Thermophysical material properties
The research group has been working for many years on the determination of thermophysical material properties of solids. Commercial and self-developed equipment is used in various parameter ranges of temperature, pressure and gas atmosphere to characterise a wide variety of materials (metals, plastics, building and insulating materials) and structures (compact bodies, foams, granulates, layers). Measured variables include thermal and temperature conductivity, specific heat capacity, thermal expansion and radiation properties (transmission, reflection).
Dr.-Ing. Rhena Wulf
Head of Research Group Thermophysical Properties of Materials
Professorship for Technical Thermodynamics
Lampadius Bau
Room 304
Gustav-Zeuner-Straße 7
09599 Freiberg
+49 3731 39-2468
Rhena [dot] Wulf [at] ttd [dot] tu-freiberg [dot] de
Other members of the research group
| Name, first name | Title | Telephone | |
|---|---|---|---|
| Heisig, Lisa-Marie | M.Sc. | +49 3731 39-3155 | Lisa-Marie [dot] Heisig [at] ttd [dot] tu-freiberg [dot] de |
| Kroll, Ullrich | M.Sc. | +49 3731 39-3973 | Ullrich [dot] Kroll [at] ttd [dot] tu-freiberg [dot] de |
| Pan, Luyao | M.Sc. | +49 3731 39-3637 | Luyao [dot] Pan [at] ttd [dot] tu-freiberg [dot] de |
The research group has dealt specifically with the following topics, among others:
- Design and construction of measuring apparatus for determining the thermal conductivity of insulation materials at temperatures up to 1.600 °C and under different gas atmospheres, supported by numerical simulation
- Heat conductivity of insulating materials at high temperatures - evaluation and comparison of different measurement methods
- Further development of measurement methods for determining the heat conductivity of metal and ceramic foams
- Modelling the heat transport in porous media
- Investigations into the influence of the gas atmosphere and the Knudsen effect on the thermal conductivity of porous media
- Participation in intercomparisons within the framework of the thermophysics working group (temperature and thermal conductivity, thermal expansion, specific heat capacity) for quality assurance
- Thermophysical properties of thermal barrier coatings based on Ln2Zr2O7-Y2O3-systems and sprayed coatings
- High-temperature insulation materials for use in industrial furnaces with hydrogen-containing inert gas atmospheres
Further development
A special plate apparatus for determining the thermal conductivity of insulation materials from vacuum (10-5 bar) to the high-pressure range (100 bar) at temperatures up to approx. 900 °C is currently in the test phase.
Method development for determining the thermophysical material properties of liquids, gases and supercritical fluids in a wide temperature range is also planned.
Projects can be supported in the following ways:
- Measurement of thermophysical material data of solids with different structures
- Parameter studies on the influence on thermophysical material data
- Method development and comparison of different measurement procedures
- Model evaluation and development for heat transport in porous structures
- Search for comparative data of thermophysical material data from an existing, very extensive material data collection
