Fixed Speed Air Compressors

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Fixed Speed Air compressors operate with a constant state of production that the machine runs at a specific RPM whenever the machine is under load. These rotary screw compressors are either on and under load or are not operating and have no difference in rotation speed, with a fixed voltage and frequency to the motor. This type of compressor is beneficial to consistent production in plants that have a constant energy need and there are no significant fluctuations in production cycles.    These compressors fill the storage tanks and once it reaches a set pressure, the motor will shut off, and then once the air is depleted or reaches a set value it will start running again and refilling the air. These compressors start and stop frequently when they are not under more constant demand and this can cause a lot of energy consumption.    Fixed Speed Compressors are rotary screw compressors that compress air with positive displacement rotary mechanisms. They use a constant stream of compression to create the compressed air and are done so through male and female rotor heads, with the male rotor having fewer lobes and spinning faster in comparison to the female head. 
Atlas Copco

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