scholarly journals Correction of the Electrical and Thermal Extrinsic Effects in Thermoelectric Measurements by the Harman Method

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Min-Su Kang ◽  
Im-Jun Roh ◽  
Yun Goo Lee ◽  
Seung-Hyub Baek ◽  
Seong Keun Kim ◽  
...  
Keyword(s):  
Harman Method ◽  
Thermoelectric Measurements ◽  
Extrinsic Effects

Extrinsic effects in the dynamics and selection of cellular arrays

10.2514/3.508 ◽  
1994 ◽  
Vol 8 (1) ◽  
pp. 113-118 ◽  
Author(s):  
B. Billia ◽  
H. Jamgotchian ◽  
H. Nguyen Thi ◽  
P. Cerisier ◽  
R. Trivedi
Keyword(s):  
Extrinsic Effects ◽  
Selection Of ◽  
Cellular Arrays

Surface and friction characterization by thermoelectric measurements during ultrasonic friction processes

Ultrasonics ◽  
2000 ◽  
Vol 38 (1-8) ◽  
pp. 212-214 ◽  
Author(s):  
P. Schwaller ◽  
P. Gröning ◽  
A. Schneuwly ◽  
P. Boschung ◽  
E. Müller ◽  
...  
Keyword(s):  
Thermoelectric Measurements

SIZE-DEPENDENT ERRORS IN Z DETERMINATION USING THE HARMAN METHOD

1965 ◽  
Vol 43 (9) ◽  
pp. 1589-1603 ◽  
Author(s):  
C. H. Champness ◽  
P. C. Parekh
Keyword(s):  
Bismuth Telluride ◽  
Figure Of Merit ◽  
Absolute Temperature ◽  
Thermoelectric Figure Of Merit ◽  
Sectional Area ◽  
Thermoelectric Figure ◽  
Cross Sectional ◽  
Harman Method ◽  
Size Dependent ◽  
Current Leads

The effect of sample size on the measured thermoelectric figure of merit (Zm) determined by the Peltier–Seebeck or Harman method has been studied by progressively halving the area (As) and length (ls) of bismuth telluride alloy samples. Measurements were carried out with As values from 1 to 0.01 cm2, la values from 2 to 0.5 cm, and three different gauges of current leads (cross-sectional area Aw). The relative decrease of Zm was found to vary approximately as sech [Formula: see text] with Aw and ls constant, as In Aw with As and ls constant, and as T4/s2 with Aw and As constant, where T is the absolute temperature. The variation with As and Aw appears to be due to conduction along the sample leads, while the variation with ls is well accounted for by radiation to and from the sample. With 40 A.W.G. wires, the error in the measured figure of merit is estimated to be about 5% for a sample of dimensions 0.5 × 0.5 × 1 cm and around 50% for a sample of size 0.1 × 0.1 × 2 cm.

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