What is the primary function of a rotary screw compressor?

The primary function of a rotary screw compressor is to compress fluids, specifically gases. This type of compressor utilizes two interlocking helical screws to compress the air or gas as it moves through the machine. The design of the rotary screw allows for a continuous flow of air or gas, making it highly efficient for compressing large volumes without significant pulsation.

While options like reducing temperature, increasing pressure, and controlling flow rate are related aspects of a compressor's operation, the fundamental purpose remains focused on the compression of gases. By compressing the gas, the rotary screw compressor effectively increases the pressure, which in turn can impact temperature and flow rate, but these are not the primary functions. The design and operation of rotary screw compressors ultimately revolve around their ability to compress fluids effectively, making it the correct choice.