TY - JOUR AU - Grabo, Matti AU - Weber, Daniel AU - Paul, Andreas AU - Klaus, Tobias AU - Bermpohl, Wolfgang AU - Krauter, Stefan AU - Kenig, Eugeny ID - 21519 JF - CHEMICAL ENGINEERING TRANSACTIONS SN - 978-88-95608-73-0 TI - Numerical Investigation of the Temperature Distribution in PCM-integrated Solar Modules VL - 76 ER - TY - CONF AU - Grabo, Matti AU - Weber, Daniel AU - Paul, Andreas AU - Klaus, Tobias AU - Bermpohl, Wolfgang AU - Kenig, Eugeny ID - 21521 TI - Numerische Untersuchung der Temperaturverteilung in PCM-integrierten Solarmodulen ER - TY - CONF AU - Grabo, Matti AU - Weber, Daniel AU - Paul, Andreas AU - Klaus, Tobias AU - Bermpohl, Wolfgang AU - Krauter, Stefan AU - Kenig, Eugeny ID - 21520 TI - Entwicklung eines thermischen 1D-Simulationsmodells zur Bestimmung der Temperaturverteilung in Solarmodulen ER - TY - CONF AB - Wie jedes technische System unterliegen auch Haushaltskältegeräte einer alterungsbedingten Degeneration, die zu einem Anstieg der Energieaufnahme über die Lebensdauer dieser Geräte führt. Ursache hierfür sind verschiedene Effekte, die in dem vom BMWi geförderten Projekt ALGE untersucht werden. Aus den so gewonnenen Erkenntnissen sollen dann degenerationsbeständigere Haushaltskältegeräte entwickelt werden. Eine wichtige Alterungsursache ist der Anstieg der Wärmeleitfähigkeit des PUR-Schaums der Gehäuseisolierung. Zur Bestimmung dieses Einflusses auf die Energieaufnahme ist die Entwicklung neuer Messmethoden notwendig, die zerstörungsfrei sein und den realen Anwendungsbedingungen möglichst nahekommen sollen. Dazu wurde eine Wärmesenke entwickelt, die den Geräteinnenraum unabhängig vom Kältekreislauf abkühlt. Die Wärmesenke ist als Eiswasserbehälter ausgeführt, sodass die Schmelzenthalpie des Eises die durch die Isolierung in den Geräteinnenraum einfallende Wärme aufnimmt. Durch die Bestimmung der Abtauzeit einer bestimmten Eismenge kann so der alterungsbeeinflusste 𝑘∙𝐴-Wert des Gehäuses von Haushaltskältegeräten bestimmt werden. AU - Paul, Andreas AU - Moczarski, Lukas AU - Gieselmann, Mirko AU - Reineke, Michael AU - Elsner, Andreas AU - Baumhögger, Elmar AU - Sonnenrein, Gerrit AU - Vrabec, Jadran ID - 21518 SN - 978-3-932715-52-5 TI - Bestimmung von Wärmeverlusten in Haushaltskältegeräten ER - TY - JOUR AU - Grabo, Matti AU - Weber, Daniel AU - Paul, Andreas AU - Klaus, Tobias AU - Bermpohl, Wolfgang AU - Krauter, Stefan AU - Kenig, Eugeny ID - 15250 JF - Chemical Engineering Transactions SN - 2283-9216 TI - Numerical Investigation of the Temperature Distribution in PCM-integrated Solar Modules ER - TY - JOUR AU - Thol, Monika AU - Dubberke, Frithjof H. AU - Baumhögger, Elmar AU - Span, Roland AU - Vrabec, Jadran ID - 13160 JF - Journal of Chemical & Engineering Data SN - 0021-9568 TI - Speed of Sound Measurements and a Fundamental Equation of State for Hydrogen Chloride ER - TY - JOUR AU - Thol, Monika AU - Dubberke, Frithjof H. AU - Baumhögger, Elmar AU - Span, Roland AU - Vrabec, Jadran ID - 13163 JF - Journal of Chemical & Engineering Data SN - 0021-9568 TI - Speed of Sound Measurements and a Fundamental Equation of State for Hydrogen Chloride ER - TY - GEN AU - Rutkai, Gábor ID - 42162 TI - Large Scale Thermodynamic Data Generation with Molecular Simulation ER - TY - CONF AU - Claes, Leander AU - Chatwell, René Spencer AU - Vrabec, Jadran AU - Henning, Bernd ID - 6556 SN - 978-3-9816876-4-4 T2 - PROCEEDINGS -- AMA Conferences 2017 TI - A Spectral Approach to Acoustic Absorption Measurement ER - TY - JOUR AU - Dubberke, Frithjof H. AU - Linnemann, Matthias AU - Abbas, Wameedh Khider AU - Baumhögger, Elmar AU - Priebe, Klaus-Peter AU - Roedder, Maximilian AU - Neef, Matthias AU - Vrabec, Jadran ID - 13161 JF - Applied Thermal Engineering SN - 1359-4311 TI - Experimental setup of a cascaded two-stage organic Rankine cycle ER - TY - JOUR AU - Nikolaychuk, Pavel Anatolyevich AU - Linnemann, Matthias AU - Muñoz-Muñoz, Y. Mauricio AU - Baumhögger, Elmar AU - Vrabec, Jadran ID - 13162 JF - Chemistry Letters SN - 0366-7022 TI - Experimental and Computational Study on the Solubility of Argon in Propan-2-ol at High Temperatures ER - TY - THES AU - Dubberke, Frithjof ID - 42138 TI - Thermophysical properties from experimental speed of sound measurements for working fluids in organic Rankine cycles ER - TY - THES AU - Köster, Andreas ID - 42139 TI - Molekulare Simulation als effizientes Werkzeug zur Bestimmung thermodynamischer Stoffdaten ER - TY - THES AB - Lightweight materials play an ever growing role in today's world. Saving on the mass of a machine will usually translate into a lower energy consumption. However, lightweight applications are prone to develop performance problems due to vibration induced by the operation of the machine. The Fraunhofer Institute for Manufacturing Technology and Advanced Materials in Dresden conducts research into the damping properties of composite materials. They are experimenting with hollow, particle filled spheres embedded in the lightweight material. Such a system is the technical motivation of this thesis. Ultimately, a numerical experiment to derive the coefficient of restitution is required. The simulation developed in this thesis is based on a discrete element method to track the individual particle and sphere trajectories. Based on a potential based approach for the particle interactions deployed in molecular dynamics, the behavior of the particles can be controlled effectively. The simulated volume is using reflecting boundaries and encloses the hollow sphere. In this work, a highly flexible memory structure was used with a linked cell approach to cope with the highly flexible mass of particles. This allows for a linear complexity of the method in regard to the particle number by reducing the computational overhead of the interaction computation. Multiple numerical experiments show the great effect the particles have on the damping behavior of the system. AU - Steinle, Tobias ID - 33 TI - Modeling and simulation of metallic, particle-damped spheres for lightweight materials ER - TY - JOUR AU - Japs, Ewald AU - Sonnenrein, Gerrit AU - Krauter, Stefan AU - Vrabec, Jadran ID - 6655 JF - Solar Energy TI - Experimental study of phase change materials for photovoltaic modules: Energy performance and economic yield for the EPEX spot market VL - 140 ER - TY - JOUR AU - Dubberke, Frithjof H. AU - Riepold, Markus AU - Baumhögger, Elmar AU - Vrabec, Jadran ID - 13164 JF - Journal of Chemical & Engineering Data SN - 0021-9568 TI - Speed of Sound of Oxygen in Supercritical States up to 500 K and 100 MPa ER - TY - THES AU - Miroshnichenko, Svetlana ID - 42137 SN - 9783843928281 TI - Molecular modeling and simulation for industrial applications ER - TY - JOUR AU - Sonnenrein, G. AU - Baumhögger, Elmar AU - Elsner, A. AU - Fieback, K. AU - Morbach, A. AU - Paul, A. AU - Vrabec, J. ID - 13165 JF - International Journal of Refrigeration SN - 0140-7007 TI - Copolymer-bound phase change materials for household refrigerating appliances: experimental investigation of power consumption, temperature distribution and demand side management potential ER - TY - JOUR AU - Dubberke, Frithjof H. AU - Baumhögger, Elmar AU - Vrabec, Jadran ID - 13166 JF - Review of Scientific Instruments SN - 0034-6748 TI - Burst design and signal processing for the speed of sound measurement of fluids with the pulse-echo technique ER - TY - JOUR AB - This study presents the results of an experimental investigation of the influence of latent thermal heat storage elements on the power consumption as well as the temperature distribution of commercial household refrigerators.Two evaporator types and a standard wireand- tube condenser are equipped with copolymer-bound phase change materials (PCM) and the performance is determined under standard conditions. The results show that refrigerating appliances equipped with PCM can be optimized through modifications of the control strategy to achieve different targets: (a) Power consumption can be significantly reduced by increasing the evaporator and decreasing the condenser temperature. (b) Temperature fluctuations in the refrigerator’s fresh-food compartment during the cooling cycle can be reduced from 4 °C to 0.5 °C. (c) The cooling cycle duration can be tripled without compromising the fresh-food compartment conditions. The latter may help to meet the growing demand for balancing power consumption to stabilize the power grid, e.g. if the share of highly fluctuating, sustainable energy supply is large. AU - Sonnenrein, Gerrit AU - Baumhögger, Elmar AU - Elsner, Andreas AU - Fieback, K. AU - Morbach, A. AU - Paul, Andreas AU - Vrabec, J. ID - 21516 JF - International Journal of Refrigeration SN - 0140-7007 TI - Copolymer-bound phase change materials for household refrigerating appliances: experimental investigation of power consumption, temperature distribution and demand side management potential VL - 60 ER -