TY - JOUR
AU - Hami Dindar, Iman
AU - Mirzaei, Mona
AU - Baumhögger, Elmar
AU - Lutters, Nicole
AU - Kenig, Eugeny Y.
ID - 52097
JF - Journal of Chemical & Engineering Data
KW - General Chemical Engineering
KW - General Chemistry
SN - 0021-9568
TI - Experimental and Theoretical Investigation of CO2 Absorption in Aqueous Solution of Glucosamine: Material Property and Equilibrium Data
ER -
TY - JOUR
AU - Weber, Mike
AU - Lutters, Nicole
AU - Kenig, Eugeny Y.
ID - 52226
JF - Industrial & Engineering Chemistry Research
KW - Industrial and Manufacturing Engineering
KW - General Chemical Engineering
KW - General Chemistry
SN - 0888-5885
TI - Dynamics of an Absorption/Desorption Plant: Experimental Study and Model Validation
ER -
TY - JOUR
AU - Bruns, Bastian
AU - Gross, Michel
AU - Grünewald, Marcus
AU - Bertsch, Valentin
AU - Riese, Julia
ID - 52229
JF - Journal of Cleaner Production
KW - Industrial and Manufacturing Engineering
KW - Strategy and Management
KW - General Environmental Science
KW - Renewable Energy
KW - Sustainability and the Environment
KW - Building and Construction
SN - 0959-6526
TI - A multi-step framework for the design of a flexible power-to-methane process
ER -
TY - JOUR
AU - Riese, Julia
AU - Fasel, Henrik
AU - Pannok, Maik
AU - Lier, Stefan
ID - 52388
JF - Sustainable Production and Consumption
KW - Industrial and Manufacturing Engineering
KW - Renewable Energy
KW - Sustainability and the Environment
KW - Environmental Chemistry
KW - Environmental Engineering
SN - 2352-5509
TI - Decentralized production concepts for bio-based polymers - implications for supply chains, costs, and the carbon footprint
ER -
TY - GEN
AU - Hami Dindar, Iman
AU - Lutters, Nicole
AU - Kenig, Eugeny Y.
ID - 52579
TI - Wässrige Glucosaminlösung als neues Lösungsmittel zur CO2-Abscheidung
ER -
TY - JOUR
AB - Die Wirtschaftlichkeit von Wärmemotoren wird maßgeblich durch die Rückführung von Wärme in Rekuperatoren beeinflusst. Beim isobaren Expansionsmotor vom Bush-Typ, einem Wärmemotor, welcher bereits mit Wärmequellen ab 60°C betrieben werden kann, steigt der thermische Wirkungsgrad durch den Einsatz von Rekuperatoren signifikant. Gleichzeitig wirken sich das Fluidvolumen des Wärmeübertragers sowie der beim Betrieb auftretende Druckverlust negativ auf den thermischen Wirkungsrad aus. In dieser Arbeit wird der Zusammenhang von Totvolumen, Druckverlust und Wärmerückgewinnung untersucht und Empfehlungen für den Betrieb von Rekuperatoren am isobaren Expansionsmotor gegeben.
AU - Mügge, Nils
AU - Kronberg, Alexander
AU - Glushenkov, Maxim
AU - Kenig, Eugeny Y.
ID - 42252
IS - 5
JF - Chemie Ingenieur Technik
KW - Isobarer Expansionsmotor
KW - Dynamische Wärmeübertragungsmodellierung
KW - Phasenwechsel
KW - dichte Arbeitsmedien
TI - Untersuchung überlagerter Effekte von Druckverlust und Totvolumen durch Rekuperation am isobaren Expansionsmotor
VL - 95
ER -
TY - GEN
AU - Lutters, Nicole
AU - Buckmann, Felix
AU - Kenig, Eugeny Y.
ID - 43280
TI - Zur experimentellen Untersuchung der Reinstoffkondensation in Kissenplatten-Wärmeübertragern
ER -
TY - CONF
AU - Bernemann, Sören Antonius
AU - Maćkowiak, Jan
AU - Maćkowiak, Jerzy
AU - Kenig, Eugeny
ID - 43393
TI - Computerunterstützte Strömungsuntersuchung von landwirtschaftlichen Abfällen
ER -
TY - GEN
AU - Dechert, Christopher
AU - Kengni Nkouemou, Augustin
AU - Kenig, Eugeny Y.
ID - 43111
TI - Vergleichende Untersuchung der Wirkung verschiedener Mikrostrukturen auf die Flüssigkeitsausbreitung
ER -
TY - GEN
AU - Mamedov, Tural
AU - Schleicher, Eckhard
AU - Schubert, Markus
AU - Ehlert, Thomas
AU - Kenig, Eugeny Y.
AU - Hampel, Uwe
ID - 44096
TI - Experimental analysis of ship motion effects on the performance of an absorption column equipped with structured packings
ER -
TY - GEN
AU - Ehlert, Thomas
AU - Mamedov, Tural
AU - Schubert, Markus
AU - Kenig, Eugeny Y.
ID - 44094
TI - Charakterisierung des Einflusses neigungsinduzierter Strömungsformen mit dem Ansatz der hydrodynamsichen Analogie
ER -
TY - GEN
AU - Ehlert, Thomas
AU - Lutters, Nicole
AU - Kenig, Eugeny Y.
ID - 44095
TI - Modellierung des Randspalts in Strukturpackungskolonnen mit dem Ansatz der hydrodynamischen Analogien
ER -
TY - JOUR
AB - The technical importance of paraffins as phase change materials (PCM) in heat storage systems increases. Knowledge on the thermal conductivity of paraffins is necessary for the design and optimization of heat storage systems. However, for most paraffins solely the thermal conductivity of the liquid state has been sufficiently investigated. For the solid state, precise thermal conductivity data are only known for a few paraffins, while only generalized values are available for the remainder, some of which contradict each other. In this study, a measurement setup based on the modified guarded hot plate method is developed. It is used to investigate the thermal conductivity of several paraffines in the solid state, including pure n-docosane and its compounds with different types and concentrations of graphite. For n-docosane in the solid state, the thermal conductivity is determined to be 0.49 W/(m K). A particle size of 200 μm with a spherical shape turns out to be optimal to increase the thermal conductivity. This allows the thermal conductivity of a compound with 10% graphite to increase by a factor of three compared to the pure paraffin. Furthermore, significant differences to thermal conductivity data from the literature are found.
AU - Paul, Andreas
AU - Baumhögger, Elmar
AU - Dewerth, Mats-Ole
AU - Hami Dindar, Iman
AU - Sonnenrein, Gerrit
AU - Vrabec, Jadran
ID - 43391
JF - Journal of Thermal Analysis and Calorimetry
KW - Physical and Theoretical Chemistry
KW - Condensed Matter Physics
SN - 1388-6150
TI - Thermal conductivity of solid paraffins and several n-docosane compounds with graphite
ER -
TY - CONF
AU - Hami Dindar, Iman
AU - Lutters, Nicole
AU - Kenig, Eugeny
ID - 44320
T2 - Jahrestreffen der ProcessNet-Fachgruppen Fluidverfahrenstechnik und Adsoprtion
TI - Wässrige Glucosaminlösung als neues Lösungsmittel zur CO2-Abscheidung
ER -
TY - GEN
AU - Salten, Alexander Heinrich Johannes
AU - Al Trjman, Mohamad
AU - Meschut, Gerson
AU - Kenig, Eugeny Y.
ID - 44228
TI - Simulation des „viscous fingering“ Effektes in Klebverbindungen
ER -
TY - GEN
AU - Al Trjman, Mohamad
AU - Meschut, Gerson
AU - Salten, Alexander Heinrich Johannes
AU - Kenig, Eugeny Y.
ID - 44227
TI - Methodenentwicklung zur Simulation des Viscous Fingering in Klebverbindungen von stahlintensiven Mischbaustrukturen
ER -
TY - GEN
AU - Afsahnoudeh, Reza
AU - Holzmüller, Maik
AU - Bader, Fabian
AU - Homberg, Werner
AU - Kenig, Eugeny Y.
ID - 28941
TI - Numerische Untersuchung von Oberflächenstrukturierung zur Erhöhung der Effizienz von Kissenplatten-Wärmeübertragern
ER -
TY - JOUR
AU - Afsahnoudeh, Reza
AU - Wortmeier, Andreas
AU - Holzmüller, Maik
AU - XGong, Yi
AU - Homberg, Werner
AU - Kenig, Eugeny Y.
ID - 48498
IS - 21
JF - Energies
TI - Thermo-hydraulic Performance of Pillow-Plate Heat Exchangers with Secondary Structuring: A Numerical Analysis
VL - 16
ER -
TY - GEN
AU - Hollenhorst, Viola
AU - Kenig, Eugeny Y.
ID - 43047
TI - CFD-Untersuchungen der Fluiddynamik und des Wärmetransports an rauen Oberflächen
ER -
TY - THES
AB - Füllkörper spielen in industriellen Trennprozessen eine wichtige Rolle bspw. bei der Reinigung industrieller Abgase durch Absorption. Die Trennleistung von Füllkörperkolonnen wird üblicherweise mittels vereinfachter Stufenmodelle ermittelt, deren Modellparameter experimentell bestimmt werden müssen. Dies stellt eine große Schwäche von Stufenmodellen dar, da diese Parameterim Allgemeinen nicht auf verschiedene Stoffsysteme und Füllkörpertypen übertragbar sind.In dieser Arbeit wird ein Modell, basierend auf dem hydrodynamischen Analogieansatz, zur Beschreibung von Absorptionsvorgängen in Füllkörperkolonnen vorgestellt. Dabei ist die Geometrie der festen Phase direkt abhängig von der Füllkörpergeometrie und der Stochastik der Schüttung. Die tatsächlichen Strömungsverhältnisse in Füllkörperkolonnen werden erfasst und durch eine Kombination vereinfachter charakteristischer Strömungsformen reproduziert. Dies erlaubt die Verwendung rigoroser Transportgleichung. Dadurch enthält das Modell weniger experimentell zu ermittelnde Parameter und ist damit unabhängiger von Experimenten als vereinfachte Stufenmodelle. Das Modell wurde gegen experimentelle Daten zur CO2-Absorption in wässrige Natronlauge validiert. Mit dem entwickelten Modell wurde anschließend eine Parameterstudie durchgeführt, die der Unterstützung der Entwicklung neuer Füllkörpergeometrien dient. Dazu wurde eine Simulationsstudie durchgeführt, die den Einfluss der Füllkörpergeometrie auf die Trennleistung untersucht.
AU - Salten, Alexander Heinrich Johannes
ID - 52402
TI - Modellierung der Reaktivabsorption in regellosen Schüttungen und modellbasierte Optimierung von Füllkörpern mit dem Ansatz der hydrodynamischen Analogien
ER -
TY - JOUR
AU - Röder, Lilli Sophia
AU - Gröngröft, Arne
AU - Grünewald, Marcus
AU - Riese, Julia
ID - 51360
JF - Chemical Engineering Transactions
TI - Demand Side Management Implementation in Downstream Digestate Treatment of a Biomethane Biorefinery
VL - 105
ER -
TY - CONF
AU - Wende, Marc
AU - Fischer, Florian
AU - Kenig, Eugeny
ID - 31069
T2 - Jahrestreffen der ProcessNet Fachgruppen Fluidverfahrenstechnik und Hochdruckverfahrenstechnik
TI - Experimentelle Untersuchung und Modellvalidierung zur Gravidestillation
ER -
TY - GEN
AU - Mügge, Nils
AU - Kronberg, Alexander
AU - Glushenkov, Maxim
AU - Kenig, Eugeny
ID - 32446
T2 - Annual Meeting on Reaction Engineering and ProcessNet Subject Division Heat and Mass Transfer
TI - Heat regeneration model for external heat engines operating with dense working fluids
ER -
TY - GEN
AU - Haase, Michael
AU - Tasche, Frederik
AU - Bieber, Maximilian
AU - Zibart, Alexander
ID - 34020
TI - Innovative Leichtbau- und Kühlungskonzepte für elektrische Maschinen durch additive Fertigung (ILuKadd3D)
VL - Heft 1526
ER -
TY - CONF
AU - Bernemann, Sören Antonius
AU - Maćkowiak, Jan
AU - Maćkowiak, Jerzy
AU - Bertling, René
AU - Lutters, Nicole
AU - Kenig, Eugeny
ID - 31171
TI - Entwicklung eines innovativen Trennapparates zur Stickstoffrückgewinnung aus landwirtschaftlichen Abfällen
ER -
TY - JOUR
AB - An explicit approach using symplectic time integration in conjunction with traditional finite difference spatial derivatives to solve the wave equation in moving media is presented. A simple operator split of this second order wave equation into two coupled first order equations is performed, allowing these split equations to be solved symplectically. Orders of symplectic time integration ranging from first to fourth along with orders of spatial derivatives ranging from second to sixth are explored. The case of cylindrical acoustic spreading in air under a constant velocity in a 2D square structured domain is considered. The variation of the computed time-of-flight, frequency, and wave length are studied with varying grid resolution and the deviations from the analytical solutions are determined. It was found that symplectic time integration interferes with finite difference spatial derivatives higher than second order causing unexpected results. This is actually beneficial for unstructured finite volume tools like OpenFOAM where second order spatial operators are the state-of-the art. Cylindrical acoustic spreading is simulated on an unstructured 2D triangle mesh showing that symplectic time integration is not limited to the spatial discretization paradigm and overcomes the numerical diffusion arising with the in-built numerical methods which hinder wave propagation.
AU - Inguva, Venkatesh
AU - Feldmann, Nadine
AU - Claes, Leander
AU - Koturbash, Taras
AU - Hahn-Jose, Thomas
AU - Koutcherov, Vladimir
AU - Kenig, Eugeny
ID - 6579
JF - Engineering Reports
TI - An explicit symplectic approach to solving the wave equation in moving media
ER -
TY - GEN
AU - Bothe, Mike
AU - Lutters, Nicole
AU - Kenig, Eugeny Y.
ID - 31070
TI - Untersuchung von Gefahrensituationen bei industriellen Absorption/Desorption-Prozessen mittels dynamischer Simulation
ER -
TY - CONF
AU - Bernemann, Sören Antonius
AU - Maćkowiak, Jan
AU - Maćkowiak, Jerzy
AU - Bertling, René
AU - Lutters, Nicole
AU - Kenig, Eugeny
ID - 33522
KW - CFD
KW - simulation
KW - agricultural waste
KW - multiphase
TI - Development of an innovative separation unit for nitrogen recovery from agricultural waste
ER -
TY - GEN
AU - Mügge, Nils
AU - Kronberg, Alexander
AU - Glushenkov, Maxim
AU - Inguva, Venkatesh
AU - Kenig, Eugeny Y.
ID - 33972
T2 - 1st Conference on Energy, Environment and Digital Transition E2DT
TI - A Thermal Model for Recuperative Heat Engines Operating with Dense Working Fluids
ER -
TY - CONF
AU - Mapura, Luz Alejandra
AU - Kenig, Eugeny Y.
ID - 33035
T2 - Annual Meeting on Reaction Engineering and ProcessNet Subject Division "Heat and Mass Transfer"
TI - Effect of diffusivity and chemical reactions on the determination of mass transfer coefficients in columns with structured packing
ER -
TY - CONF
AU - Buckmann, Felix
AU - Kenig, Eugeny
ID - 33254
T2 - Annual Meeting on Reaction Engineering and ProcessNet Subject Division "Heat and Mass Transfer"
TI - Experimental study on the condensation of pure substances in outer pillow-plate channels
ER -
TY - GEN
AU - Mamedov, Tural
AU - Schleicher, Eckhard
AU - Schubert, Markus
AU - Ehlert, Thomas
AU - Kenig, Eugeny Y.
ID - 40647
TI - Liquid flow morphology investigation in structured packings for offshore applications using a novel flow imaging sensor
ER -
TY - GEN
AU - Dechert, Christopher
AU - Kenig, Eugeny
ID - 31183
TI - Untersuchung von kleinskaligen Flüssigkeitselementen auf mikrostrukturierten Packungsoberflächen
ER -
TY - JOUR
AU - Mügge, Nils
AU - Kronberg, Alexander
AU - Glushenkov, Maxim
AU - Inguva, Venkatesh
AU - Kenig, Eugeny Y.
ID - 34228
JF - Chemical Engineering Transactions
SN - 2283-9216
TI - A Thermal Model for Recuperative Heat Engines Operating with Dense Working Fluids
VL - 96
ER -
TY - GEN
AU - Dechert, Christopher
AU - Kenig, Eugeny
ID - 33485
T2 - Proceedings of the 12th international conference Distillation & Absorption 2022
TI - CFD-Based Investigation of the Packing Microstructure Influence on Droplet Behavior and Film Flow
ER -
TY - CONF
AU - Mügge, Nils
AU - Kronberg, Alexander
AU - Glushenkov, Maxim
AU - Kenig, Eugeny
ID - 31223
T2 - Heat Powered Cycles Conference 2022
TI - On Heat Regeneration Limitations in Heat Engines With Dense Working Fluids
ER -
TY - CONF
AU - Ehlert, Thomas
AU - Mamedov, Tural
AU - Schubert, Markus
AU - Kenig, Eugeny Y.
ID - 31186
TI - Modellierung des Stofftransportes in einer geneigten Kolonne mit dem Ansatz der hydrodynamischen Analogien
ER -
TY - JOUR
AU - Bothe, Mike
AU - Hami Dindar, Iman
AU - Lutters, Nicole
AU - Kenig, Eugeny Y.
ID - 33477
JF - Computers and Chemical Engineering
TI - Dynamic modeling of absorption/desorption closed-loop including periphery
ER -
TY - JOUR
AU - Schulz, Andreas Markus
AU - Wecker, Christian
AU - Inguva, Venkatesh
AU - Lopatin, Alexey S.
AU - Kenig, Eugeny Y.
ID - 27375
JF - Chemical Engineering Science
TI - A PLIC-based method for species mass transfer at free fluid interfaces
VL - 250
ER -
TY - JOUR
AU - Wecker, Christian
AU - Schulz, Andreas Markus
AU - Heine, Jens
AU - Bart, Hans Jörg
AU - Kenig, Eugeny Y.
ID - 28942
JF - International Journal of Heat and Mass Transfer
TI - Droplet formation –a numerical investigation of liquid-liquid systems with consideration of Marangoni convection
VL - 188
ER -
TY - JOUR
AU - Dai, Daokun
AU - Kenig, Eugeny Y.
AU - Numrich, Reiner
ID - 44239
IS - 6
JF - Chemie Ingenieur Technik
KW - Industrial and Manufacturing Engineering
KW - General Chemical Engineering
KW - General Chemistry
SN - 0009-286X
TI - Experimentelle Untersuchung der Tropfenkondensation am chemisch modifizierten Edelstahl‐Drallrohr
VL - 94
ER -
TY - JOUR
AU - Inguva, Venkatesh
AU - Kenig, Eugeny Y.
AU - Perot, J. Blair
ID - 44235
JF - Journal of Computational Physics
TI - A front-tracking method for two-phase flow simulation with no spurious currents
VL - 456
ER -
TY - CONF
AU - Zibart, Alexander
AU - Spang, Bernhard
AU - Kenig, Eugeny Y.
ID - 44242
SN - 1570-7946
T2 - Computer Aided Chemical Engineering
TI - Determination of the burst pressure of pillow plates using finite element methods
VL - 51
ER -
TY - JOUR
AB - In numerous turbomachinery applications, e.g., in aero-engines with regenerators for improving specific fuel consumption (SFC), heat exchangers with low-pressure loss are required. Pil low-plate heat exchangers (PPHE) are a novel exchanger type and promising candidates for high-speed flow applications due to their smooth profiles avoiding blunt obstacles in the flow path. This work deals with the overall system behavior and gas dynamics of pillow-plate channels. A pillow-plate channel was placed in the test section of a blow-down wind tunnel working with dry air, and compressible flow phenomena were investigated utilizing conventional and focusing schlieren optics; furthermore, static and total pressure measurements were performed. The experiments supported the assumption that the system behavior can be described through a Fanno–Rayleigh flow model. Since only wavy walls with smooth profiles were involved, linearized gas dynamics was able to cover important flow features within the channel. The effects of the wavy wall structures on pressure drop and Mach number distribution within the flow path were investigated, and a good qualitative agreement with theoretical and numerical predictions was found. The present analysis demonstrates that pressure losses in pillow-plate heat exchangers are rather low, although their strong turbulent mixing enables high convective heat transfer coefficients.
AU - Sundermeier, Stephan
AU - Passmann, Maximilian
AU - aus der Wiesche, Stefan
AU - Kenig, Eugeny Y.
ID - 44238
IS - 2
JF - International Journal of Turbomachinery, Propulsion and Power
KW - Mechanical Engineering
KW - Energy Engineering and Power Technology
KW - Aerospace Engineering
SN - 2504-186X
TI - Flow in Pillow-Plate Channels for High-Speed Turbomachinery Heat Exchangers
VL - 7
ER -
TY - JOUR
AU - Kenig, Eugeny Y.
ID - 44243
JF - Chemical Engineering Transactions
TI - State-of-the-Art Modeling of Separation Columns: A Review
VL - 94
ER -
TY - CONF
AU - Hami Dindar, Iman
AU - Baumhögger, Elmar
AU - Lutters, Nicole
AU - Kenig, Eugeny
ID - 31243
T2 - Jahrestreffen der ProcessNet Fachgruppen Fluidverfahrenstechnik und Hochdruckverfahrenstechnik
TI - Wässrige Aminozuckerlösungen als neue Lösungsmittel zur CO2-Abscheidung
ER -
TY - CONF
AU - Mamedov, Tural
AU - Schleicher, Eckhard
AU - Schubert, Markus
AU - Ehlert, Thomas
AU - Kenig, Eugeny Y.
AU - Hampel, Uwe
ID - 33887
T2 - Proceedings of the 12th international conference Distillation & Absorption 2022
TI - Flow Morphology of TEG Desiccant in a Structured Packing Air Dehumidifier Exposed to Floating Conditions
ER -
TY - JOUR
AB - Abstract
In two-phase flows in which the Capillary number is low, errors in the computation of the surface tension force at the interface cause Front-Capturing methods such as Volume of Fluid (VOF) and Level-Set (LS) to develop interfacial spurious currents. To better solve low Capillary number flows, special treatment is required to reduce such spurious currents. Smoothing the phase indicator field to more accurately compute the curvature or adding interfacial artificial viscosity are techniques that can treat this problem. This study explores OpenFOAM, Fluent and StarCCM+ VOF solvers for the classical case of a static bubble/droplet immersed in a continuous aqueous phase, with the focus on the ability of these solvers to adequately reduce spurious currents. The results are expected to be helpful for practicing chemical engineers who use multiphase CFD solvers in their work.
AU - Inguva, Venkatesh
AU - Schulz, Andreas
AU - Kenig, Eugeny
ID - 23785
JF - Chemical Product and Process Modeling
SN - 1934-2659
TI - On methods to reduce spurious currents within VOF solver frameworks. Part 1: a review of the static bubble/droplet
VL - 17
ER -
TY - JOUR
AU - Wende, Marc
AU - Staggenborg, Christoph
AU - Kenig, Eugeny Y.
ID - 44236
JF - Chemical Engineering Science
KW - Applied Mathematics
KW - Industrial and Manufacturing Engineering
KW - General Chemical Engineering
KW - General Chemistry
SN - 0009-2509
TI - Modelling and simulation of zero-gravity distillation units with metal foams
VL - 247
ER -
TY - CONF
AU - Bothe, Mike
AU - Lutters, Nicole
AU - Kenig, Eugeny Y.
ID - 33479
T2 - Proceedings of the 12th international conference Distillation & Absorption 2022
TI - Model Based and Experimental Analysis of the Dynamic Reactive Absorption Loop Behavior
ER -