Measured Parameter

Designation

Notes

TE module temperature difference versus electric current at zero heat load

ΔT=ƒ(I)

Direct measurements: the hot side surface of a TE module is thermally stabilized

TE module maximum temperature difference at zero heat load

ΔTmax

Electric current at which DTmax is achieved

Imax

TE module electric voltage versus electric current at zero heat load

U=ƒ(T)

Electric voltage at which DTmax is achieved

Umax

TE module temperature difference versus heat load available at electric current fixed

Q=ƒ(ΔT)

Maximum heat load capacity at Imax (ΔT=0)

Qmax

TE module Figure-of-Merit

Z

Z-meter measurements: the hot side surface of a TE module is or is not thermally stabilized

TE module electric resistance

R

TE module time constant at 0.01Imax

t

Average Seebeck coefficient of TE material

α

Average electric conductivity of TE material

σ