Trane TRG-TRC004-EN Air Compressor User Manual


  Open as PDF
of 55
 
TRG-TRC004-EN 15
period one
Compressor Types
notes
This chart plots the conversion of energy that takes place as the refrigerant
passes through the centrifugal compressor. In the radial passages of the
rotating impeller, the refrigerant vapor accelerates, increasing its velocity and
kinetic energy. As the area increases in the diffuser passages, the velocity, and
therefore the kinetic energy, of the refrigerant decreases. This reduction in
kinetic energy (velocity) is offset by an increase in the refrigerant’s static energy
or static pressure. Finally, the high-pressure refrigerant collects in the volute
around the perimeter of the compressor, where further energy conversion takes
place.
In this example centrifugal compressor, refrigerant vapor is drawn into the
compressor and enters the center of impeller. This particular centrifugal
compressor uses multiple impellers to perform the compression process in
stages. The impellers rotate on a common shaft that is connected to the motor.
&HQWULIXJDO&RPSUHVVRU
UHIULJHUDQW
UHIULJHUDQW
HQWHUV
HQWHUV
GLIIXVHU
GLIIXVHU
SDWKWKURXJKFRPSUHVVRU
SDWKWKURXJKFRPSUHVVRU
YHORFLW\
YHORFLW\
VWDWLFSUHVVXUH
VWDWLFSUHVVXUH
UHIULJHUDQW
UHIULJHUDQW
HQWHUVYROXWH
HQWHUVYROXWH
UHIULJHUDQW
UHIULJHUDQW
HQWHUVLPSHOOHU
HQWHUVLPSHOOHU
Figure 22
&HQWULIXJDO&RPSUHVVRU
PRWRU
PRWRU
LPSHOOHU
LPSHOOHU
VXFWLRQ
VXFWLRQ
LQOHW
LQOHW
YDQHV
YDQHV
Figure 23
 previous next