I would suggest measuring thermal conductivity, Seebeck and electrical conductivity using PPMS but it can only be measured up to room temperature I suppose.

figure of merit = Z = (Seebec coefficient)^2 * Conductivity/ Thermal conductivity.

Hence these three to be measured simultaneously at a given temperatute

Are you looking to calculate the expected parameters based on knowledge you have on the design or are you looking to measure the parameters of a device you have?

Reginald Pierce , I need a parameters for the commercial Thermoelectric generator.

Hi Challa, sorry that I lost track of this. My thesis was on exactly that--if you are interested, just check out chapters 2 and 7 of http://scholarworks.rit.edu/theses/8645/

Other works I would recommend are the

Hello Challa :)

What do you mean with the internal parameters ?

You can determine its ZT (figure of merit) , efficiency of power conversion , max. power conversion efficiency (carnot efficiency) , or .. thermal resistance... also max. delivered power as a function of the load (but all of these are performance's parameters of the TEG.

But if you want to speak of a thermal conductivity or a electrical conductivity value or the seebeck coefficient , you have to perform measurements of the individual materials composing the TEG.

Can you clarify the question for me, to see if I can help ?

Regards ! :)

thanks for the response Franklin Uriel Parás Hernández.

Hi Challa B.:

You are welcome ,

Try to search documentation on the following two methods, in my opinion are the most used when characterizing the power conversion performance of a TEG.

- Hot Plate: be careful since there is a particular methodology and outline to perform Hot Plate to characterize the thermoelectric module (thermoelectric generator or peltier cell) and another different outline to perform it when what you want to mesure are the thermoelectric properties of the individual materials.

From the Hot Plate you can determine the Seebeck Coefficient of your device, the Electric Resistance of the device, its response of the voltage as a function of the connected load and the max. delivered power as a function of the load., and ZT as well.

- Impedances Spectroscopy: Using this technique you would be able to measure different values of the device's impedances, as the thermal impedance, the isothermal, etc., and the calculate the ZT of your device as well.

Using both techniques is a good way to compare and verify your results since you can determine the value of the ZT with both and they are two separate methods.

I'm sorry I don't have in hand now any documentation about these methods, hopefully it won't be difficult to find good articles and literature with its full descriptions and characteristics.

Best Regards !

:)

Thank you so much for your valuable suggestion. I will try any one of the method to find internal parameters. thanks once again franklin Uriel Parás Hernández.