flow, such as bubble generation and pump control, can be automated, provided a robust sensor for the reliable determination of velocity, phase lengths, and phase ratio(s) is available. In this work, a fast and low-priced sensor is presented, based on two optical transmission sensors detecting flow characteristics noninvasively together with a microcontroller. The resulting signal is mainly due to refraction of the bubble-specific geometries as shown by a simulation of light paths. The high performance of the processing procedure, utilizing the derivative of the signal, is demonstrated for a bi- and triphasic slug flow. The error of <5% is entirely reasonable for the purpose envisaged. The sensor presented is very fast, robust, and inexpensive, thus enhancing the attractiveness of parallelized capillary reactors for industrial applications. |
Subject Headings: | Segmented slug flow Optoelectric sensor Online velocity measurement Multiphase systems Capillary reactor |
URI: | http://hdl.handle.net/2003/39867 http://dx.doi.org/10.17877/DE290R-21758 |
Issue Date: | 2020-12-04 |
Rights link: | https://creativecommons.org/licenses/by/4.0/ |
Appears in Collections: | Lehrstuhl Chemische Verfahrenstechnik |
Files in This Item:
File | Description | Size | Format | |
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sensors-20-06948.pdf | 8.83 MB | Adobe PDF | View/Open |
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