A temperature-change sensor by thermoelectric elements that is directly connected to a p-type element and an n-type element was developed. A β-FeSi2 thermo-electric semiconductor made by a spark plasma sintering method was used as a prototype sensor. Evaluation of this thermoelectric temperature-change sensor was carried out by measuring its electromotive force when it was dropped into a thermo-stated water bath. It was confirmed that there existed a correlation between the temperature difference and the electromotive force of the sensor, i.e., approximately 5 mV of electromotive force was generated at a temperature difference of 30 K. In addition, the dependence of electromotive force on the size and properties of the thermoelectric elements was evaluated by carrying out FEM analysis.
All Science Journal Classification (ASJC) codes
- Condensed Matter Physics
- Fluid Flow and Transfer Processes