A5012175981- Advanced Combustion Engine Technologies
- Combustion and flame dynamics
- Catalytic Processes in Materials Science
- Rocket and propulsion systems research
- Biodiesel Production and Applications
- Combustion and Detonation Processes
- Advanced Aircraft Design and Technologies
- Heat transfer and supercritical fluids
- Radiative Heat Transfer Studies
- Chemical Thermodynamics and Molecular Structure
- Vehicle emissions and performance
- Catalysis and Oxidation Reactions
- Energetic Materials and Combustion
- Phase Equilibria and Thermodynamics
- Atmospheric chemistry and aerosols
- Thermochemical Biomass Conversion Processes
- Chemical and Physical Properties in Aqueous Solutions
- Catalysis for Biomass Conversion
- Hybrid Renewable Energy Systems
- Arts, Culture, and Music Studies
- High Temperature Alloys and Creep
- Scientific Computing and Data Management
- Ammonia Synthesis and Nitrogen Reduction
- High-Temperature Coating Behaviors
- Distributed and Parallel Computing Systems
Deutsches Zentrum für Luft- und Raumfahrt e. V. (DLR)
2015-2024
Institut für Handelsforschung
2020
University of Cologne
2020
HTW Berlin - University of Applied Sciences
2017-2019
Oel-Waerme-Institut
2009
University of Stuttgart
2000
This paper summarizes the findings of a detailed assessment synthetic, electricity-based fuels for use in aviation, shipping, and road transport. The considered correspond to most promising alternatives that were analyzed as part German research project BEniVer (Begleitforschung Energiewende im Verkehr—Accompanying Research Energy Transition Transport) initiated by Federal Ministry Economic Affairs Climate Action (BMWK). Focusing on usage, infrastructure, ecological analyses, several e-fuels...
Within this work the effects of blending oxymethylene ethers (OMEn) to a diesel surrogate (50 mol% n-dodecane, 30 farnesane, and 20 1-methylnaphthalene) were investigated by performing two different types experiments: measurements sooting propensity laminar burning velocity, each in premixed flames. For propensity, OME3, OME4, OME5 considered as compounds—each mass fractions 10%, 20%, 30%. The was found depend strongly on OMEn grade but not its chain length. In addition, effect velocity...
In 2014 DLR started research activities focused on premixed monopropellants consisting of nitrous oxide and hydrocarbons. Those propellants offer promising characteristics as they are non-toxic, deliver a high Isp consist components with low cost could simplify propulsion system due to self-pressurized operation. Initially chose mixture (N2O) ethene (C2H4). the course project, ethane (C2H6) was included activities. The part DLR's Future Fuels project divided into five main parts: 1)...
Abstract Aromatic compounds occurring naturally in jet fuels are precursors for the formation of soot exhaust gas engines. Directly emitted cruising altitude, particles lead to contrails and clouds influencing radiation balance atmosphere. Hence, a detailed knowledge on effect aromatics sooting behavior is great importance, especially development alternative synthetic fuels. Investigations propensity influenced by molecular structure concentration diverse aromatic contained fossil aviation...
Abstract Oxymethylene ethers (OMEn, n = 1–5) are a promising class of synthetic fuels that have the potential to be used as additives or substitutes diesel in compression ignition engines. A comprehensive understanding their combustion properties is required for safe and efficient utilization. In this study, results combined experimental modeling work on oxidation OME2 reported: (i) Ignition delay time measurements stoichiometric OME2/synthetic air mixtures diluted 1:5 with nitrogen using...
Laminar burning velocities were measured for the neat fuel components n-dodecane, cyclohexane, isooctane, toluene and npropylbenzene jet-fuel (Jet A-1).The measurements performed using cone-angle method at a preheat temperature of 473 K pressures 0.1 MPa, 0.3 MPa 0.6 MPa.It is shown that nearly all fuels have similar pressure dependence velocity Jet A-1 in between components.Also structural differences among n-and isoalkanes are explained.In addition, comparison to experimental data from...
Over the last years, global concerns about energy security and climate change have resulted in many efforts focusing on potential utilization of nonpetroleum-based, i.e., bioderived, fuels. In this context, n-butanol has recently received high attention because it can be produced sustainably. A comprehensive knowledge its combustion properties is inevitable to ensure an efficient smart use if selected as a future carrier. present work, two major characteristics, here laminar flame speeds...
Alcohol-to-Jet -Synthetic Paraffinic Kerosene (AtJ-SPK) is an alternative fuel made from biotechnologically produced isobutanol and recently approved for the use as biofuel in aviation blending with conventional jet up to amount of 30 %.In contrast multicomponent crude oil Jet A-1, AtJ-SPK consists mainly two highly branched components.Thus, it fundamental interest look at characteristic combustion behavior assess differences compared A-1 if there are any.Therefore global propertieslaminar...
Currently, new concepts for power generation are discussed, as a response to combat global warming due CO2 emissions stemming from the combustion of fossil fuels. These include new, low-carbon fuels well centralized and decentralized solutions. Thus, more diverse range fuel supplies will be used, with (biogenic) low-caloric gases such syngas coke oven gas (COG) among them. Typical theses is amount hydrogen, share 50% even higher. However, hydrogen mixtures have higher reactivity than natural...
Abstract Mixtures of hydrocarbons and nitrous oxide are known as green propellants could replace the highly toxic hydrazine derivatives rocket fuel, since they non-toxic easier to handle, but still have a high specific impulse. Possible hydrocarbon candidates ethane or ethene. To check applicability two reaction systems, C 2 H 6 /N O 4 O, experiments prerequisite for accurate predictions under various conditions that great importance design safe reliable thrusters. Therefore, experimental...
Over the last years, global concerns about energy security and climate change have resulted in many efforts focusing on potential utilization of non-petroleum-based, i.e. bio-derived, fuels. In this context, n-butanol has recently received high attention because it can be produced sustainably. A comprehensive knowledge its combustion properties is inevitable to ensure an efficient smart use if selected as a future carrier. present work, two major characteristics, here laminar flame speeds...
Abstract Currently, many research studies are exploring opportunities for the use of novel fuels and their blends with conventional, i.e. petroleum-based fuels. To pave way acceptance implementation in existing energy market, a comprehensive knowledge about combustion properties is inevitable, among others. Within this context, alcohols, butanol particular, considered as attractive candidates needed de-fossilization sector. In work, we report on oxidation mixtures n-heptane/i-octane (PRF90,...
Abstract Demands of energy will increase worldwide. The use alternative and renewable resources is an attractive option to counteract climate change connected with the burning fossil fuels. Moreover, improvements in fuel flexibility are a pre-requisite meet challenge sustainable production near future. Within this context, oxygenated molecules, particular ethers high interest because they can be produced renewably. In addition, promising considerably reduced emissions particles soot. future,...