Experimental investigation on the performance of domestic refrigeration systems with mixed refrigerants using data acquisition system (DAQ)

The use of mixed refrigerants in the domestic refrigeration system can enhance the cooling effect as reported in the literature. Hence, in the present work, two refrigerants are chosen (R-290 and R-600a) to evaluate the performance of evaporator of domestic refrigerators. The refrigeration cycle consists of four major processes. The isentropic compression in the compressor, isobaric heat rejection in the condenser, isenthalpic reduction in pressure and isobaric heat addition in the evaporator. The present work aims at investigation of cooldown time of the evaporators with mixed refrigerants (R-290 and R-600a) using the DS18B20 thermocouple sensor data logger with arduino open source electronic platform with utmost accuracy.