Practical trainings, student assistants and theses

Techno-economic assessment of a load-flexible power-to-methanol process under different renewable power supply scenarios (Id 325)

Master theses / Diploma theses

The Institute of Fluid Dynamics of the Helmholtz-Center Dresden-Rossendorf (HZDR) is engaged in research concerning topics such as modeling and simulation of closely coupled power-to-X systems as well as the analysis of their detailed process behavior and techno-economic performance under fluctuating loads. At the center of the research activities lies the power-to-methanol technology driven by renewable energy based on high temperature electrolysis (SOEC) and the subsequent conversion of H2 together with anthropogenic CO2 into valuable products such as methanol as a climate neutral feedstock or fuel of the future.
Based on an existing system model of a power-to-methanol process as well as a basic techno-economic model, the economic performance of the decentralized production of methanol is to be studied under different scenarios (e.g. grid connection, coupling with PV and wind farms).
The topic includes the following tasks:

  • detailed literature study on the techno-economic assessment (TEA) of power-to-methanol processes as well as the economic characterization of intermittent operating scenarios,
  • gather detailed data of capital expenditures with respect to the purchase costs of all employed components in the system (SOEC, synthesis reactor, compressors, heat exchangers, etc.),
  • further development of the existing techno-economic model within Matlab to assess the methanol production price under fluctuating operation of the decentralized plant in a renewable energy framework,
  • study of the economic performance of a coupling of the power-to-methanol process with a battery storage of suitable size under the premise of a PV or wind farm renewable energy supply.

Department: Experimental Thermal Fluid Dynamics

Contact: Fogel, Stefan

Requirements

  • students (f/m/d) of industrial engineering, chemical engineering, mechanical engineering, process engineering or any other suitable university education with a bachelor degree of higher merit
  • profound knowledge in using Matlab
  • accurate, creative and independent working style
  • good written and oral communication skills
  • interest in scientific work

Conditions

Time frame: 6 months

Online application

Please apply online: english / german

Druckversion


Nonlinear characterization of horizontal gas-liquid flows (Id 266)

Master theses / Diploma theses / Compulsory internship

Foto: Nonlinear characterization of horizontal gas-liquid flows ©Copyright: Dr. Philipp WiedemannHorizontal gas-liquid flows occur in a variety of processes in energy and process engineering. According to the type of fluids, operating conditions and geometrical aspects different flow patterns are observed. These can be identified successfully by means of online monitoring systems when using appropriate measurement techniques and data processing algorithms.
Within the frame of an internship further investigations will focus on the predictability of the future development of the flow patterns on the basis of currently measured data. For that purpose, methods for characterizing nonlinear systems shall be realized as Matlab-scripts and applied to available data. Finally, the results are expected to be evaluated.

Department: Experimental Thermal Fluid Dynamics

Contact: Dr. Wiedemann, Philipp

Requirements

  • studies in mathematics/physics/engineering
  • interest in applying sophisticated mathematical methods to engineering problems
  • experiences in signal processing and nonlinear systems as well as using Matlab are beneficial
  • good written and oral communication skills in English and German

Conditions

  • start: from Jan. 2022
  • working in a multi-disciplinary team
  • remuneration according to HZDR internal regulations

Links:

Online application

Please apply online: english / german

Druckversion


Investigation of the flow behavior of fluidized particles by means of coupled CFD-DEM simulations (Id 253)

Master theses / Diploma theses / Compulsory internship

Foto: CFD-DEM fluidized bed ©Copyright: Dr. Philipp WiedemannFluidized beds are widely applied in process plants of pharmaceutical, food and chemical industries. Due to the complex flow structure optimization of such devices and process control is usually supported by simulations. However, since it is not feasible to resolve all spatial and temporal scales within a single simulation environment, large-scale simulations require reliable sub-models in order to account for small-scale phenomena correctly.
Therefore, the macroscopic flow properties of fluidized particles will be investigated by means of CFD-DEM simulations within the frame of an internship. Research will focus on the influence of different particle size distributions. The results shall lead to enhanced insight into the complex gas-solids-interaction of fluidized beds and will be incorporated into future developments.

Department: Experimental Thermal Fluid Dynamics

Contact: Dr. Wiedemann, Philipp

Requirements

  • studies in chemical/mechanical/process/computational engineering
  • substantiated knowledge in the field of CFD, preferably OpenFOAM
  • interest in multiphase flow phenomena
  • good written and oral communication skills in English and German

Conditions

  • start: from Feb. 2022
  • scope of work: up to 6 months (according to study regulations)
  • working in a multi-disciplinary team
  • remuneration according to HZDR internal regulations

Online application

Please apply online: english / german

Druckversion