Investigating the Effect of an Ambient Temperature on the Performance of domestic coolers (Case Study: Household Refrigerator type Beko)

Abstract

Refrigeration is one of the most important requirements of life, as no modern home is without cooling instruments, whether refrigerators for storing food, or domestic air conditioners. A home refrigerator is a refrigeration device that uses electrical energy to do work to produce cooling. To maintain the performance of a refrigerator, there is a need to understand the performance coefficient of the refrigerator if the outdoor temperature is varied.

In this research, the experiment work utilized a BECO house hold refrigerator as a model to study the effect of ambient temperature on the performance coefficient, the working refrigerant gas for this unit is an R-134a refrigerant. The setup included sensors in specific locations to measure the main parameters such temperatures, refrigerant pressures (low and high). From the practical results obtained, the parameters of the refrigerator’s performance inside the room were calculated at varying degrees (20^oC to 38^oC) and at different times of the day.

The results obtained from this study showed that the average calculated performance coefficients decreased with increasing room temperature, and that the performance coefficient reaches its highest value at lower room temperature.