• German
  • English


The Gas- und Wärme-Institut Essen e.V. has access to extensive powerful dynamic and numerical simulation and calculation programs, which have been used in the R&D departments "Fuel and Appliance Technology (BGT)" and "Industrial Combustion Technology (IFT)" for several years to design and optimize energy supply concepts as well as industrial combustion systems and processes, both in the context of research projects and in solving customer-specific problems. The simulation tools used for this purpose include the following software programs:

  • ChemCAD®: Process simulation of industrial plants
  • Modelica®: dynamic system simulation of grids, districts, buildings, technologies, …
  • COSILAB®: chemical kinetics simulations, using detailed reaction mechanisms
  • ANSYS FLUENT®: 3D CFD simulation of flows, combustion, heat transfer and emissions, etc.


In addition, GWI intensively uses the following visualization and calculation tools:

  • GIS - Geographical Information System (QGIS): data acquisition, site analysis and spatial representation
  • GasCalc®, GasData, GWI Arbeitsblätter: fuel characteristics and combustion


While the BGT department uses these simulation tools and calculation modules for the design and optimization of future energy system (flyer BGT simulations), the IFT department applies them for the investigation and optimization of industrial combustion processes and plants as well as their firing systems and components (flyer IFT simulations).

Simulations take into account all system-relevant parameters, whereby parameter studies, geometry variations, processes involving chemical kinetics and the dynamic behavior of processes be considered. Furthermore, with its simulation tools, GWI is able to perform dynamic process simulation for entire energy systems (generation, grids and end-use) and detailed and 3D spatially resolved modeling for thermal industrial processes in a holistic manner, describing the complex physical processes in the energy system and providing insight into the interactions of the individual phenomena (flow, combustion, radiation, etc.). In this way, optimization and retrofitting strategies can be studied and tested in without costly plant stops and thus production losses.

The simulation results obtained allow insights into the process that are hardly possible or only possible with great effort by means of measurement technology. By combining these results with experimental investigations, GWI analyzes and optimizes the energy systems and contributes to the solution of customer- and process-specific issues.