Abstract

Air conditioning is a major factor for the amount of power consumption in an infrastructure. Therefore it's important to improve the overall efficiency of the air conditioning system. Reducing the power consumption can decrease the demand for energy and lower the emission of greenhouse gases. In this paper, we present that the use of BLDC run fan for condenser in chiller system of air-conditioners will have better efficiency than the conventionally used induction motor. The rate of Air flow determines the temperature difference between the coolant entering the condenser and leaving the condenser. As the power loss in induction motor is higher than BLDC motor, higher speed can be obtained using BLDC motor than IM motor with same power rating. So, when speed increases the coefficient of performance increases. The simulation performed in CFD (computational fluid dynamics) software brings out the performance of BLDC motor and Induction motor, proving the better coefficient of performance with BLDC motor.

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