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 -