A5004477350- Phase Change Materials Research
- Solar Thermal and Photovoltaic Systems
- Adsorption and Cooling Systems
- Thermodynamic and Exergetic Analyses of Power and Cooling Systems
- Physics and Engineering Research Articles
- Heat Transfer and Optimization
- Renewable Energy and Sustainability
- Integrated Energy Systems Optimization
- Solar-Powered Water Purification Methods
- Building Energy and Comfort Optimization
- Advanced Battery Technologies Research
- Hybrid Renewable Energy Systems
- Renewable energy and sustainable power systems
- Geothermal Energy Systems and Applications
- Mechanical stress and fatigue analysis
- Spacecraft and Cryogenic Technologies
- Radiative Heat Transfer Studies
- Metal Forming Simulation Techniques
- Gas Dynamics and Kinetic Theory
- Metallurgical Processes and Thermodynamics
- Engineering and Materials Science Studies
- Powder Metallurgy Techniques and Materials
- Photovoltaic System Optimization Techniques
- Microgrid Control and Optimization
- Nuclear reactor physics and engineering
University of Stuttgart
2023-2024
Deutsches Zentrum für Luft- und Raumfahrt e. V. (DLR)
2010-2020
Within the framework of project TESIN funded by German Ministry Economic Affairs and Energy, a high temperature latent heat thermal energy storage unit is being developed will be designed, built, commissioned tested in an operating cogeneration plant Saarland, Germany. This provides superheated steam to industrial process customers from gas turbine with recovery generator. Currently, secondary boiler operated at minimal load, which it can heated full load 2 minutes. With integration into...
The increasing share of renewable energies in the electricity grid requires storage technologies to balance energy supply and demand. Thermally integrated pumped thermal systems are considered a promising technology for medium large-scale applications. Among these, compressed particular has been identified numerous theoretical studies as candidate. Despite these studies, feasibility thus far concept not yet proven experimentally. To overcome this gap publication presents first time entire...
Thermal storage technologies are a key component for increasing energy efficiency and assisting in the integration of regenerative sources market. In latent heat storage, material changes phase as is charged into storage. This makes use large amount enthalpy that absorbed or released during change material. Since unit link chain between supply demand heat, it has to be adapted each particular application. The aspect most difficult adapt required power level. inherent transfer materials...
Abstract During phase change, change materials absorb or release latent heat at a nearly constant temperature. Latent thus can be stored and integrated with evaporation/condensation systems such as steam generators within relatively narrow range of operating Storage units have been proven pilot scale but none to-date in industrial processes. This remains challenge, due to the size hurdles design, permission build. Here we integrate megawatt-scale storage into cogeneration power plant...
Energy storage systems are a key technology for developing more sustainable energy supply system and lowering overall CO2 emissions. Among the variety of technologies, high temperature phase change material (PCM) is promising option with wide range applications. PCM storages using an extended finned tube concept have been designed techno-economically optimized solar thermal power plant operations. These components were experimentally tested in order to validate design simulation models used....
For solar process heat applications with steam as the working fluid and varying application parameters, a novel latent storage concept has been developed using an adaptation of flat plate exchanger concept. Since pressure level in these usually does not exceed 30 bar, material chambers arranged between transfer medium is possible. Phase change materials are used medium, so that isothermal evaporation during discharging paired solidification material. Heat structures can be inserted into to...
Direct steam generation enables the implementation of a higher temperature for parabolic trough concentrated solar power plants. This leads to much better cycle efficiencies and lower electricity generating costs. For flexible more economic operation such plant, it is necessary develop thermal energy storage systems extension production time plant. In case as heat transfer fluid, important use material that uses latent process. minimum exergy losses during concentrating superheated needed...
A latent heat thermal energy storage unit is being integrated into a heat- and power cogeneration plant in Saarland, Germany. This system will act as an intermediate backup to recovery steam generator gas turbine therefore situated parallel this unit, also between the feedwater pumps main. The required superheated, with nominal of 6 MW. needs provide for at least 15 minutes, resulting minimum capacity 1.5 MWh. Integration increase efficiency decrease fossil fuel use by reducing conventional...
A latent heat storage system for the production of superheated steam at >21 bar and 300 °C with a capacity over 1.5 MWh has been developed, designed is in build. The unit concept uses extended finned tubes high packing factor sodium nitrate as material, which changes phase from liquid to solid during charging. an upscaling smaller designs, upper lower headers were adapted operating conditions upscaling. contains 852 tubes, each ca. 6 m tube length, so that semi-automated assembly method was...