Effects of subcooler on cooling performance of inverter variable refrigerant flow (IVRF) type air conditioning system: A Review

Thermal Engineering

Inverter Variable Refrigerant Flow system has emerged as one of the promising candidate for the near future, in the heating, ventilation and air conditioning (HVAC) area. This review study presents a detailed overview of the configurations of the outdoor and indoor units of a variable refrigerant flow (VRF) system, and its operations, applications and cost. Besides, a detailed review about the effects of subcooler on cooling performance of inverter variable refrigerant flow (IVRF) type air conditioning system. According to detailed review, it is observed that the compressor frequency and the electronic expansion valve opening should be controlled simultaneously for the control strategies, and it is concluded that VRF system not only consumes less energy but also provides better indoor thermal comfort as long as it is operated in the individual control mode. In detailed review it is also observed that subcooling technique with inverter variable refrigerant flow (IVRF) air conditioning (AC) system helps in improving the energy efficiency, reliability and stability of the system.

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