Abstract
In this study, a portable mini thermoelectric refrigerator driven by a Peltier element is designed, constructed and tested. The Peltier element combined with fans on both sides is mounted onto a refrigerator box. An optimization for the operating conditions of the thermoelectric refrigerator is performed. The operating conditions of the system are the ambient temperature and voltages of the fans and Peltier element. Performance analysis for the optimum conditions obtained is presented. Results show that the optimum voltages of the Peltier element, inner and outer fans maximizing the cooling coefficient of performance of the system (COP) are 12 V, 3 V and 9 V, respectively. The optimum ambient temperature is 293 K. Results also show that the cooling COP of the system decreases from 0.351 to 0.011 while the temperature of the cooled space changes from 293 K to 254.8 K. The proposed thermoelectric refrigerator is used to keep drinks, foods or medicines fresh and cool.
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