Options
Schuh, Sebastian
Loading...
Official Name
Schuh, Sebastian
Main Affiliation
Akademische Titel
DI Dr., BSc
Email
sebastian.schuh@forschung-burgenland.at
ORCID
Scopus Author ID
56640905500
Status
staff
Research Outputs
Now showing 1 - 10 of 13
- Publication
144 961 - PublicationDual Fuel Reaction Mechanism 2.0 including NOx Formation and Laminar Flame Speed Calculations Using Methane/Propane/n-Heptane Fuel BlendsThis study presents the further development of the TU Wien dual fuel mechanism, which was optimized for simulating ignition and combustion in a rapid compression expansion machine (RCEM) in dual fuel mode using diesel and natural gas at pressures higher than 60 bar at the start of injection. The mechanism is based on the Complete San Diego mechanism with n-heptane extension and was attuned to the RCEM measurements to achieve high agreement between experiments and simulation. This resulted in a specific application area. To obtain a mechanism for a wider parameter range, the Arrhenius parameter changes performed were analyzed and updated. Furthermore, the San Diego nitrogen sub-mechanism was added to consider NOx formation. The ignition delay time-reducing effect of propane addition to methane was closely examined and improved. To investigate the propagation of the flame front, the laminar flame speed of methane–air mixtures was simulated and compared with measured values from literature. Deviations at stoichiometric and fuel-rich conditions were found and by further mechanism optimization reduced significantly. To be able to justify the parameter changes performed, the resulting reaction rate coefficients were compared with data from the National Institute of Standards and Technology chemical kinetics database.
140Scopus© Citations 2 - PublicationSimulation of a Magnetocaloric Heat Pump in Building TechnologyIncreased quality of building envelopes in the last decades leads to decreased heating demands of new buildings and therefore heating devices with lower heating powers are needed. !ere is a lack of suitable solutions in the heating market in the small power range, which can cover small heating loads decentral without distribution losses. In the presented study, the potential of magnetocaloric heating is investigated. Apart from the advantage that no climate-relevant gases are used compared to commonly used compression heat pumps, this technology is suitable for covering low heating requirements. A cornerstone of the investigation is the development of a programme for simulating the behaviour of a building-integrated magnetocaloric heat pump. Target is to determine the effect of the change in basic properties such as the nature of the magnetocaloric material, the magnetic flux density, the working frequency, etc., but also to determine the influence of building parameters on the overall efficiency of the heating system.
122 132 - PublicationA Novel Dual Fuel Reaction Mechanism for Ignition in Natural Gas–Diesel CombustionIn this study, a reaction mechanism is presented that is optimized for the simulation of the dual fuel combustion process using n-heptane and a mixture of methane/propane as surrogate fuels for diesel and natural gas, respectively. By comparing the measured and calculated ignition delay times (IDTs) of different homogeneous methane–propane–n-heptane mixtures, six different n-heptane mechanisms were investigated and evaluated. The selected mechanism was used for computational fluid dynamics (CFD) simulations to calculate the ignition of a diesel spray injected into air and a natural gas–air mixture. The observed deviations between the simulation results and the measurements performed with a rapid compression expansion machine (RCEM) and a combustion vessel motivated the adaptation of the mechanism by adjusting the Arrhenius parameters of individual reactions. For the identification of the reactions suitable for the mechanism adaption, sensitivity and flow analyzes were performed. The adjusted mechanism is able to describe ignition phenomena in the context of natural gas–diesel, i.e., dual fuel combustion.
127Scopus© Citations 5 - PublicationExperimental Investigation and Benchmark Study of Oxidation of Methane–Propane–n-Heptane Mixtures at Pressures up to 100 bar(MDPI, 2019)
; 144Scopus© Citations 12 - PublicationNew technologies for ammonium dinitramide based monopropellant thrusters – The project RHEFORM(Elsevier, 2018)
; 121Scopus© Citations 51 - PublicationAnalysis of Thermoelectric Heat Pumps for Applications in Buildings(COBEE conference, 2018-02)
; ; ; ; 131 - PublicationPerformance Comparison between Extruded and Printed Ceramic Monoliths for Catalysts(EUCASS, 2017-07)
; 118 - PublicationEfficient Blue-Light-Emitting Polymer Heterostructure Devices: The Fabrication of Multilayer Structures from Orthogonal Solvents(Wiley, 2010)
; 113Scopus© Citations 88 - PublicationExperimental Analysis of a Thermoelectric Water-to-Water Heat Pump(12th Conference On Sustainable Development of Energy, Water and Environment Systems, 2017)
; ; ; ; 115