TY - CONF AU - König, Jonas AU - Malberg, Simon AU - Martens, Martin AU - Niehaus, Sebastian AU - Krohn-Grimberghe, Artus AU - Ramaswamy, Arunselvan ID - 24141 T2 - Science and Information Conference TI - Multi-stage reinforcement learning for object detection ER - TY - JOUR AU - Knoke, Torben AU - Kronberg, Alexander AU - Glushenkov, Maxim AU - Kenig, Eugeny ID - 24272 IS - 5 JF - Applied Thermal Engineering SN - 1359-4311 TI - On the design of heat exchanger equipment for novel-type isobaric expansion engines VL - 167 ER - TY - CONF AU - Malatyali, Hatice AU - Schöppner, Volker ID - 24319 T2 - 27. Fachtagung Technomer TI - Untersuchung des Dosierverhaltens von Carbonfaserrezyklaten für den Einsatz im gleichläufigen Doppel-schneckenextruder ER - TY - CONF AU - Malatyali, Hatice AU - Schöppner, Volker AU - Tillmann, Wolfgang AU - Kokalj, David ID - 24322 T2 - SPE ANTEC TI - Deveploment of thin film sensors: The influence of layer variation on the measurement quality for inline melt temperature measurements ER - TY - CONF AU - Vogtschmidt, Sascha AU - Schöppner, Volker ID - 24326 TI - Vibration welding of components with angled areas in the direction of vibration ER - TY - CONF AB - Liquid atomization is expected to be a key process in Flame Spray Pyrolysis, as it determines the primary droplet size and velocity distribution, which represent initial conditions for flame shape and temperature field. A well-defined manipulation of atomization may be achieved by variation of nozzle geometry, injection parameter or fluid properties. However, change of fluid properties, e.g. varying solvents or increasing the precursor concentration, also influences the final particle properties. In this work, the influence of precursor concentration on fluid properties, spray and particle formation in Flame Spray Pyrolysis is experimentally investigated. High-speed shadowgraphy and Phase-Doppler measurements are conducted in a semi-closed combustion chamber with a well-defined burner geometry (SpraySyn burner) that is based on a coaxial atomization principle. By adding precursor to the flammable solvent, resulting spray characteristics, flame shape and appearance are changed in color, shape and mean droplet size distribution. Compared to resulting mean droplet sizes of pure solvent mixtures (D32, 22 μm), mean droplet sizes in the center of the precursor flame at 30 mm above the burner are generally smaller (D32, 18 μm). Persisting high share of small droplets in the droplet size distribution are presented, that presumably origin from an accumulation of metal organic precursor at the droplet surface during combustion, that acts as a diffusive barrier for high volatility solvent and thus reduces droplet evaporation. Sufficiently high above the nozzle exit, increasing the precursor concentration does not affect the radial distribution of mean droplet sizes but leads to increased mean particle sizes. More precursor presumably leads to higher concentrations of prime particles in the flame, thus probability of particle collusion and agglomeration. High-speed imaging at nozzle exit revealed random fluctuations of initial jet diameter, paired with jet axis shifting around 1000 Hz. These superposed fluctuations determine the initial conditions for atomization, induce pulsations in the flame and thus initiate the entire chain of the particle synthesis process. AU - Bieber, M. AU - Tischendorf, R. AU - Reddemann, M. AU - Schmid, H.-J. AU - Kneer, R. ID - 24502 KW - FSP KW - nanoparticle synthesis KW - in situ measurements TI - Influence of precursor concentration on spray and particle formation in flame spray pyrolysis ER - TY - GEN AU - Menge, Dennis AU - Walter, Rolf AU - Schmid, Hans-Joachim AU - Breuer, Ulf Paul ID - 24628 TI - FVA-Nr. 813 I - Generative Verfahren zur Herstellung von Polymerbauteilen VL - 1338 ER - TY - JOUR AB - Prerequisite for an efficient cooling energy system is the knowledge and optimal combination of different operating conditions of individual compression and free cooling chillers. The performance of cooling systems depends on their part-load performance and their condensing temperature, which are often not continuously measured. Recorded energy data remain unused, and manufacturers’ data differ from the real performance. For this purpose, manufacturer and real data are combined and continuously adapted to form part-load chiller models. This study applied a predictive optimization algorithm to calculate the optimal operating conditions of multiple chillers. A sprinkler tank offers the opportunity to store cold-water for later utilization. This potential is used to show the load shifting potential of the cooling system by using a variable electricity price as an input variable to the optimization. The set points from the optimization have been continuously adjusted throughout a dynamic simulation. A case study of a plastic processing company evaluates different scenarios against the status quo. Applying an optimal chiller sequencing and charging strategy of a sprinkler tank leads to electrical energy savings of up to 43%. Purchasing electricity on the EPEX SPOT market leads to additional costs savings of up to 17%. The total energy savings highly depend on the weather conditions and the prediction horizon. AU - Peesel, Ron-Hendrik AU - Schlosser, Florian AU - Meschede, Henning AU - Dunkelberg, Heiko AU - Walmsley, Timothy ID - 24632 JF - Energies SN - 1996-1073 TI - Optimization of Cooling Utility System with Continuous Self-Learning Performance Models ER - TY - JOUR AU - Schlosser, Florian AU - Seevers, Jan-Peter AU - Peesel, Ron-Hendrik AU - Walmsley, Timothy Gordon ID - 24633 JF - Energy SN - 0360-5442 TI - System efficient integration of standby control and heat pump storage systems in manufacturing processes ER - TY - JOUR AB - For increased total site heat integration, the optimal sizing and robust operation of a heat recovery loop (HRL) are prerequisites for economic efficiency. However, sizing based on one representative time series, not considering the variability of process streams due to their discontinuous operation, often leads to oversizing. The sensitive evaluation of the performance of an HRL by Monte Carlo (MC) simulation requires sufficient historical data and performance models. Stochastic time series are generated by distribution functions of measured data. With these inputs, one can then model and reliably assess the benefits of installing a new HRL. A key element of the HRL is a stratified heat storage tank. Validation tests of a stratified tank (ST) showed sufficient accuracy with acceptable simulation time for the variable layer height (VLH) multi-node (MN) modelling approach. The results of the MC simulation of the HRL system show only minor yield losses in terms of heat recovery rate (HRR) for smaller tanks. In this way, costs due to oversizing equipment can be reduced by better understanding the energy-capital trade-off. AU - Schlosser, Florian AU - Peesel, Ron-Hendrik AU - Meschede, Henning AU - Philipp, Matthias AU - Walmsley, Timothy AU - Walmsley, Michael AU - Atkins, Martin ID - 24634 JF - Energies SN - 1996-1073 TI - Design of Robust Total Site Heat Recovery Loops via Monte Carlo Simulation ER - TY - CONF AU - Schlosser, Florian AU - Arpagaus, Cordin AU - Walmsley, Timothy G. ID - 24638 T2 - Chemical Engineering Transactions TI - Heat Pump Integration by Pinch Analysis for Industrial Applications: A Review VL - 76 ER - TY - CONF AU - Seevers, Jan-Peter AU - Schlosser, Florian ID - 24639 T2 - Chemical Engineering Transactions TI - Integration of Heat Pump Storage Systems in Manufacturing Systems via Data Farming and Monte Carlo Simulation VL - 76 ER - TY - CONF AU - Selleneit, Volker AU - Stockl, Martin AU - Philipp, Matthias AU - Mast, Tanja AU - Schlosser, Florian ID - 24640 T2 - Chemical Engineering Transactions TI - System Efficiency Rating of Industrial Utilities in Electricity Grids with a high share of Variable Renewable Energies VL - 76 ER - TY - CONF AU - Moritzer, Elmar AU - Mühlhoff, Frederik Marvin AU - Nordmeyer, T. AU - Böhnke, Birte AU - Krampe, Erhard AU - Asad, Salman ID - 25638 T2 - Eröffnung Plasma-Campus bei Plasmatreat GmbH TI - InMould-Plasma ER - TY - JOUR AU - Moritzer, Elmar AU - Jilg, J. AU - Sibbe, N. ID - 25639 JF - PU MAGAZIN - International TI - Investigation of the bond strength between injection moulded TPU and a reactive, castable polyurethane mass (PU) ER - TY - JOUR AU - Moritzer, Elmar AU - Jilg, J. AU - Sibbe, N. ID - 25640 IS - 4 JF - TPE Magazine international TI - Investigation of the bond strength between injection moulded TPU and a reactive, castable polyurethane mass (PU) ER - TY - CONF AU - Moritzer, Elmar AU - Hüttner, Matthias AU - Krassmann, Dimitri AU - Wittke, Marius ID - 25689 T2 - Werkstoffwoche TI - Lebensdauer von Composites und Composite-Metall-Hybridverbindungen ER - TY - BOOK AU - Tobias Jenert, Gabi Reinmann, Tobias Schmohl ID - 25734 KW - Hochschulbildung KW - Bildungsforschung KW - Hochschuldidaktik KW - Hochschulbildung KW - Hochschuldidaktik KW - Forschung KW - Lehren KW - Hochschule KW - Lehre KW - Lernen SN - 978-3-658-20309-2 TI - Hochschulbildungsforschung. Theoretische, methodologische und methodische Denkanstöße für die Hochschuldidaktik ER - TY - JOUR AU - Brahm, T. AU - Jenert, T. ID - 25735 IS - 4 JF - Journal of Management Education TI - Untangling Faculty Misinformation From an Educational Perspective: Rejoinder to ?The Menace of Misinformation: Faculty Misstatements in Management Education and Their Consequences? VL - 43 ER - TY - CONF AU - Schöppner, Volker AU - Bayazian, H. AU - Yadegari, Ali ID - 25736 T2 - 77th Annual Technical Conference of the Society of Plastics Engineers (ANTEC) TI - Morphology Development in LLDPE Stretch Films Prepared with Different Cast Film Process Parameters ER -