Performance Index Z Value tester.

The performance index of a thermoelectric device is a device that verifies the efficiency of a thermoelectric device.

In order to measure the performance of a thermoelectric device, a parameter for evaluating the performance of a thermoelectric material is required. This is expressed as a figure of merit (Z)

At this time, the figure of merit "Z" is expressed as the above equation.
As a result, the characteristics of the thermoelectric material are such that the higher the whiteness factor, that is, The lower the electrical resistivity, The lower the thermal conductivity, the better, Generally, the figure of merit Z is obtained by multiplying this value by the temperature T rather than by direct use, We use the parameter ZT, but it takes time for the manager to measure electrical conductivity and electrical resistivity, so we use a device that can easily measure the Z value.

Utilization of thermoelectric devices according to measurement performance index [단위 : 10^-3K^-1 ]

Metrics

• AC Resistance
• Thermoelectric Figure of Merit (Z)
• Maximum temperature difference of thermoelectric sample
• Time Constant of Thermoelectric Module.

This Z Valur testing system uses Haman's method.