515
14.1 Construction Forms and Applications
turbocharger of Fig. 14.7, but with one or two axial stages upstream of the radial
compressor and addition of a power turbine stage.
The operating range of a compressor is small with small backward sweep and
high peripheral speed. Flow rate decrease compared to the design flow rate rather
quickly brings the operating point to the maximum of the characteristic curve and
so to surge. Flow rate increase rather quickly leads to choking. The application
therefore should allow a narrow operating range. Mostly, there is no problem with
a narrow operating range for an air compressor and for compressors in small gas
turbines.
Fig. 14.5 Cross sections
of the vaned chambers for
inlet to ( left) and outlet from
( right) the radial rotors of
Fig. 14.4
Fig. 14.6 High-pressure
10-stage centrifugal compressor for CO 2 with integrated
gearbox (courtesy MAN
Diesel & Turbo)
14.1 Construction Forms and Applications
turbocharger of Fig. 14.7, but with one or two axial stages upstream of the radial
compressor and addition of a power turbine stage.
The operating range of a compressor is small with small backward sweep and
high peripheral speed. Flow rate decrease compared to the design flow rate rather
quickly brings the operating point to the maximum of the characteristic curve and
so to surge. Flow rate increase rather quickly leads to choking. The application
therefore should allow a narrow operating range. Mostly, there is no problem with
a narrow operating range for an air compressor and for compressors in small gas
turbines.
Fig. 14.5 Cross sections
of the vaned chambers for
inlet to ( left) and outlet from
( right) the radial rotors of
Fig. 14.4
Fig. 14.6 High-pressure
10-stage centrifugal compressor for CO 2 with integrated
gearbox (courtesy MAN
Diesel & Turbo)