Frame 3 starting systems
Frame 3 starting systems
(OP)
Hi,
we have a gas turbine GE Frame 3 that is started by a diesel engine and we want to study the possibility of changing the system to a pneumatic starter.
what I don't understand is why does the diesel engine has a torque converter even though its torque is usually higher than an air starter.
when I calculated the starting torque of the existing diesel engine (with the torque converter multiplication taken in considiration). I found it about 1330 lb-ft. But all the pneumatic starters that I have seen have a max starting toque of around 520 lb-ft.
so how can pneumatic starters breakaway the gas turbine and is there any device between the starter and the turbine that encreases the torque.
we have a gas turbine GE Frame 3 that is started by a diesel engine and we want to study the possibility of changing the system to a pneumatic starter.
what I don't understand is why does the diesel engine has a torque converter even though its torque is usually higher than an air starter.
when I calculated the starting torque of the existing diesel engine (with the torque converter multiplication taken in considiration). I found it about 1330 lb-ft. But all the pneumatic starters that I have seen have a max starting toque of around 520 lb-ft.
so how can pneumatic starters breakaway the gas turbine and is there any device between the starter and the turbine that encreases the torque.





RE: Frame 3 starting systems
Since you have an apparently good and serviceable diesel engine starting system, why mess around with changing to something else? Unless there is some compelling reason that you have not mentioned, I doubt that there will be any sufficient economic or operating reason to implement such a change.
Valuable advice from a professor many years ago: First, design for graceful failure. Everything we build will eventually fail, so we must strive to avoid injuries or secondary damage when that failure occurs. Only then can practicality and economics be properly considered.
RE: Frame 3 starting systems
RE: Frame 3 starting systems