Optimisation Techniques Applied to the Design of a Refrigeration TiN Screw Compressor

Some results from a procedure for optimising the geometrical parameters of a refrigeration twin screw compressor, such as the basic geometrical parameters of its profile and the position of its discharge port etc., were presented by the authors at the International Compressor Engineering Conference at Purdue, 1992. In this paper the optimisation technique is developed by making use of programs developed by the authors and measured values derived from compressor tests. The optimisation technique discussed here concentrates on the rotor and compressors parameters, such as wrap angles, length/diameter ratios of rotors and slide valve definition parameters etc.