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The GK10 gas turbine is a high-efficiency, heavy-duty machine developed fur power generation and echanical drive applications. This 10-megawatt gas turbine is being used in gas turbine transportation projects worldwide. A recent example is the San Fernando Pipeline Project in northern Mexico, where GE10-2 gas turbines are being used to drive six compressor trains.
When the first PGTlO gas turbine (the forerunner of the GElO) was developed, it was designed for robust operation, with the flexibility to accommodate future improvement in performance as gas turbine technologies evolved. These design margins resulted in the introduction in 1999 of the newer model GElO. In 2004, the technology lias further advanced through an initiative called the GKlO Performance Improvement Program (PIP).
Typically, the performance areas that are improved through technology upgrades arc output power, thermal efficiency and maintenance intervals. The current ISO ratings for the GElO PIP are the following:
These figures represent an increase in excess of 12% in output power and 1.3 points of efficiency compared to the PGTK), as well as an increase of 3.6% in output power and +1.0 points of efficiency compared to the GE10-2.
The GElO PIP is available as a retrofit kit to upgrade PGTlOs as well as GElOs. Two types of retrofit can be done:
* Minor Retrofit: This retrofit applies to both GEIO-2.S and PGTlOs. Advanced, high-tech seals are embedded and selected components of the exhaust diffuser are changed. The efficiency increase is 1.0 point while power increase is 3.6%.
* Major Retrofit: This retrofit applies to PGTlOs only. All the main gas turbine components (i.e. axial compressor, first stage hot parts, etc.) are changed to deliver the full 12% power increase. Advanced high-tech seals are embedded to contribute to the 1.3 points of efficiency enhancement. A technical analysis of the current configuration at the site is performed to determine the need to change other main components such as the load gearbox, electrical generator, and inlet and/or exhaust ducts.
GE10 PIP Technology
The GElO PIP includes a number of advanced features:
Axial Compressor - The compressor is a high-performance, 11-stage, axial-flow design with a 15.4:1 pressure ratio and 46.9 kg/s mass flow at ISO conditions. The design operating speed of the gas generator is 11,000 rpm. The rotor consists...