If you are looking for a specific model of turbine to base your simulation on, for example a Westinghouse 501F or a GE 207FA –D11, those figures for estimated thermal efficiency under ISO conditions can be found in the manufacturer’s literature, or in specific modeling software such as Gate...
Are you wanting to calculate the heat rate of the gas turbine itself or the heat rate of the combined cycle plant as a total heat rate? The Gas Turbine heat rate is easy, however the total plant heat rate depends on many factors and will require some effort.
Gas Turbine Heat Rate as follows...
Restarting a 9FA after a trip or normal shutdown, regardless of vintage is simply at the customer’s own discretion. GE directive is to restart the unit within 2 hours for minimal effects after a trip from full load. If the unit is not restarted within 2 hours then GE recommends the unit go on...
aafuni
To specifically answer your question it might help to post a part number and casting number as GE has many iterations of nozzle segements for all frame sizes / firing temperatures etc
Kind Regards
Romefu12
Online Compressor Washing can be evaluated by analyzing the Gas Turbine Output and Compressor Efficiency both before and after the washing. Be advised that this net gain is only temporary and will depend on many factors as to the effectiveness of inlet filtration, the operating environment...
npower0073
There is an issue with the 7FA units coupled to the 7FH2 Hydrogen Cooled Generators that the 9FA units may also be susceptible. The issue is that of the alignment elevation of the Generator. On the 7FA / 7FH2 configuration, the Generators were being lowered to account for an increase...
Iyabo
KKS tagging system, as far as I know is only taught by the OEM’s from Europe, That would be Siemens and ABB or Alstom Power. I was taught the system by both companies however I think there may be somewhere you can purchase a book to teach you. I would think if you were working in a power...
ppmsb
The event of the Fuel Gas Heater trip/fail is not necessarily detrimental to the GT if only occurring a few times. If the unit is setup correctly and depending on the unit model, for example a GE 7/ 9FA+e would simply perform a runback to a minimal pre-selected mode and load. However there...
QCE
Which Rotor are you speaking of?
I would assume that you are speaking of the thrust bearing being located below the generator rotor, with the turbine shaft and turbine runner hanging below?
If this is the case then in my opinion the theory of "gravity works" can be a blessing and a...
QCE
Your questions are a little vague, What type of Hydro Turbine are you speaking (by the over and under statement I would assume a Vertical Kaplan type Turbine?
Another question about the arrangement I would assume you are asking about the Combined Guide and Thrust Bearing being under the...
11Rookie11
Many years ago I began working the same field in auto mechanics as a hobby in High school. At that time I was also being trained as a Journeyman Machinist. I still work on all of my own vehicles. But if you don’t take this personally let me give you some advice that may help you...
EEINPA
Try contacting the Ozark Mountain Railcar Company at the following link.
http://www.ozarkmountainrailcar.com/ge80toncentercab.htm
They have an 80 ton GE Switcher for sale that still has the GHM-838 traction motors and may have a manual or a better nameplate.
Romefu12
MAH82
Flame instability can be cause by a number of issues. Much depends on the type of combustion system in use. You statement is that the instability occurs in pre-mix mode. Without knowing what manufacturer of gas turbine you are using and what combustion system you are using I can only say...
Stratford
Your L28FDD alarm indicates loss of flame in Can 8. However your HIGH EXHAUST TEMPERATURE SPREAD TRIP caused by Exhaust TC 17 indicates a swirl calculation @260 MW to indicate a problem with Can 4.
I would begin by borescope inspection of cans 3,4, 5, and 8.
Romefu12
