A5044328553- Thermodynamic and Exergetic Analyses of Power and Cooling Systems
- Advanced Thermodynamic Systems and Engines
- Advanced Combustion Engine Technologies
- Advanced Thermodynamics and Statistical Mechanics
- Refrigeration and Air Conditioning Technologies
- Combustion and flame dynamics
- Integrated Energy Systems Optimization
- Adsorption and Cooling Systems
- Catalytic Processes in Materials Science
- Geothermal Energy Systems and Applications
- Laser-induced spectroscopy and plasma
- Phase Change Materials Research
- Vehicle emissions and performance
- Solar Thermal and Photovoltaic Systems
- Phase Equilibria and Thermodynamics
- Computational Fluid Dynamics and Aerodynamics
- Heat Transfer and Boiling Studies
- Renewable Energy and Sustainability
- Heat Transfer and Optimization
- Insect and Arachnid Ecology and Behavior
- Laser Design and Applications
- Insect and Pesticide Research
- Physics and Engineering Research Articles
- Biodiesel Production and Applications
- Fuel Cells and Related Materials
University of Bayreuth
2015-2024
Technische Hochschule Ingolstadt
2021
University of Wollongong
2002
University of Stuttgart
1994-2000
RWTH Aachen University
1992
We present a thermo-economic evaluation of binary power plants based on the Organic Rankine Cycle (ORC) for geothermal generation. The focus this study is to analyse if an efficiency increase by using zeotropic mixtures as working fluid overcompensates additional requirements regarding major plant components. optimization approach compared systems with pure media. Based process simulations, heat exchange equipment designed and cost estimations are performed. For source temperatures between...
The design of efficient Organic Rankine Cycle (ORC) units for the usage industrial waste heat at high temperatures requires direct contact evaporators without intermediate thermal oil circuits. Therefore, stability high-temperature working fluids gains importance. In this study, degradation hexamethyldisiloxane (MM) is investigated in an electrically heated tube. Qualitative results concerning remarks on products as well quantitative like annual rate are presented. It shown that MM stable up...
A biomass-driven integrated system comprising anaerobic digestion, gasification, proton exchange membrane electrolyzer (PEME), Sabatier reactor, solid oxide fuel cell (SOFC), a gas turbine, steam turbine and organic Rankine cycle (ORC) was proposed in this study. Biomass feedstocks form of animal waste served as input the digester converted to biogas, crop residue syngas gasifier. Upgraded methane from bio-conversion process fed SOFC-GT topping cycle, with heat recovery bottoming cycles...
This paper presents the investigation of zeotropic binary fluid mixtures containing cyclohexane (critical temperature above 200 °C) as base with R600, R600a, R601, R601a, R1336mzz(Z), R1234ze(Z), R1233zd(E) and cyclopropane temperatures between 100 °C °C). For pure components their mixtures, performance vapor compression system an internal heat exchanger was analysed at 50 80 source sink inlet, respectively. Variation difference pinch point supply (140–170 were also investigated. A 5 K...
The ine uence of different injector geometries on the mixing behavior planar supersonic jets is investigated. Hydrogenisinjectedinthee owdirectionthroughthebluntendofastrut.Differentlipthicknessesattheinjectorend induce extents recirculation zones. Additionally, changes are caused within shock-wave/expansion fan pattern at exit that have an important loss in total pressure. accuracy used numerical scheme demonstrated for one geometry by comparison with experimental data. Based this cone...
We present a thermo-economic analysis of an Organic Rankine Cycle (ORC) for waste heat recovery. A case study source temperature 150 °C and subcritical, saturated cycle is performed. As working fluids R245fa, isobutane, isopentane, the mixture isobutane isopentane are considered. The minimal difference in evaporator condenser, as well composition chosen variables order to identify most suitable fluid combination with optimal process parameters under criteria. In general, results show that...