Axial- und Radialkompressoren

Design Concept and Performance of a Multistage Integrally Geared Centrifugal Compressor Series for Maximum Efficiencies and Operating Ranges

“…The first impeller family has a blade exit angle of 62 = 50° relative to the tangential direction. With this blade angle the maximum stage efficiencies are reached in the present application range [1]. Simultaneously operating range, location of optimum efficiency on the operating characteristic curve and rise of the characteristic line towards the surge limit are optimized.…”

Optimisation of Boosting Stage and LP EGR System through Pre-swirl Throttle

“…By applying positive pre-swirl there are two other basic effects at the compressor's inlet: the inlet relative velocity is reduced and the total wheel work is reduced. The first effect can lead to an efficiency increase since the reduced velocity in the blade channel reduces friction losses [2]. Due to the reduced wheel work, the compressor has Reference map contour IST map contour δη is = η is IST -η is reference to run at higher speeds in order to achieve the desired pressure ratio.…”

Design and Experimental and Numerical Verifications of the Recirculating Blower for Long-Term Tests of Turbine Flowmeters

“…An application of the impeller in such a configuration causes that a flow is more complex and is characterized by higher dissipation of energy. Therefore, a classical 1D design method [5] requires adjustments of some coefficients on the basis of experimental data [7], [8].…”