The direct conversion of the thermoelectric effect is temperature differences to electric voltage and vice versa. The thermoelectric effect is three separately identified effects are the see beck effect, Thomson effect, and the Peltier effect. The present objective work present experimental and mathematical investigation to pick up the efficiency and lower the manufacturing cost of thermoelectric refrigeration system. The discussed of the performance of thermal characteristics and the various parameter like thermal performance. A Peltier effect refrigeration system is the designed, fabricated and the tested at the various parameters. The various parameters in to improve the efficiency and lower the manufacturing cost of thermoelectric refrigeration system, the system thermoelectric refrigerator is fabricated of 28.5cm X 26cm X 18 cm and supplied power of 18W to 90W. The temperature of thermoelectric refrigerator system was measured at four points i.e. Tc Temperature at refrigerator, Th Temperature at outer wall, Tbox Temperature of box & Tdoor temperature at door. The differential temperature, time, and coefficient of performance were analyzed. Results the Tc was decreased from 28 ºC to –3.2 ºC for 45 min and also continuously decreasing with respect to time. The maximum coefficient of performance of Peltier effect refrigeration system was 6.85 -0.59 at various parameters.

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