Abstract: A refrigeration system includes a compressor, a condenser, an expansion device and an evaporator connected in a closed circuit through which a refrigerant is circulated. A portion of liquid refrigerant exiting the condenser is diverted through a secondary expansion valve and a heat exchanger, which is thermally coupled between compressor and condenser, thereby allowing the superheated refrigerant vapor to be cooled at a temperature at or close to its saturation temperature when it enters the condenser. Hence, a de-superheating process inside the condenser is eliminated, and the condenser operates more efficiently, resulting in increased subcooling and thus increased cooling capacity. Also, the more efficient condenser decreases condenser pressure, a phenomenon which results in the reduction of the compressor work and accordingly increases the efficiency.