An experimental investigation on the effects of refrigerant circuiting on freezer performance

Abstract

Paper presented to the 10th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Florida, 14-16 July 2014.

In this study, the influence of the refrigerant circuiting on the performance of the refrigerator has been investigated experimentally. Since energy consumption of refrigerator or freezer is directly related to the evaporator efficiency in the cooling system, the circuitry design needs to be modified to improve the system performance. Experiments showed that lowest energy consumption and best cooling performance are achieved by evaporator with the refrigerant circuiting of 2-1-6- 5-4-3 which are the number of shelves. The result has been obtained under the thermal conditions as average temperature of package is -18.4ºC and highest package temperature is - 16.5ºC.