Package and Ducted Inverter Units
Package and Ducted Inverter Units
An inverter compressor is equipped with a variable frequency drive motor. The VFD drive controls the speed of the motor by changing the frequency. As speed is proportionate to frequency, it can be controlled to the desired level by varying the frequency. As the compressor speed changes, the refrigerant flow rate also varies thereby modulating the compressor capacity.
The compressor speed is higher when the cooling demand is more and is lower when the demand is less.
The combination of the two devices-Compressor & Drive – gives a continuous cooling modulation.
Advantages of Inverter Scroll Compressors
Lower running costs
The inverter compressor matches power input with cooling capacity requirement, resulting in reduced energy consumption.
Accurate temperature control
The inverter compressor copes effectively with changes in temperature by altering the speed to match the cooling demand. This provides a stable temperature control and greater comfort to the occupants of the air conditioned area.
High reliability
Due to lower compressor on/off cycles, reliability of the inverter scroll compressor is higher.
Low starting current
Low in-rush current helps in avoiding torque surges. This prevents high mechanical stress on the compressor and results in lower wear and tear.
Quick initial cooling
The variable frequency drive ensures that the compressor motor runs at a higher speed to produce more cooling that is required initially.
Better humidity control
Since the inverter scroll compressor is able to continuously adapt to the cooling demand, there is better control of the evaporating temperature and hence the relative humidity.
Blue Star Inverter Ducted System An innovative approach
This is a hybrid system designed with a variable capacity inverter scroll compressor in combination with one or two fixed scroll compressors. The inverter compressor always takes care of modulations in the loads. Innovative control logic takes care of the operation of compressor(s) at various load conditions.
As the inverter compressor always runs, modulation in load is taken care of and uniform cooling is always achieved, resulting in enhanced comfort for the occupants.
As there is ducting for uniform air distribution, the inside temperature is uniform throughout the air conditioned space. During part load conditions, the efficiency of the system improves further on account of higher evaporator and condenser size available for the lower load.
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