Pratt and Whitney FT8 Gas Turbine

[deco]

Pratt and Whitney are trying to sell us an FT8 Gas Turbine which was designed for 50 hz. Our system is a 60 hz system. The FT8 is designed such that the power turbine is a free power turbine, ie. it is only aerodynamically linked to the gas generator. What are the issues we should be concerned about if any?? deration? effciency?? Please give some advice.

 

[ferdo]

If your system is a 60 Hz project, the output revolution of your reduction gear unit must fit the revolution of the electric generator in order to obtain those 60 Hz. That means, of course, you will have a different efficiency (a small difference). Otherwise, you will not have any problem. In conclusion, your problem is in fact the reduction gearbox. unit.

 

[dionysius]

I'm running an LM5000 with power turbine for 60hz application. It should be just a control issue to get the speeds up for 60hz operation, unless the PW power turbine is specifically designed for 50hz.

Is this a twinpac application with the FT-8?

Denis