Aeroderivative and Industrial Gas Turbine

Gas Turbine

In oil and gas industries, gas turbine is one of common driver to drive booster centrifugal compressor or generate your power as generator set. Solar turbine, GE and Roll Royse are very known manufacturer of gas turbine.

At this time,It would like to discuss and try to summary what is the basic different between industrial and aeroderivative gas turbine.

Aeroderivative Engines,

It is designed for air craft application and modify to be used in industry. These type of engine requires high thrust at full load, good part load efficiency and low weight. So, multi spool/shaft design with high rotational speeds and a comparatively high compressor pressure ratio.

It has rolling element bearing, fabricated casing,two separate oil systems ( gas turbine and driven equipment), high firing temperature, higher efficiency ( 38 % to 40 %), better fuel consumption, higher NOX and CO.

Industrial Engines,

It is designed for land use where size and weight are less important than aeroderivative design. 

Robust design, hydrodynamic bearing, cast main casing,common lube oil system, lower firing temperatures, lower efficiency ( 30 to 33 %), lower emission than other engines.

The key point in selection gas turbine is based on economical and operational advantage. For the same power, aero derivative engine may offer more compact design compare to industrial gas turbine. Since aeroderivate use more advance material and technology, so it contributes the capital investment / KW Power more expensive than industrial gas turbine. These condition may be the reason why industrial gas turbine is more favourite to be selected and used in Oil and gas Industry.