Mathematical model for capacity regulation of screw single-rotor compressor by capacity control in the form of rotary adjustment ring

Currently, robust and energy efficient screw compressors are in high demand. One of the promising trends in this filed is the development of the screw compressors with built-in capacity control. The article describes the design and operation principles of a built-in capacity control in the form of rotary adjustment ring for screw single-rotor compressor with a circular cut-off tooth. The calculation techniques for the volumetric capacity of screw single-rotor compressor during its regulation by mathematical modelling are described in detail. The results obtained contribute to the development and algorithmization of the theoretical base for the control of screw single-rotor compressor capacity.