A
we are operating two frame 5 gas turbines having power output of 18MW (base output of each turbine). Few years back we removed the atomizing air compressor from both the turbines due to maintenance issues. Recently we restored the compressor on one of our turbine. This new AA compressor proposal and installation kit was procured from GE including engineering of piping. Piping modification only includes the orientation and modification of suction and discharge nozzles. After startup, the discharge temperature of AA compressor reached to 190 degree C. While this temperature used to be 75 degree C before the removal of old compressor. CPD inlet pressure and temperature are the same. The major difference in new and old AA compressor is the type of compressor. the old compressor was screw type, while new compressor is centrifugal compressor.
Please advise the reason of high discharge temperature of new AA compressor.
Please advise the reason of high discharge temperature of new AA compressor.