Thermophysics

ZAE Bayern's research and development activities in the field of thermophysics and thermosensorics lead to a deepened physical understanding and the reliable characterization of thermophysical parameters of new materials and materials that are relevant for energy technology.

The focus lies in the description and analysis of complex heat transport processes in heterogeneous material systems (thermal analysis), in the modelling and characterization of heat transport by thermal radiation (applied IR metrology), as well as in the qualitative and quantitative recording of thermal processes and their visual representation (thermosensors). An essential component of all areas is the development of innovative measurement methods, such as imaging analysis methods, which also allow reliable characterization for new material types and systems under the respective application conditions (e.g. temperature and pressure).

Due to the competence of the working groups active in this field and the close integration with the other thematic fields of ZAE Bayern, an expertise is available which enables special synergies in the area of basic research as well as applied energy research.

Fields of Research

Thermal Analysis

Thermal Analysis deals with the experimental and theoretical characterization of thermophysical properties (especially thermal conductivity, enthalpy, specific heat and thermal expansion) and the further development of corresponding measuring methods. The aim is to achieve a deeper understanding of heat transfer processes in complex materials and systems. In addition, the further development of existing measuring techniques and the development of new measuring methods play an important role in order to meet the new and increasingly extreme requirements posed by modern materials.

The combination of highly developed analytical methods and existing theoretical knowledge enables the targeted identification of the optimization potential of the object under investigation and its adaptation to practical applications.

Contact

Dipl.-Phys. Stephan Vidi
+49 931 70564-350
Stephan.Vidi@zae-bayern.de

Dipl.-Phys. Frank Hemberger
+49 931 70564-326
Frank.Hemberger@zae-bayern.de

Applied IR Metrology

The applied IR metrology allows the determination of the heat radiation of surfaces as well as the determination of the radiative heat transfer through materials. The measurement technology, together with the theoretical expertise available in this working group, makes it possible to optimize materials and components thermally for a wide variety of applications. The relevant infrared optical parameters can be determined in a wide range of wavelengths and temperatures as well as under different atmospheres.

In addition, various computer programs for the computational simulation of coupled radiation and heat transfer processes are available in the Infrared Metrology Laboratory. Radiation transport, radiation propagation and coupling effects are mapped by means of basic physical models.

Contact

Dr. Jochen Manara
+49 931 70564-346
Jochen.Manara@zae-bayern.de

Dipl. -Ing. MariaCarla Arduini
+49 931 70564-317
MariaCarla.Arduini@zae-bayern.de

Projects

Industrial process optimization
through improved metrological methods
for the determination of thermophysical properties (Hi-TRACE)

 Hi-TRACE

Many branches of industry such as aerospace, power plant technology as well as glass and ceramics operate plants at temperatures above 1500 ºC. In order to optimise these processes and increase competitiveness, new, more temperature-resistant materials are being developed for which precise knowledge of the relevant parameters under the operating conditions is required. The aim of the project is therefore to create a metrological infrastructure to provide traceable measurement data of thermophysical properties such as temperature Tf, contact resistance Rc, thermal diffusivity a, heat capacity Cp and emissivity ε up to 3000 ºC.

This includes the development of high-precision reference systems, new measurement techniques, reliable calibration methods, validated uncertainty budgets and traceable reference materials for the high temperature range for the determination of thermal and infrared optical properties as well as for the non-contact determination of the adhesion properties of coating systems. The project results enable European, German and Bavarian industrial companies to significantly increase energy efficiency, reduce pollutant emissions, increase safety and improve the reliability of critical applications.

EU-Projekt
Funding reference: 17IND11 – Hi-TRACE
Term of validity: 01.07.2018 – 30.06.2021

Contact

Dr. Jochen Manara
+49 931 70564-346
Jochen.Manara@zae-bayern.de

Dipl.-Phys. Stephan Vidi
+49 931 70564-350
Stephan.Vidi@zae-bayern.de

Improvement of emissivity measurements
on reflective insulation materials (EMIRIM)

 Emissivity measurements on IR-reflecting foil insulations

This project deals with the requirements of the standardization group CEN / TC 89 / WG 12 for the improvement of the standard EN 16012. Previous investigations have shown considerable differences in various measurement methods for the low emissivity of reflective insulation materials below 0.1. Since the properties of the foil insulations depend essentially on the emissivity, its reliable determination is of great importance for the assessment of the foil insulations.

The aim of the project is therefore the development of reference samples as well as optimized calibration and measurement methods for the highly accurate and traceable determination of the emissivity of reflective insulation materials. In cooperation with the standardization committee, methods that exhibit a significantly reduced measurement uncertainty are to be optimized and validated. The results of the project contribute to the increase of energy efficiency in the building sector through the use of appropriately characterized foil insulation, and at the same time strengthen the international competitiveness of European, German and Bavarian companies.

EU-Project
Funding reference: 16NRM06 – EMIRIM
Term of validity: 01.06.2017 – 31.05.2020

Contact

Dr. Jochen Manara
+49 931 70564-346
Jochen.Manara@zae-bayern.de

Dipl.-Ing. Mariacarla Arduini
+49 931 70564-317
Mariacarla.Arduini@zae-bayern.de

Thermal barrier coatings with optimized adhesion properties for energy-efficient power plant turbines (OptiTBCs)

OptiTBCs

The scarcity of natural resources makes it necessary to optimize the efficiency of power plant systems. Firstly, this requires an increase in operating temperature, as the efficiency increases with the increase in operating temperature. In addition, the efficiency of power plant systems is also increased by extending the service life of the components. Research is currently being conducted into continuing to increase the operating temperatures of power plants and new temperature-stable and more durable materials are being developed. Specifically, these include ceramic thermal barrier coatings (TBCs), which primarily protect metallic basic components from excessive heat exposure.

Within the scope of this project, an optimization of the production process of TBCs will be carried out and a non-invasive, i.e. non-destructive examination method will be developed with which the TBCs can be tested both during operation and during layer production. The aim of the project is therefore to develop a transient method, which enables the determination of the adhesion properties of TBCs by means of contactless systems. To this end, the interrelationships between the adhesion or delamination of layers and the change in temperature or reflectance are investigated and recorded qualitatively. By improving the layer properties, higher operating temperatures can be achieved, which increases their energy efficiency. Non-destructive monitoring of the layers also reduces the number of maintenance intervals during which the turbine stops and the blades may need to be replaced, which also increases resource and cost efficiency.

BMWi-Project
Funding reference: 03ET7082A-D

Contact

Dr. Jochen Manara
+49 931 70564-346
Jochen.Manara@zae-bayern.de

Opto-thermal sensors research laboratory

Opthothermal sensor technology

ZAE Bayern and the University of Applied Science Würzburg-Schweinfurt (FHWS) combine their expertise in the field of opto-thermal sensor technology in a joint research laboratory.

The term opto-thermal sensor technology refers to the determination of optical and thermal properties with heat radiation. The aim is to support the industry in the field of non-contact temperature measurement and to offer innovative solutions. Precise temperature measurements are necessary for accurate process control in industrial production (e.g. additive manufacturing processes such as laser sintering) or the reliable and efficient operation of power plants and light sources. Temperature measurement under often extreme conditions, such as high temperatures of up to 2000 °C or more, is very demanding.

ZAE Bayern and FHWS have many years of experience and extensive expertise in the field of opto-thermal sensor technology, supplemented by extensive experimental equipment. This makes it possible to handle complex tasks in the context of joint projects and to carry out investigations in the high temperature range. This creates a special added value for applied research, which among other things makes it possible to support the industry in this field and to offer innovative solutions.

Specifically, the liability of turbine protective coatings for thermal energy conversion is investigated in a joint BMWi (Federal Ministry of Economics and Technology) -funded project.

Contact

Dr. Jochen Manara
+49 931 70564-346
Jochen.Manara@zae-bayern.de

ZAE Bayern

We work at the interface between knowledge-based basic research and applied industrial research. Under the motto "Excellent Energy Research - Excellent Implementation", we realize complete innovation packages that build on synergies between generation, storage and efficiency measures.

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