Performance optimization analysis of a thermoelectric refrigerator with two resonances

Based on electron transport theory, the performance of k_x and k_r filtered thermoelectric refrigerators with two resonances are studied in this paper. The performance characteristic curves between the cooling rate and the coefficient of performance are plotted by numerical calculation. It is shown that the maximum cooling rate of the thermoelectric refrigerator with two resonances increases but the maximum coefficient of performance decreases compared with those with one resonance. No matter which resonance mechanism is used (k_x or k_r filtered), the cooling rate and the performance coefficient of the k_r filtered refrigerator are much better than those of the k_x filtered one.