The material properties of the thermoelement used in this work are a = 2.0 104 V/K, q = 1.0 105 X m and k = 1.5 W/(m K). The cross-sectional area of a thermoelement A = 1.0 106 m2. It is assumed that the thermal and electrical contact resistances at the hot side are equal to those at the cold side, respectively. In other words, rtc = rth and rec = reh.