Today is...
Wednesday, June 26, 2019
Welcome to Control.com, the global online
community of automation professionals.
Featured Video...
Featured Video
EtherCAT with CTC’s master lets your multivendor network play well together...
Our Advertisers
Help keep our servers running...
Patronize our advertisers!
Visit our Post Archive
Aero Derivative Engines
PGT25+G4 DLE & PGT25+G4 SAC engines
By shahabas on 16 May, 2019 - 6:34 am

What is the difference between PGT25+G4 DLE & PGT25+G4 SAC engines?

This was the first result found using my preferred World Wide Web search engine and the search term: PGT25+G4

https://www.geoilandgas.com/sites/geog/files/pgt25g4-aeroderivative-gas-turbine-flyer.pdf

DLE stands for Dry Low Emissions, and it's the aero-derivative version of DLN (Dry Low NOx). It includes additional fuel control valves, and I think the combustors are multi-zone (at least they were in the early days of development).

SAC stands for Single Annular Combustor, and it's usually a simple, single annular combustor with one combustion zone. To achieve low NOx emissions it's usually necessary to use water- or steam injection (which adds somewhat to the complexity of the auxiliaries).

Other than that, I believe they are basically the same engine--one has the DLE combustion system for low emissions without water- or steam injection (at least for gas fuel), and the other is a "plain" combustion system which must use water- or steam injection for low emissions.

Hope this helps!

By the way, I also found this site (which I personally hadn't run across before):

https://etn.global/about-etn/gas-turbine-technology/gas-turbine-products

Looks like a good way to quickly compare lots of different products for lots of different manufacturers.