Where conventional materials reach their limits, ceramics can display their excellent properties. Functional ceramics – so-called thermoelectric materials – can convert waste heat directly into electricity, for example, in high-temperature processes. At the Hannover Messe 2016, Europe's largest ceramics research institute presents for the first time a system that demonstrates the reliable functionality of thermoelectric ceramic modules developed at Fraunhofer IKTS. (Hall 6, Booth B16)
Currently, less than half of the energy used in industrial processes, transport or households is actually utilized. The majority of primary energy still escapes despite numerous energy-saving measures as waste heat into the environment.
Thermoelectric generators (TEG) can help to transform this wasted heat energy into electricity. However, there are still obstacles in terms of cost efficiency, availability of raw materials, processing and environmental sustainability of the applied thermoelectric materials.
Ceramic materials provide a solution with an exceptionally flexible property range. They can be produced environmentally friendly from readily available raw materials. Up to now, ceramic TEGs for only limited tasks and low energy conversion efficiency were realized.
Fraunhofer IKTS has extensive know-how regarding the production of ceramic thermoelectric materials. As the first German research institute, IKTS managed the cost-effective production of fully functional ceramic TEGs that have a long lifetime and can be used at high temperatures, which makes them energetically interesting.
“We offer our customers economically attractive ceramic TEG modules, with which valuable waste heat can be converted into electricity independently and reliably – and at temperatures of up to 1000 °C. Such robust, maintenance-free and particularly durable TEGs are attractive for a variety of applications, e.g. in metallurgical processes, or in the hot zones of internal combustion engines.” says Hans-Peter Martin, head of the group “Nitride Ceramics and Structural Ceramics with Electrical Function” at Fraunhofer IKTS.
Scientists at the Fraunhofer IKTS offer a customized development of ceramic TEG modules – adapted for the conditions of the host process. Therefore, the ceramic components are optimized in terms of electrical parameters, chemical interactions and geometrical requirements, and – on request – integrated into the individual thermal system. With the system configuration shown in Hannover, visitors can experience firsthand how the waste heat of a working all-ceramic heating conductor at 800 °C is converted in the ceramic TEG modules and used for controlling a display.
The expertise to build such TEGs at Fraunhofer IKTS is derived from the institute’s decades of experience with electrically functionalized high-temperature materials, such as heat conductors, evaporators and ceramic foams. Guests and partners can also inform themselves about these technology offers at the Hannover Messe 2016.
Katrin Schwarz | Fraunhofer-Institut für Keramische Technologien und Systeme IKTS
Scientists from Hannover develop a novel lightweight production process
27.09.2017 | IPH - Institut für Integrierte Produktion Hannover gGmbH
PRESTO – Highly Dynamic Powerhouses
15.05.2017 | JULABO GmbH
University of Maryland researchers contribute to historic detection of gravitational waves and light created by event
On August 17, 2017, at 12:41:04 UTC, scientists made the first direct observation of a merger between two neutron stars--the dense, collapsed cores that remain...
Seven new papers describe the first-ever detection of light from a gravitational wave source. The event, caused by two neutron stars colliding and merging together, was dubbed GW170817 because it sent ripples through space-time that reached Earth on 2017 August 17. Around the world, hundreds of excited astronomers mobilized quickly and were able to observe the event using numerous telescopes, providing a wealth of new data.
Previous detections of gravitational waves have all involved the merger of two black holes, a feat that won the 2017 Nobel Prize in Physics earlier this month....
Material defects in end products can quickly result in failures in many areas of industry, and have a massive impact on the safe use of their products. This is why, in the field of quality assurance, intelligent, nondestructive sensor systems play a key role. They allow testing components and parts in a rapid and cost-efficient manner without destroying the actual product or changing its surface. Experts from the Fraunhofer IZFP in Saarbrücken will be presenting two exhibits at the Blechexpo in Stuttgart from 7–10 November 2017 that allow fast, reliable, and automated characterization of materials and detection of defects (Hall 5, Booth 5306).
When quality testing uses time-consuming destructive test methods, it can result in enormous costs due to damaging or destroying the products. And given that...
Using a new cooling technique MPQ scientists succeed at observing collisions in a dense beam of cold and slow dipolar molecules.
How do chemical reactions proceed at extremely low temperatures? The answer requires the investigation of molecular samples that are cold, dense, and slow at...
Scientists from the Max Planck Institute of Quantum Optics, using high precision laser spectroscopy of atomic hydrogen, confirm the surprisingly small value of the proton radius determined from muonic hydrogen.
It was one of the breakthroughs of the year 2010: Laser spectroscopy of muonic hydrogen resulted in a value for the proton charge radius that was significantly...
17.10.2017 | Event News
10.10.2017 | Event News
10.10.2017 | Event News
19.10.2017 | Life Sciences
19.10.2017 | Interdisciplinary Research
19.10.2017 | Earth Sciences