Sonic Block Silencing for Axial and Screw Type Compressors

Numerical Investigation on Compressible Flow Characteristics in Axial Compressors Using a Multi Block Finite Volume Scheme

An unsteady two-dimensional numerical investigation was performed on the viscous flow passing through a multi-blade cascade. A Cartesian finite-volume approach was employed and it was linked to Van-Leer's and Roe's flux splitting schemes to evaluate inviscid flux terms. To prevent the oscillatory behavior of numerical results and to increase the accuracy, Monotonic Upstream Scheme for Conservat...

Optimisation of Screw Compressors

Increasing demands for more efficient screw compressors require that compressor designs are tailored upon their duty, capacity and manufacturing capability. A suitable procedure for optimisation of the screw compressor shape, size, dimension and operating parameters is described here, which results in the most appropriate design for a given compressor application and fluid. It is based on a rac...

A CAD System for Twin-Screw Compressors

Thie paper introduc11 the theoretical atad1 aad practical application• of a cOJDpubr-aided duiga I CAD) 171hm far twia-nrew compreuora. The 171hm include• three parte: the ealeul~tion of the reometrical param1ter1 of the rotou: the • imulatioa of Ue compru1or workilir procUIIIi and Ue optimi$&tion of the design parameter• of the campreeeor. The 171tem has been uaed in the de1irn of ee,eral air ...

Screw Compressors for Heat Pump Application

Rating Technique for Refrigeration Twin-Screw Compressors

The twin-screw compressor is constantly attaJ.ninq hiqher performance due to new rotor profiles, new rotor manufacturing technology and new designs. Besides this, new refrigerants as well as new lubricants can be expected on the market. Therefore there is always a need to update performance data. To m1nimize the number of test points and still receive representative data, there 1s a need of an ...