1.Introduction
industrial gas turbines are used as electrical generators by both utilities and private industrial companies. In the 1960s and 1970s, utilities primarily used them to provide peaking power, that is, electricity at the highest demand periods of the day. In the 1970s and especially the 1980s, combined cycle applications became widespread, in which exhaust gases were used to make steam in a boiler, and this was used to generate additional electricity with a steam turbine or was used in industrial process plants. In Europe, stream or hot water is used for district heating purposes. Today, many simple and combined cycle gas turbine plants are being built to provide additional power and being built to provide additional power and to replace aging power plants all over the world. Nowadays the so-called 1500OC level combined cycle gas turbine have been developed, which can provide thermal efficiencies greater than 55%. Industrial gas turbines are also advantageous in that they can be purchased in modular units to reduce the financial risk associated with building large, conventional coal-fired stream or nuclear plants. Smaller industrial gas turbine are used as mechanical drives for numerous applications and to provide electricity in remote location