Lectures

Thermodynamics 1 (2VL/ 1Ü/ 1S) (Bachelor)

Contact: Prof. Dr.-Ing. Thomas Koller and Dipl.-Ing. Martin Buchholz

Contents:

• Basic concepts of thermodynamics
• Balances and conservation laws
• Thermodynamic relations
• Fundamental equations and equations of state
• Heat and work interactions
• Basic thermodynamic state changes and processes
• Equilibrium criteria
• Working capacity and exergy
• Ideal gas
• Properties of real substances

Thermodynamics (2VL/ 2Ü/ 1S) (Bachelor)

Contact: Prof. Dr.-Ing. Thomas Koller and Dipl.-Ing. Martin Buchholz

Contents:

• Thermodynamic processes
• Moist air
• Heat exchangers
• One-dimensional steady-state heat conduction
• Multidimensional transient heat conduction
• Convective heat transfer without phase change
• Convective heat transfer with phase change
• Thermal radiation
• Radiation of black/real bodies
• Radiation properties of real bodies
• Radiative exchange

Thermodynamics of mixtures (2VL/ 2Ü) (Master)

Conctact: Prof. Dr.-Ing. Gabriele Raabe

Contents:

• Introduction: extension of the basic laws and principles of thermodynamics to mixtures
• Equations of state and the chemical potential
• Euler equation and Gibbs-Duhem relation
• Gibbs phase rule and phase diagrams
• Thermophysical properties of real mixtures
• Modelling of excess properties
• Conditions of thermodynamic equilibrium and stability
• Calculation of phase equilibria, differential equation of state for phase boundaries
• Thermodynamics of chemical reactions and combustion

Object-oriented simulation methods in thermo- and fluid dynamics (2VL/ 2Ü) (Master)

Contact: M.Sc. Jonas Hielscher and Dr.-Ing. Wilhelm Tegethoff

Contents:

• Introduction to the programming language Python
• Programming of application-oriented models of thermal energy systems (e.g. thermal solar system) as well as the necessary numerical solution methods for ordinary differential equations
• Algebraic equations and event indicators
• Development of graphical user interfaces (e.g. with PyQt) and
  introduction to the FMI standard. Use of numerous Python libraries for mathematical operations and visualization.

Molecular simulation (2VL/ 2Ü) (Master)

Contact: Prof. Dr.-Ing. Gabriele Raabe

Contents:

• Fundamental concepts of statistical thermodynamics: ensembles, partition functions, partition function of the ideal gas,
  Maxwell-Boltzmann distribution of velocities;
• Monte Carlo Simulation: Inportance Sampling, simulations in different ensembles, algorithms for phase equilibria
  simulations, biased sampling;
• Molecular dynamics: finite- difference methods, computation of transport properties, simulations in different ensembles,
  thermostats and barostats, simulation of molecules;
• Molecular models: intra- and intermolecular interactions and their description, different force field approaches;
• Simulation technics: setting up, periodic boundary conditions, neighbour lists, Ewald summation, running and analysing
  molecular simulations

Laboratory for the lecture Molecular Simulation (2L) (Master)

Contact: Prof. Dr.-Ing. Gabriele Raabe

Contents:

Performing independently molecular simulation studies, setting up and running simulations using
different force fields, analysis and interpretation of simulation results

Molecular Modeling and Simulation of Biological and Pharmaceutical Systems (for Bioengineering, Chemical Engineering, and Pharmaceutical Engineering).

Contact: Prof. Dr.-Ing. Gabriele Raabe

Contents:

• Fundamental concepts of statistical thermodynamics:
• Introduction to Molecular dynamics
• Force field models for biological and pharmaceutical systems; Coarse Graining approaches
• Simulation techniques, running and analysing molecular simulations, use of simulation and visualisation tools
• Free energy methods and their applications: solubility, conformational changes, ligand binding etc.

Sustainable (waste-) heat utilization (2VL/ 1Ü) (Master)

Ansprechperson: Dr.-Ing. Nicholas Lemke

Inhalt:

• Fundamentals of technical thermodynamics: balancing, process variables, exergy, cyclic processes, heat transfer.

• Classification of different waste heat sources: Industry, transport, natural sources

• Heat insulation, storage and transport: sensible, latent & thermo-chemical heat storage, district heating, heat pipes

• Processes and methods for heat recovery: heat pumps, organic Rankine cycle, Kalina process, Stirling process, Joule process, thermoelectrics, absorption & adsorption refrigeration, sorption-based air conditioning

• Systems and operating strategies: exergetic analysis & optimization

  Translated with www.DeepL.com/Translator (free version)

Modeling of thermal systems in Modelica (2VL/ 1Ü) (Master)

Registration:  Dr.-Ing. Wilhelm Tegethoff

Contact: Dr.-Ing. Wilhelm Tegethoff and Fynn Linnenbrügger

Contents:

• Object-oriented and equation-based formulation of hybrid algebro-differential equation systems (hybrid ADGL systems) to describe physical systems using the simulation language Modelica (www.modelica.org)
• Numerical solution methods: DGL integration, residual iteration, event detection
• Practical examples on the computer: building your own object-oriented model libraries, describing physical balances and transport processes using existing material data libraries, steady-state and transient modeling of various thermal components and systems
• With the final project and in the final exam, participants demonstrate that they can independently create an object-oriented, equation-based model library and understand the required numerical solution methods

Vehicle air conditioning (2VL/ 1Ü) (Master)

Conctact: Dr.-Ing. Nicholas Lemke, M.Sc. Jakob Trägner

Contents:

• Thermal Comfort
• Air Quality
• Safety Aspects
• Ventilation and Air Conditioning
• Cooling Circuit, Refrigerant Circuit
• Refrigerants
• Components, Green House Effect, Alternative Refrigerants and Air Conditioning Systems
• CO2 as Refrigerant
• Advanced Refrigeration Technologies
• Applications

Laboratory for the lecture vehicle air conditioning (2L) (Master)

Contact: M.Sc. Jakob Trägner

Contents:

The lab offers a laboratory practical course with 3 experiments to the lecture:

• Operation of a passenger car air conditioning system
• Demonstration of the critical point of pure substances
• Investigation of a cold vapor process

Laboratory on the interdisciplinary research module battery (Master)

Contact: M.Sc. Alexander Busch

Contents:

• Electrical and thermal modeling of battery cells and modules on system level in the modeling language Modelica
• Investigation and evaluation of different cooling strategies for use in electrified vehicles