A5083132861- Integrated Energy Systems Optimization
- Hybrid Renewable Energy Systems
- Power Systems and Technologies
- Power System Reliability and Maintenance
- Railway Systems and Energy Efficiency
- Physics of Superconductivity and Magnetism
- Electric Vehicles and Infrastructure
- Renewable energy and sustainable power systems
- Energy and Environment Impacts
- Catalysts for Methane Reforming
- Carbon Dioxide Capture Technologies
- Catalysis and Oxidation Reactions
- Terahertz technology and applications
- Big Data Technologies and Applications
- Photovoltaic Systems and Sustainability
- Global Energy Security and Policy
- Smart Grid Energy Management
- Superconducting and THz Device Technology
- Semiconductor Quantum Structures and Devices
- Quantum and electron transport phenomena
- Electric Power System Optimization
- Distributed and Parallel Computing Systems
- Spectroscopy and Laser Applications
- Agriculture Sustainability and Environmental Impact
- Sustainability in Higher Education
Justus-Liebig-Universität Gießen
2021-2024
Potsdam Institute for Climate Impact Research
2023-2024
Leibniz Association
2023-2024
Giessen School of Theology
2021
University of Tübingen
2017-2020
Import and export of fossil energy carriers are cornerstones systems world-wide. If to become climate neutral sustainable, need be substituted with carbon alternatives or electrified if possible. We investigate synthetic chemical carriers, H2, CH4, MeOH, NH3 Fischer-Tropsch fuels (FTF), produced using electricity from RES as substitutes. [...] model the sourcing feedstock chemicals, synthesis transport along nine different Energy Supply Chains Germany (DE) compare import options for seven...
Hofmann et al., (2021). atlite: A Lightweight Python Package for Calculating Renewable Power Potentials and Time Series. Journal of Open Source Software, 6(62), 3294, https://doi.org/10.21105/joss.03294
Tom Brown leads a group of energy system modelers at the Technische Universität Berlin, where he holds professorship for digital transformation in systems. His researches future pathways system, with particular focus on revealing trade-offs between resources, network expansion, flexibility, and public acceptance new infrastructure. He is strong supporter openness transparency research one lead developers widely used open-source software Python Power System Analysis (PyPSA).Graphical...
Macro-energy system modelling is used by decision-makers to steer the global energy transition towards an affordable, sustainable and reliable future. Closed-source models are current standard for most policy industry decisions. However, open have proven be competitive alternatives that promote science, robust technical analysis, collaboration transparent decision-making. Yet, two issues slow adoption: often designed with particular geographic scope in mind, thus hindering synergies from...
Abstract The climate crisis and the degradation of world's ecosystems require humanity to take immediate action. international scientific community has a responsibility limit negative environmental impacts basic research. HECAP+ communities ( High Energy Physics, Cosmology, Astroparticle Hadron Nuclear Physics ) make use common similar experimental infrastructure, such as accelerators observatories, rely similarly on processing big data. Our therefore face challenges improving sustainability...
Detection and imaging using light at terahertz frequencies continues to be a topic of keen interest for numerous applications. Recent investigations have shown that stacks natural Josephson junctions in cuprate superconductors are suitable emitters THz radiation; now our attention turns effective use such source. Using two setups, one featuring bolometric detection the other heterodyne, authors achieve results respectively comparable those time-domain spectroscopy systems based on quantum...
Where local resources for renewable electricity are scarce or insufficient, long-distance imports will be required in the future. Even across long distances, variable availability of energy sources needs to managed which dedicated storage options usually considered. Other alternatives could demand-side flexibility and concentrated solar power with integrated thermal storage. Here their influence on cost imported is explored. Using a techno-economic linear capacity optimization, exports from...
Single crystals of the high-temperature superconductor Bi${}_{2}$Sr${}_{2}$CaCu${}_{2}$O${}_{8}$ are promising terahertz emitters, but for operating temperatures above 70 K they either show no emission or radiate well below 500 GHz, limiting their applicability. To improve properties, especially liquid-nitrogen temperature, a standalone stack overdoped material with high critical temperature and current density is embedded in sandwich structure, efficient heat removal. Emission 0.577-THz...
The climate crisis and the degradation of world's ecosystems require humanity to take immediate action. international scientific community has a responsibility limit negative environmental impacts basic research. HECAP+ communities (High Energy Physics, Cosmology, Astroparticle Hadron Nuclear Physics) make use common similar experimental infrastructure, such as accelerators observatories, rely similarly on processing big data. Our therefore face challenges improving sustainability our This...
Abstract Importing renewable energy to Europe offers many potential benefits, including reduced costs, lower pressure on infrastructure development, and less land-use within Europe. However, there remain open questions: the achievable cost reductions, how much should be imported, whether vector electricity, hydrogen or derivatives like ammonia steel, their impact Europe's domestic needs. This study integrates TRACE global supply chain model with sector-coupled system for PyPSA-Eur explore...
Electricity network modelling and grid simulations form a key enabling element for the integration of newer cleaner technologies such as renewable energy generation electric vehicles into existing system infrastructure. This paper reviews models African electricity systems highlights gaps in open model landscape. Using PyPSA (an Power System Analysis package), outlines pathway to fully data increase transparency planning. Optimisation can reveal viable pathways sustainable system, aiding...
Import and export of fossil energy carriers are cornerstones systems world-wide. If to become climate neutral sustainable, need be substituted with carbon alternatives or electrified if possible. We investigate synthetic chemical carriers, H2, CH4, MeOH, NH3 Fischer-Tropsch fuels (FTF), produced using electricity from RES as substitutes. [...] model the sourcing feedstock chemicals, synthesis transport along nine different Energy Supply Chains Germany (DE) compare import options for seven...
Developing technology to exploit the ``THz window'' of electromagnetic spectrum continues be a major research theme. Stacks intrinsic Josephson junctions in cuprate superconductor are good source THz photons; with them, one can even imagine laser on chip. To better understand purity this radiation, authors study phenomenon self-mixing, which nonlinearity elements leads two or more nearby emission peaks producing signals at difference frequencies. These results helpful for synchronizing...
We report on doping and undoping experiments of terahertz (THz) emitting intrinsic Josephson junction stacks, where the change in charge carrier concentration is achieved by heavy current injection. The were performed stand-alone structures fabricated from a Bi2Sr2CaCu2O single crystal near optimal doping. stacks contained about 930 junctions. On purpose, over only modest range concentrations, changing critical temperature stack less than 1 K. show that both feasible also for large used THz...
Importing renewable energy to Europe offers many potential benefits, including reduced costs, lower pressure on infrastructure development, and less land-use within Europe. However, there remain open questions: the achievable cost reductions, how much should be imported, whether vector electricity, hydrogen or derivatives like ammonia steel, their impact Europe's domestic needs. This study integrates TRACE global supply chain model with sector-coupled system for PyPSA-Eur explore scenarios...
Macro-energy system modelling is used by decision-makers to steer the global energy transition toward an affordable, sustainable and reliable future. Closed-source models are current standard for most policy industry decisions. However, open have proven be competitive alternatives that promote science, robust technical analysis, collaboration transparent decision-making. Yet, two issues slow adoption: often designed with limited geographic scope, hindering synergies from collaboration, or...
The climate crisis and the degradation of world's ecosystems require humanity to take immediate action. international scientific community has a responsibility limit negative environmental impacts basic research. HECAP+ communities (High Energy Physics, Cosmology, Astroparticle Hadron Nuclear Physics) make use common similar experimental infrastructure, such as accelerators observatories, rely similarly on processing big data. Our therefore face challenges improving sustainability our This...