gas turbine

One of the most innovative solutions for making gas turbines more cost-effective is through optimised turbine blades and vanes.

Energy is undoubtedly a key cornerstone in economies globally. It lies at the heart of both developing and developed countries’ production of goods and services across all economic sectors. Be it agriculture, mining, manufacturing, transportation, or public administration, societies rely on sustainable and reliable energy supply. To this end, Siemens continues to develop innovative products and solutions for these countries to meet and sustain their energy demands. In the power generation field in particular, Siemens has developed a reliable and tested product family of SGT-2000E gas turbines deployed in many plants in the world, amongst them in Nigeria, Egypt and South Africa.

Si3DTM = Siemens innovative 3

Dimensional One of the most innovative solutions for making SGTx-2000E gas turbines more competitive and more cost-effective is the Si3D upgrade product. Si3D stands for “Siemens innovative 3D” optimised turbine blades and vanes, developed for all four stages of the turbine section.

The profile of the Si3D blades and vanes is aerodynamically optimised, significantly improving power output and fuel efficiency. This blading generation also features enhanced materials and coating, an improved cooling air path, and optimised cooling air demand.

The Si3D upgrade has been introduced into the market step by step. While the earlier turbine blading upgrades comprised only retrofitting stages 1 and 2 with Si3D, the full Si3D package for stages 1 to 4 has been available since 2008.

Performance benefits

Retrofitting Si3D turbine blades enables the achievement of the following power output and efficiency improvements:

Turbine stages 1 and 2:

• Gas turbine power output increased by up to 5MW* or more
• Gas turbine efficiency improved by up to 0.7% points* or more

Turbine stages 3 and 4:

• Gas turbine power output increased by up to 7MW* or more
• Gas turbine efficiency improved by up to 0.7% points* or more *

Actual results may vary depending on local site conditions, ambient conditions and temperature settings.

With a full Si3D turbine upgrade of all four turbine stages, gas turbine efficiency will be increased in combination up to 1.4% points, or more than 4%, and power output can be increased by..

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