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 .