Design, Analysis and Experimental Validation of 1TR Dual Inverter Air Conditioner Using R32

In Air Conditioning application, it is very important to provide conditioned air at indoor side by maintaining the temperature, pressure, humidity, velocity and noise level of indoor air, by cooling and dehumidification psychrometric process when the outdoor side whether conditions are too hot and humid. To provide the conditioned cooling at indoor side through evaporative unit, the outdoor side unit having compressor along with condenser and expansion device should work efficiently according to vapor compression refrigeration cycle. Throughout this cycle, power consumption plays a crucial role. In conventional air conditioning systems, compressors were constant speed compressors and on off compressors, which consume more power respectively when compared to variable speed compressor i.e. inverter compressor. Here compressor is rotary type compressor. Inverter compressor works more efficiently by maintaining cooling capacity and consumes less power. Inverter compressor controls the motor drive speed input i.e. inverter controls the rotational speed of compressor by which we can control the quantity of refrigerant entering and leaving the compressor required to maintain the variable cooling capacity as per outdoor heat load conditions. The term dual inverter refers to two-stage compression of refrigerant using two rotors one after the other. The purpose of this paper is to discuss the performance evaluation of 1TR dual inverter air conditioner with two different refrigerants specified as 3 star model and five star model performed in psychrometric chamber. To validate the cooling capacity and reliability of the system, different temperature conditions are maintained at indoor and outdoor chambers. To determine the energy consumption for inverter air conditioner, ISEER (Indian Seasonal Energy Efficiency Ratio) should be calculated according to bureau of energy efficiency (BEE). Refrigerants R32 is used in 5 star model and R410A used in 3 star model.