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COMTESSE - System COMTESSE

The COMTESSE System was developed in a cooperation of aixACCT Systems GmbH and the DLR (German Aerospace Center). The task was to develop a measurement system, which is able to measure all important parameters of thermoelectric materials in one single temperature cycle. As a result of this process the COMTESSE System is a flexible and easy to use product for characterization of thermoelectric materials:

Temperature dependent measurements in one single cycle: thermal conductivity, electrical conductivity, Seebeck-Coefficient, Harman ZT


Highlights/Benefits
  • Temperature dependent measurements of the most important thermoelectric material parameters in one single setup and within one temperature cycle:

    GUI
    • thermal conductivity

    • electrical conductivity

    • Seebeck coefficient

    • Harman ZT

  • Reduced measurement time

  • Reduced effort for sample preparation

  • Compact hardware setup for easy usage

  • Structured interface for quick data access

  • Different user level – grants access to advanced measurement parameters



Measurements Principles - electrical conductivity and Harman ZT
  • Drive sample with DC or AC current to determine electrical conductance

  • AC measurements increase reproducibility and reliability




Measurement Principles - Seebeck and thermal conductivity
  • Highly sophisticated COMTESSE amplifier grants maximum resolution




Measurement Setup
  • Supports various sample geometries

  • Symmetric setup allows to measure bidirectional for data verification




Cooperation
ZIM DLR
COMTESSE
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