The emf of a copper-iron thermocouple caused by the Seebeck effect, with a cold junction at \(0{ }^{\circ} \mathrm{C}\), is given by

\[\varepsilon=\alpha_{1} t+\frac{\alpha_{2}}{2} t^{2}+\frac{\alpha_{3}}{3} t^{3} \quad \mathrm{~V}\]

Transcribed Image Text:

where a = -13.403 x 10-6 V/C; a2 3 +0.0275 x 106 V/(C); +0.00026 10 6 V/(C); and t=temperature (C). If the hot junction is at t = 100 C, calculate a. the Seebeck emf; b. the Peltier effect at the hot and cold junctions; c. the net Thomson emf; d. the difference between the entropy of transport of the copper and iron. [1.116 mV; 3.66 mV; 3.00 mV; *; -8.053 10 6 V]