What is a rotary screw air compressor?

A rotary screw air compressor is one of the two types of positive displacement gas compressors. It uses two rotors to create the pressure needed for air compression. They are one of the easiest types of air compressors to use and maintain. The other type of positive displacement compressor is the reciprocating or piston compressor.

How does a screw type compressor work?

Screw type compressors have two interlocking helical rotors within its housing. Air from the surroundings is introduced into the compressor through the inlet valve (blue), and is trapped between the two rotors. The screws turn and “compress” the air, reducing the volume while increasing the pressure of the air (red).

How much water does a rotary screw air compressor produce?

For example, a 110kW (150HP) rotary screw air compressor which operates in 27 °C temperature with 75% relative humidity (Ho Chi Minh average temperature) will produce 120 liters of water per day. For factories that are located near the ocean, the amount of water produced might be even higher.

What are the applications of screw compressors?

Applications of screw compressors are as follows ; 2) Pressure ratio: less than 3 bar in one stage and up to 12 to 14 bar in two stages. 3) It is used in industrial refrigeration. A screw compressor is a type of rotary compressor which compresses air due to screw action.

Are screw compressors oil-free?

Consequently, the compressed air is completely oil-free. The built-in pressure ratio is limited by the limiting temperature difference between the inlet and the discharge. This is why oil-free screw compressors frequently work in several stages and interstage cooling to reach higher pressures.

How does a water compressor work?

For factories that are located near the ocean, the amount of water produced might be even higher. As discussed above, the compressor takes in air from the surroundings and compresses it, increasing its pressure for end-use application.