@article{64158,
  abstract     = {{<jats:title>ABSTRACT</jats:title>
                  <jats:p>
                    Electrification offers a promising route to reduce CO
                    <jats:sub>2</jats:sub>
                    emissions in the chemical sector. In distillation, heat pump integration such as mechanical vapor recompression (MVR) can replace fossil‐based utilities, but column parameters like pressure drop should be accurately considered when assessing integration potential. This work discusses the effect of feed preheating and column pressure drop on MVR integration potential. The two binary separation tasks, methanol–water and benzene–toluene, are analyzed to identify energetically optimal preheater and MVR design. In addition, MVR integration in a bioethanol vacuum distillation sequence is evaluated for utility demand, CO
                    <jats:sub>2</jats:sub>
                    emissions, and economic feasibility under varying pressure drops, preheating configurations, and cost and emission scenarios.
                  </jats:p>}},
  author       = {{Hochhaus, Thorben and Siepmann, Sebastian and Grünewald, Marcus and Riese, Julia}},
  issn         = {{0009-286X}},
  journal      = {{Chemie Ingenieur Technik}},
  publisher    = {{Wiley}},
  title        = {{{Impact of Distillation Column Design on Potential for the Integration of Mechanical Vapor Recompression}}},
  doi          = {{10.1002/cite.70074}},
  year         = {{2026}},
}

@article{64159,
  abstract     = {{<jats:title>ABSTRACT</jats:title>
                  <jats:p>Separation processes, such as distillation and stripping, are highly energy‐intensive. Typically, energy is supplied indirectly via a reboiler, which is often associated with heat losses. We present a preliminary theoretical evaluation of a novel concept to supply energy directly inside the column using heatable structured packings. These packings can be produced by multi‐material 3D printing, resulting in a conductive inner layer and an insulating outer layer. Functioning as electric resistance heaters, these packings serve as heating elements. In this numerical study, we compared different scenarios of energy supply along the height of the column, including uniform distribution, applying a temperature profile, and using or omitting a reboiler.</jats:p>}},
  author       = {{Lutters, Nicole and Brüne, Sascha and Riese, Julia}},
  issn         = {{0009-286X}},
  journal      = {{Chemie Ingenieur Technik}},
  publisher    = {{Wiley}},
  title        = {{{Preliminary Numerical Evaluation of Directly Heated Structured Packings to be Used for Separation Processes}}},
  doi          = {{10.1002/cite.70076}},
  year         = {{2026}},
}

@article{64876,
  abstract     = {{<jats:title>ABSTRACT</jats:title>
                  <jats:p>This study shows the applicability of ultrasonic sensors for measuring two‐phase layer heights in sieve tray columns under dynamic operating conditions. Although these sensors are known for their precision in stationary systems, their reliability under fluctuating flow conditions has remained unclear. To validate their accuracy, ultrasonic measurements were compared with both automated image analysis via a Python algorithm and manual video evaluation. Results show that ultrasonic sensors maintain high precision at moderate gas loads and with small hole diameters. Increased gas loads and turbulence, however, reduced measurement accuracy due to signal scattering. The findings highlight the potential of ultrasonic sensing for real‐time, noninvasive monitoring in dynamic multiphase systems.</jats:p>}},
  author       = {{Breuer, Niklas and Grünewald, Marcus and Riese, Julia}},
  issn         = {{0009-286X}},
  journal      = {{Chemie Ingenieur Technik}},
  publisher    = {{Wiley}},
  title        = {{{Application of Ultrasonic Sensors for Determining the Height of Dynamic Two‐Phase Layers in Tray Columns}}},
  doi          = {{10.1002/cite.70087}},
  year         = {{2026}},
}

@article{64916,
  abstract     = {{The joining of dissimilar materials, such as steel and aluminum, entails significant challenges during thermal curing processes due to differing coefficients of thermal expansion. This study addresses the formation of “viscous fingering” instabilities in structural adhesive joints, which are induced by thermally driven relative displacements during the liquid phase of the adhesive. Using a component-like specimen “bridge specimen,” the dependency of this phenomenon on process temperature and structural stiffness (rivet distance) was characterized. Experimental results reveal that while the relative displacement scales cubically with the free buckling length, the resulting adhesive area reduction follows an exponential trend, leading to a loss of effective bond area of up to 79%, which significantly compromises the joint strength in automotive applications. To predict these process-induced defects, a thermo-chemo-viscoelastic-viscoplastic adhesive model implemented in LS-DYNA was applied. The model combines curing kinetics, viscoelastic relaxation, and pressure-dependent plasticity and features a geometric damage parameter (D) that captures the adhesive area reduction caused by viscous fingering as an exponential function of the accumulated normal strain in the liquid phase. This damage parameter, calibrated on base-specimen level, was transferred to the component geometry. The simulation demonstrated high predictive accuracy with a maximum deviation of the adhesive area reduction of 3.1% compared to experimental data. This validates the model’s capability to predict manufacturing-induced damage in complex hybrid structures solely based on thermal boundary conditions.}},
  author       = {{Al Trjman, Mohamad and Beule, Felix and Teutenberg, Dominik and Meschut, Gerson and Riese, Julia}},
  issn         = {{0021-8464}},
  journal      = {{The Journal of Adhesion}},
  keywords     = {{Adhesive area reduction, CED coating process, delta alpha problem, epoxy structural adhesive, influence of manufacture, multi-material design, numerical simulation (FEM), relative displacements, viscous fingering (saffman-taylor-instability).}},
  pages        = {{1--24}},
  publisher    = {{Informa UK Limited}},
  title        = {{{Experimental characterization and numerical analysis of the influence of the CED coating process on viscous fingering formation in hybrid-jointed mixed structures}}},
  doi          = {{10.1080/00218464.2026.2644394}},
  year         = {{2026}},
}

@inproceedings{65267,
  author       = {{Hollenhorst, Viola and Riese, Julia and Kenig, Eugeny Y.}},
  location     = {{Luzern, Schweiz}},
  title        = {{{Investigation of Surface Roughness Effects on Flow Patterns and Thermal Performance in Additively Manufactured Channels}}},
  year         = {{2026}},
}

@inproceedings{65446,
  author       = {{Franke, Patrick and Lutters, Nicole and Riese, Julia and Kenig, Eugeny}},
  location     = {{Luzern (CH)}},
  title        = {{{Identification of multiple steady states in reactive absorption columns equipped with structured packings}}},
  year         = {{2026}},
}

@inbook{65599,
  author       = {{Schlüter, Alexander and Krogbäumker, Luisa and Böse, Kevin and Riese, Julia}},
  booktitle    = {{Hydrogen and Bioenergy}},
  isbn         = {{9780443404931}},
  publisher    = {{Elsevier}},
  title        = {{{Opportunities and obstacles for industrial applications}}},
  doi          = {{10.1016/b978-0-443-40493-1.00019-x}},
  year         = {{2026}},
}

@article{65754,
  abstract     = {{<jats:title>ABSTRACT</jats:title>
                  <jats:p>
                    The integration of heat pumps offers a promising route for electrifying chemical processes and reducing CO
                    <jats:sub>2</jats:sub>
                    emissions. Their feasibility strongly depends on the temperature levels and the quantities of available heat sources and sinks, which can be influenced by adjusting process operating parameters to enhance integration potential. The number and quality of these sources and sinks also determine suitable heat pump configurations and therefore the technical and economic viability of implementation. In addition, refrigerant selection is a critical factor, as it is restricted by regulations such as the F‐Gas Regulation. This study investigates how different operating parameters affect the integration potential of various heat pump configurations in a CO
                    <jats:sub>2</jats:sub>
                    absorption process using MEA as solvent. Furthermore, economic evaluations are carried out considering different electricity price scenarios and allowable refrigerants.
                  </jats:p>}},
  author       = {{Wloch, Johannes and Grünewald, Marcus and Riese, Julia}},
  issn         = {{0009-286X}},
  journal      = {{Chemie Ingenieur Technik}},
  publisher    = {{Wiley}},
  title        = {{{Matching Heat Pump Configurations and Process Parameters for Cost‐Minimal Heat‐Integrated CO<sub>2</sub>-Capturing Process}}},
  doi          = {{10.1002/cite.70131}},
  year         = {{2026}},
}

@inproceedings{66007,
  abstract     = {{<jats:p>The reduction of CO2-emissions in the chemical industry is essential to meet European climate targets. Particularly, the reliance on fossil fuels for process heat supply is a key factor for CO2-emissions. Electrically driven compression heat pumps are a promising option to reduce fossil fuel consumption by upgrading low-temperature waste heat to a higher temperature level, provided that low-carbon electricity is available. However, the integration of heat pumps into chemical utility systems remains a challenge due to economic constraints and the high complexity associated with site-wide heat integration and retrofit of existing structures. This work presents a mixed-integer linear programming (MILP) approach for the optimization of utility systems with integrated heat pumps. To address computational complexity, candidate utility temperature levels are pre-selected, and feasible heat pump coefficients of performance (COP) are precomputed. The framework is applied to both greenfield and retrofit scenarios for a synthetic case study consisting of 400 process streams. In the greenfield scenario, optimal utility temperature levels and heat pump integration configurations are identified. For the retrofit scenario, temperature levels of an existing utility system are modified to reduce total annual costs (TAC). Additionally, sensitivity analysis is conducted to assess the influence of key economic and environmental parameters. The presented case studies demonstrate short solution times, highlighting the suitability of the proposed framework for screening studies and systematic sensitivity analyses in early-stage design and retrofit applications.</jats:p>}},
  author       = {{Hochhaus, Thorben and Grünewald, Marcus and Riese, Julia}},
  booktitle    = {{Systems and Control Transactions}},
  issn         = {{2818-4734}},
  publisher    = {{PSE Press}},
  title        = {{{Optimization of Site-wide Heat-Integrated Utility Systems with Heat Pumps using MILP}}},
  doi          = {{10.69997/sct.152209}},
  volume       = {{6}},
  year         = {{2026}},
}

@inproceedings{66008,
  abstract     = {{<jats:p>Heat pumps offer the possibility of reducing CO2-emissions in the chemical industry. However, the integration of heat pumps, especially in non-continuous processes, faces several challenges. Energy storage facilitates a way to enhance heat integration by providing a continuous supply of heat flows. By doing so, the question arises as to whether this implementation should be applied to the process or to the utility level. At the process level, there is usually more freedom, as one is not bound by the existing temperature levels of the utility system, which are mostly difficult to retrofit. Therefore, this study presents an approach that generates heat integration concepts at the process level based on two different criteria. These criteria influence which process streams are grouped for a storage implementation and therefore influence the heat integration. The aim is to maintain the heat flows as continuous as possible by integrated heat storages. Finally, the possible heat integration concept is evaluated in terms of energy efficiency by a know method for continuous process streams, here the pinch analysis.</jats:p>}},
  author       = {{Wloch, Johannes and Grünewald, Marcus and Riese, Julia}},
  booktitle    = {{Systems and Control Transactions}},
  issn         = {{2818-4734}},
  publisher    = {{PSE Press}},
  title        = {{{Development of a methodology for heat pump-based heat integration in batch processes}}},
  doi          = {{10.69997/sct.140728}},
  volume       = {{6}},
  year         = {{2026}},
}

@article{66059,
  author       = {{Kapustenko, Petro and Tovazhnyanskyy, Leonid and Arsenyeva, Olga and Riese, Julia and Varbanov, Petar Sabev}},
  issn         = {{1290-0729}},
  journal      = {{International Journal of Thermal Sciences}},
  publisher    = {{Elsevier BV}},
  title        = {{{Selection of the mini- and micro-channels geometry for improved heat recuperation in specific industrial conditions}}},
  doi          = {{10.1016/j.ijthermalsci.2026.111129}},
  volume       = {{229}},
  year         = {{2026}},
}

@article{66554,
  author       = {{Arsenyeva, Olga and Breuer, Niklas and Riepin, Yevhenii and Grünewald, Marcus and Riese, Julia}},
  issn         = {{2451-9049}},
  journal      = {{Thermal Science and Engineering Progress}},
  publisher    = {{Elsevier BV}},
  title        = {{{Method for estimation of plate heat exchanger design for a flexible methanol–water distillation column}}},
  doi          = {{10.1016/j.tsep.2026.104855}},
  year         = {{2026}},
}

@article{66764,
  abstract     = {{<jats:title>ABSTRACT</jats:title>
                  <jats:p>
                    Methane, synthesized from renewable hydrogen and biogenic CO
                    <jats:sub>2</jats:sub>
                    , can be a part of the transformation towards renewable energy carriers. A major engineering challenge is the optimization of the fixed‐bed reactor design, specifically the heat dissipation in regions of high reaction heat release. A mitigation concept is the introduction of inert material into the fixed bed, called catalyst dilution. In this study, a 1D continuity model is presented, which aims to predict catalyst superheating. This model is used in an exploratory study to identify system sensitivity and optimization parameters. Subsequently, an optimization framework for improving the reactor design is tested, resulting in a 148‐K reduction in peak catalyst temperature when using a 33.3 vol% catalyst dilution.
                  </jats:p>}},
  author       = {{Schmücker, Torben and Riese, Julia}},
  issn         = {{0009-286X}},
  journal      = {{Chemie Ingenieur Technik}},
  publisher    = {{Wiley}},
  title        = {{{Model‐Based Optimization Framework for Catalyst Dilution Applications in CO2‐Methanation Reactors}}},
  doi          = {{10.1002/cite.70162}},
  year         = {{2026}},
}

@article{66444,
  author       = {{Dechert, Christopher and Riese, Julia and Kenig, Eugeny}},
  issn         = {{0009-2509}},
  journal      = {{Chemical Engineering Science}},
  publisher    = {{Elsevier BV}},
  title        = {{{A comprehensive numerical study of the wetting behavior in structured packings with a direct consideration of the packing microstructure}}},
  doi          = {{10.1016/j.ces.2026.124635}},
  year         = {{2026}},
}

@article{58672,
  author       = {{Al Trjman, Mohamad and Salten, Alexander Heinrich Johannes and Beule, Felix and Teutenberg, Dominik and Meschut, Gerson and Riese, Julia and Kenig, Eugeny}},
  issn         = {{0143-7496}},
  journal      = {{International Journal of Adhesion and Adhesives}},
  publisher    = {{Elsevier BV}},
  title        = {{{Viscous fingering in adhesive bonding}}},
  doi          = {{10.1016/j.ijadhadh.2025.103960}},
  volume       = {{139}},
  year         = {{2025}},
}

@inproceedings{58761,
  author       = {{Dechert, Christopher and Riese, Julia and Franke, Patrick}},
  location     = {{Bochum}},
  title        = {{{Untersuchung zur Vergleichbarkeit von verschiedenen Methoden zur Bestimmung der effektiven Phasengrenzflächen}}},
  year         = {{2025}},
}

@inproceedings{58762,
  author       = {{Dechert, Christopher and Riese, Julia}},
  location     = {{Bochum}},
  title        = {{{Bewertung des Potentiales der Elektrobenetzung für Trennkolonnen}}},
  year         = {{2025}},
}

@inproceedings{60494,
  abstract     = {{Pillow-plate heat exchangers (PPHEs) represent a viable alternative to conventional shell-and-tube and plate heat exchangers. The waviness of their channels intensifies fluid mixing in the boundary layers and facilitates heat transfer. Applying secondary surface structuring can further enhance the overall thermo-hydraulic performance of PPHEs, thus increasing their competitiveness against conventional heat exchangers. In this work, streamlined secondary structures applied on the PPHE surface were studied numerically to explore their potential in enhancing near-wall fluid mixing. Computational fluid dynamics (CFD) simulations of single-phase turbulent flow in the inner PPHE channel were performed and pressure drop, heat transfer coefficients, and overall thermo-hydraulic efficiency were determined. The simulation results clearly demonstrate a favourable influence of secondary structuring on the heat transfer performance of PPHEs.</jats:p>}},
  author       = {{Afsahnoudeh, Reza and Riese, Julia and Kenig, Eugeny Y.}},
  booktitle    = {{Systems and Control Transactions}},
  issn         = {{2818-4734}},
  publisher    = {{PSE Press}},
  title        = {{{Thermo-Hydraulic Performance of Pillow-Plate Heat Exchangers with Streamlined Secondary Structures: A Numerical Analysis}}},
  doi          = {{10.69997/sct.178665}},
  volume       = {{4}},
  year         = {{2025}},
}

@inproceedings{60493,
  abstract     = {{Heat pumps play a crucial role in decarbonizing the chemical industry. The integration and sizing of heat pumps in chemical processes is a challenging task in multi-product chemical processes due to the fluctuating waste heat supply and heat demand. Integrating heat pumps may require a retrofit of the utility system. Mathematical optimization is a useful tool to tackle this challenge by enabling the analysis of correlation between relevant system parameters and equipment sizing. This study demonstrates the utilization of mathematical optimization and parameter studies for utility system equipment sizing addressing fluctuating heat supply and demand profiles.</jats:p>}},
  author       = {{Hochhaus, Thorben and Wloch, Johannes and Grünewald, Marcus and Riese, Julia}},
  booktitle    = {{Systems and Control Transactions}},
  issn         = {{2818-4734}},
  publisher    = {{PSE Press}},
  title        = {{{A Data-Driven Conceptual Approach to Heat Pump Sizing in Chemical Processes with Fluctuating Heat Supply and Demand}}},
  doi          = {{10.69997/sct.196662}},
  volume       = {{4}},
  year         = {{2025}},
}

@inproceedings{56194,
  author       = {{Afsahnoudeh, Reza and Riese, Julia and Kenig, Eugeny Y.}},
  booktitle    = {{World Congress on Mechanical, Chemical, and Material Engineering}},
  issn         = {{2369-8136}},
  location     = {{Barcelona}},
  publisher    = {{Avestia Publishing}},
  title        = {{{A Numerical Analysis of Thermo-Hydraulic Performance of Pillow-Plate Heat Exchangers with Ellipsoidal Secondary Structures}}},
  doi          = {{10.11159/htff24.145}},
  year         = {{2024}},
}