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Dresden 2014 – scientific programme

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TUT: Tutorials

TUT 1: Tutorial: Thermoelectricity - The Quest for a High Figure of Merit (TT)

TUT 1.3: Tutorial

Sunday, March 30, 2014, 17:40–18:25, HSZ 304

High Temperature Thermoelectric Power Generators: Materials and Devices — •Anke Weidenkaff1,2 and Wenjie Xie21Empa, 8600 Dübendorf, Switzerland — 2Institut für Materialwissenschaft, Universität Stuttgart, 70174 Stuttgart, Germany

With a thermoelectric converter heat can be directly converted into electricity. A broad application of thermoelectric converters in future energy technologies requires the development of thermoelectric active, stable, low cost and sustainable materials. Suitable candidates are being selected among novel materials according to their temperature dependent ZT (thermoelectric figure of merit) values, and their compatibility factors to produce well performing thermoelectric converters, delivering a high power output. Theses converters are tested under ambient air at temperatures of T > 900 C and applied in an exhaust gas stream of a custom made hybrid vehicle, concentrated solar thermal converters, metal casting furnaces and solid oxide fuel cells. The lectures will provide an overview on the development of novel perovskite-type and Heusler materials gaining importance for future energy technologies

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