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Reaction Calorimetry for Exothermic Reactions in Plate‐Type Microreactors Using Seebeck Elements
Author(s) -
Reichmann Felix,
Millhoff Stefan,
Jirmann Yannick,
Kockmann Norbert
Publication year - 2017
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201700419
Subject(s) - microreactor , exothermic reaction , calorimeter (particle physics) , thermoelectric effect , mixing (physics) , heating element , chemistry , heat transfer , joule heating , joule (programming language) , materials science , reaction calorimeter , work (physics) , heat flux , thermodynamics , analytical chemistry (journal) , calorimetry , optics , power (physics) , composite material , organic chemistry , physics , catalysis , detector , quantum mechanics
A flexible reactor and measurement setup to safely obtain thermokinetic data for exothermic chemical reactions in plate‐type microreactors is presented. Precise heat flux measurement is realized by means of Seebeck elements and allows for direct as well as space‐ and time‐resolved heat flux determination across the reactor. The microreactor used in this work is manufactured from poly(vinylidene fluoride) foils and consists of 11 SZ‐shaped mixing channel elements. The Seebeck elements are calibrated by the Joule effect, while its performance is demonstrated in heat transfer and neutralization reaction experiments. Furthermore, the local resolution enables an estimation of mixing time scale for rapid reactions. A comparison of obtained results indicates good accordance with literature data and is the base of further investigations using the calorimeter.