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Industrial gas turbine SGT-800 Power generation: 47.5-54 MW(e) 47.5 MW Version Gross efficiency: 37.7% Heat rate: 9,547 kJ/kWh (9,084 btu/kWh) Turbine speed: 6,608 rpm Pressure ratio: 20.1:1 Exhaust mass flow: 132.8 kg/s (292.8 lb/s) Exhaust temperature: 541°C (1,007°F) 50.5 MW Version Gross efficiency: 38.3% Heat rate: 9,389 kJ/kWh (8,899 btu/kWh) Turbine speed: 6,608 rpm Pressure ratio: 21.0:1 Exhaust mass flow: 134.2 kg/s (295.8 lb/s) Exhaust temperature: 553°C (1,027°F) 54.0 MW Version Gross efficiency: 39.1% Heat rate: 9,206 kJ/kWh (8,725 btu/kWh) Turbine speed: 6,608 rpm Pressure ratio: 21.4:1 Exhaust mass flow: 135.5 kg/s (298.7 lb/s) Exhaust temperature: 563°C (1,045°F) siemens.com/gasturbines
Siemens’ SGT-800, a proven distributed generation turbine for Africa! Whatever the power generation requirements may be, Siemens, a global engineering powerhouse has the right combination of technology, solutions and skills to meet the requirements, and yes, often exceed. Siemens gas turbines are precisely designed to master the dynamic African energy market environment. Low lifecycle costs and an excellent return on investment right from the start are just two of the benefits that Siemens gas turbine portfolio offers. Mark Van Antwerp, Vice President of Power & Gas Sales for Southern and Eastern Africa at Siemens says: “Our gas turbines fulfil the high requirements of a wide spectrum of applications in terms of efficiency, reliability, flexibility and environmental compatibility. There has been a major shift in the market from centralised power generation to distributed generation. At Siemens we believe that this is a trend much to the benefit of Africa as the electrification levels are still low. One of our innovative products is the SGT-800. This machine is getting a lot of attention in the continent primarily because it offers broad flexibility in fuels, operating conditions, maintenance concepts, package solutions, and ratings.” The excellent efficiency and steam-raising capability make it outstanding in cogeneration and combined cycle installations. The SGT-800-based power plant, designed for flexible operation, is perfectly suited as grid support. The SGT-800 combines a simple, robust design, for high reliability and easy maintenance, with high efficiency and low emissions. With more than 300 units sold and over 4 million equivalent operating hours, it is an excellent choice for the African markets. Matthieu Cecillon, Vice President of Application Engineering for Sub-Saharan Africa at Siemens says: “The Siemens SGT-800 gas turbine is available in three versions with power output of 47.5, 50.5 and 54.0 MW respectively. The gas turbine combines a robust, reliable design with high efficiency and low emissions. This makes it an ideal choice for municipal and industrial power generation, refineries, and the oil and gas industry. Its high exhaust energy content makes the Siemens SGT- 800 particularly well suited for combined heat and power and combined-cycle applications. Reliability, environmental compatibility, and low lifecycle costs are the key features of the Siemens SGT-800: With up to 60,000 operating hours (EOH) between major overhauls, low maintenance costs, and an excellent electrical efficiency, the Siemens machine achieves the lowest lifecycle costs and the best combinedcycle efficiency within its class.” The Siemens SGT-800 is a single-shaft machine with 15 compressor stages. The first three stages have variable guide vanes. To minimize leakage over the blade tips, abradable seals are applied to stages four to fifteen. The three-stage turbine is built as one module and is bolted to the compressor shaft to provide for easy maintenance. The turbine stator flanges are air-cooled to reduce running clearances and improve efficiency. The overall design of the Siemens SGT-800 gas turbine ensures easy service access to the combustor and the burners. The cold end of the gas turbine is connected to the generator via a reduction gear unit; this reduces the turbine speed from 6,600 rpm down to 1,500/1,800 rpm. The Siemens SGT-800 gas turbines are equipped with Dry Low Emissions (DLE) combustion system to reduce nitrogen oxide emissions. The combustion system is designed to operate on both gas and liquid fuels and it’s capable of on-line switchover between fuels.
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