GroupV Base oils

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The question was to determine if the statement was true or false.

The statement is False on its face, but it has many implications.

Not all Group V base oils (see the list above) are suitable or superior for any or all applications.
 
Originally Posted By: Shannow
Originally Posted By: A_Harman
I was hoping for a manufacturer and model designation so I could look it up...


Try this one

http://www.alstom.com/Global/Power/Resources/Documents/Brochures/gt24-and-gt26-gas-turbines.pdf

Interesting how the combustion process is spread into high and l;ow pressure combustors to control blade temperature and keep efficiency high.


Wow. That's a lot different than the aircraft gas turbines I'm used to looking at. I'd never seen or heard of staged combustion in a gas turbine. I wonder what the inlet gas temperatures are at the HP and LP turbines.
 
Not entirely sure, but they are remarkable advanced compared to the old 25MW GEs I got to play with in 1990, pretty sure that they were aero derivative and ship board things.

This article has some more detail, with the differences.

http://www.power-technology.com/projects/aghada/

The heat rate even on the GT only portion is exceedingly impressive.

34:1 pressure ratio, and 616C exhaust gas temperature...maxes out at 2,000C isentropic working backwards...that's obviously too high inefficiencies provide higher exhaust temperatures for a given inlet temp.

http://e-collection.library.ethz.ch/eserv/eth:29954/eth-29954-02.pdf

2007, 2250K was reported in jet engines.

Some more information therein on the Gt26
 
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