Custom-designed 3D-printed metallic fluid guiding elements for enhanced heat transfer at low pressure drop

Hansjosten, E.; Wenka, A.; Hensel, Andreas; Benzinger, W.; Klumpp, Michael; Dittmeyer, Roland

doi:10.1016/j.cep.2018.05.022

Cited by 36 publications

(35 citation statements)

References 28 publications

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“…1b. The FGEs do not generate turbulence but aim for a laminar guiding of the fluid flow to keep the pressure drop low by smart division and recombination of the flow and generated partial flows, respectively 16. After partial flow A had contact with the mass transferring region for resaturation, the O 2 ‐ or H 2 ‐dosage area in Fig.…”

Section: Methodsmentioning

confidence: 99%

“…In order to decrease the diffusion length at any fluid velocity contrary to suspension flow catalysis 6, we investigated catalytically coated inserts in the flow channels. Specifically, we used the design of so‐called fluid guiding elements (FGEs), recently developed in our institute 16. The impact of the inserts was investigated numerically in a CFD simulation using OpenFOAM® (OF) 17.…”

Section: Introductionmentioning

confidence: 99%

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Simulation of Fluid Flow During Direct Synthesis of H₂O₂ in a Microstructured Membrane Reactor

Trinkies

Düll

Deschner

et al. 2021

Chemie Ingenieur Technik

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A microstructured membrane reactor has been developed to overcome the safety and productivity challenge of the direct synthesis of hydrogen peroxide. A single membrane is employed for separate, continuous dosage of the gaseous reactants hydrogen and oxygen to the solid catalyst present in the aqueous solvent. Using a custom OpenFOAM® model, the impact of catalyst‐coated static mixers with different mixer geometries is studied. It is demonstrated that the custom fluid guiding elements outperform the investigated commercial static mixer under the flow conditions relevant to this application.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Simulation of Fluid Flow During Direct Synthesis of H₂O₂ in a Microstructured Membrane Reactor

Trinkies

Düll

Deschner

et al. 2021

Chemie Ingenieur Technik

Self Cite

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“…Wichtige Argumente für die Umrüstungsentscheidung waren erzielbare Produktqualitäten, signifikant verbesserte Ausbeuten, Sicherheitsaspekte und kurze Kapitalrückflusszeiten. Weitere Beispiele aus der Forschung für Prozessintensivierung in der Verfahrenstechnik sind u. a. rotierende Destillations‐, Absorptions‐ und Extraktionsapparate sowie 3D‐gefertigte Wärmetauscher , .…”

Section: Beschleunigte Globalisierte Innovationunclassified

Trends der chemischen Prozessindustrie

Schäfer

Sauer

2020

Chemie Ingenieur Technik

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Aktuelle Trends aus der chemischen Prozesstechnik im Rahmen der Begleitforschung des Forschungsnetzwerkes Energie in Industrie und Gewerbe (EE4InG) werden vorgestellt. Wir gehen davon aus, dass die Trends zirkuläre Wirtschaft und beschleunigte globalisierte Innovation (Modularisierung, Prozessintensivierung und Digitalisierung) bis 2030 auf die Chemieindustrie wirken. Die Technologieentwicklung anhand dieser Trends erlaubt es dem Chemieingenieurswesen, zukünftig entscheidende Beiträge zur Flexibilisierung und Defossilisierung der Wertschöpfungsketten zu leisten.

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“…Adopting the idea of 3DP, the enhanced tube assembly conventionally consisting of pipes and inserts can be printed as a single part, and the insert element can be added at any location with controllable clearance but without any additional mechanical connection. Actually, there are some researchers utilising 3DP to realise a complex internal fluid guiding element and membrane in a compact heat exchanger, which are not applicable using conventional manufacturing methods [32,33]. Whereas there is limited research about the 3DP-optimized twisted tape insert, this article investigates the geometric features of a single insert element that is achievable by 3DP, and hopefully provides some reference for related research.…”

Section: Introductionmentioning

confidence: 99%

Internal Flow Analysis of a Heat Transfer Enhanced Tube with a Segmented Twisted Tape Insert

et al. 2020

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A heat exchanger is a device that transfers unneeded heat from one region to another, and transferred heat may be fully reused, thus improving energy efficiency. To augment this positive process, many studies and investigations on automation technologies have been performed. Inserts are widely used in pipe flow for heat transfer enhancement, since they can break the boundary layer and promote the heat exchange. Segmented twisted tape, which is applicable in 3D printing, is a novel insert and has potential in heat transfer enhancement. To clarify its advantages and disadvantages, this research presents a numerical investigation of vortex flow and heat enhancement in pipes containing one segmented twisted element. Flow state and heat transfer behaviour are obtained by simulation under constant wall temperature with different Reynolds numbers, ranging from 10,000 to 35,000. The effects of geometric parameters, including twist ratio (P/D = 2.0, 3.3 and 4.6) and length ratio (L/P = 0.3, 0.5 and 0.7), on the Nusselt number (Nu) and friction factor (f) are investigated. Streamline and temperature distribution are presented. Meanwhile, local and overall heat transfer performance is compared with those of a smooth tube, and the overall performance is evaluated by performance evaluation factor (η). The results indicate that the twist ratio (P/D) plays a dominant role in heat transfer enhancement while the length ratio (L/P) also has considerable influence. It is shown that a segmented tape insert can increase the overall heat transfer rate by 23.5% and the friction factor by 235%, while local improvement along the tube can be 2.8 times more than the plain tube.

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Custom-designed 3D-printed metallic fluid guiding elements for enhanced heat transfer at low pressure drop

Cited by 36 publications

References 28 publications

Simulation of Fluid Flow During Direct Synthesis of H₂O₂ in a Microstructured Membrane Reactor

Simulation of Fluid Flow During Direct Synthesis of H₂O₂ in a Microstructured Membrane Reactor

Trends der chemischen Prozessindustrie

Internal Flow Analysis of a Heat Transfer Enhanced Tube with a Segmented Twisted Tape Insert

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Custom-designed 3D-printed metallic fluid guiding elements for enhanced heat transfer at low pressure drop

Cited by 36 publications

References 28 publications

Simulation of Fluid Flow During Direct Synthesis of H2O2 in a Microstructured Membrane Reactor

Simulation of Fluid Flow During Direct Synthesis of H2O2 in a Microstructured Membrane Reactor

Trends der chemischen Prozessindustrie

Internal Flow Analysis of a Heat Transfer Enhanced Tube with a Segmented Twisted Tape Insert

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Product

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Simulation of Fluid Flow During Direct Synthesis of H₂O₂ in a Microstructured Membrane Reactor

Simulation of Fluid Flow During Direct Synthesis of H₂O₂ in a Microstructured Membrane Reactor