Abstract

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COMPARISON OF THE EXPERIMENTAL PERFORMANCE OF A THERMOELECTRIC REFRIGERATOR WITH A VAPOUR COMPRESSION REFRIGERATOR

Krishpersad Manohar , Ademola Anthony Adeyanju


This study shows the experimental comparison between a commercial vapor compression refrigerator and a laboratory built thermoelectric beverage cooler. Tests were carried out to determine the time taken for the temperature of 325 ml of water in a glass jar to be reduced from 32oC to below 6oC. The result shows that in the freezer compartment of the commercial refrigerator, the temperature of the water decreased linearly with increasing time. However, for the thermoelectric refrigerator, the water temperature decreased exponentially with increasing time. In other words, cooling rate for the refrigerator was constant while for the thermoelectric it decreased exponentially. The study also shows that that in the freezer compartment of the commercial refrigerator the water took 61 min to cool to 6°C while the thermoelectric beverage cooler took 69 min. It can be seen that for the majority of the cooling time, the thermoelectric refrigerator was cooling at a faster rate than the commercial refrigerator.