In this paper, the performance of the Refrigerator is improved by controlling the fan speed on the condenser side or subcooling/superheating degree by superimposing the refrigerant on the inlet side of the compressor to the outlet side pipe. However, these methods may have the effect of lowering the performance due to operation of the severe condition of the main parts and may not achieve the intended performance. The Peltier Module was used to improve the performance of the refrigerator and increase the durability of the main parts through an artificial subcooling device.

The main objective of this work is to perform experimental analyses of a absorption refrigeration system using a new refrigerant-sorbent pair as the working pair. The active component of sorbent is sodium thiocyanate (NaSCN). Ammonia (NH3) is chosen as refrigerant. As a result of these, it is concluded that the unit exhibits good cooling performance and the average cooling capacity is approximately 28.8kW and the average coefficient of performance (COP) of absorption system is 0.56. The unit is a thermal compressor which uses low-grade waste heat to generate refrigeration (cooling or freezing).