Currently funded project

Novel Composite Materials for High-Temperature Heaters and Gas-Electric Hybrid Furnaces (HybMoSi)

Motivation

View of heating conductors in the furnace chamber of a thermo-optical measuring system
© Fraunhofer-Centre HTL
View of heating conductors in the furnace chamber of a thermo-optical measuring system

A large number of different heaters are available for industrial heating processes, but they can only be used in certain atmospheres, do not allow a change of energy source and sometimes have inadequate mechanical properties. Furthermore, in view of the long service life of industrial furnaces in the range of several decades, the energy source used plays an important role for cost efficiency and environmental friendliness. Heating by means of fuel gases is still much cheaper today than electrical heating, which will probably change in the next two decades with rising CO2 taxes and cheaper electricity from renewable energy sources. To enable flexibility in the use of the energy source and the combustion atmosphere, new types of heaters with improved thermomechanical properties are needed, which are currently not available.

Objectives

© Brevier Technische Keramik

The objective of the joint project is to develop new types of MMC resistance heaters with the following property profile:   

  • Creep stability in the service temperature range 1600 °C - 1900 °C
  • Degeneration-stable low-temperature strength > 200 MPa
  • Versatile application atmospheres: Vacuum, oxidising, reducing and inert atmosphere
  • Energy flexibility: gas or electricity as energy source

The newly developed heating elements are to be characterised and tested in the heating application with regard to their application behaviour.

 

Approach

Microstructure property simulation of MMC
© Fraunhofer-Centre HTL
Microstructure property simulation of MMC
High-temperature wetting tests using thermo-optical measuring equipment
High-temperature wetting tests using thermo-optical measuring equipment
  • Development of a novel composite material with electrically conductive component and creep-resistant support structure
  • Gas-tight coating of the composite material as corrosion protection
  • FE-based design of conventional heaters (electrically heated) and radiant tube heaters (electrically or gas heated)
  • Development and production of prototype heaters with protective coating
  • Characterisation of the prototypes in the heating application
  • Design of a hybrid furnace, construction of a furnace demonstrator using the developed heating elements



Project Data

Project Duration
01.05.2021 bis 30.04.2024
Sponsor
Bavarian State Ministry for Economic Affairs, Regional Development and Energy
Funding Amount
330,000 Euros

Project Partners



 

Fraunhofer-Center HTL

Paul Rauschert Steinbach GmbH

Dipl.-Ing. (FH) Konrad Schmidling GmbH

Erich NETZSCH GmbH & Co. Holding KG

Project Coordination

Paul Rauschert Steinbach GmbH

Project Management at the HTL

Christian Eckardt