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See discussions, stats, and author profiles for this publication at: Gas Turbine Working Principles Chapter · March 2015 DOI: 10.1007/978-3-319-15560-9_7 CITATIONS 0 READS 44,457 1 author: Some of the authors of this publication are also working on these related projects: I am working on cloud computation and mathematical modeling of Fuzzy logic in cloud data warehousing and datamining View project Business Resilience System (BRS): Driven Through Boolean, Fuzzy Logics and Cloud Computation: Real and Near Real Time Analysis and Decision Making System View project Bahman Zohuri University of New Mexico 360 PUBLICATIONS 532 CITATIONS SEE PROFILE All content following this page was uploaded by Bahman Zohuri on 20 August 2018. The user has requested enhancement of the downloaded file.
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Chapter 7 Gas Turbine Working Principals Gas turbine engines derive their power from burning fuel in a combustion chamber and using the fast-flowing combustion gases to drive a turbine in much the same way as the high-pressure steam drives a steam turbine. A simple gas turbine is comprised of three main sections: a compressor, a combustor, and a power turbine. The gas turbine operates on the principle of the Brayton cycle, where compressed air is mixed with fuel and burned under constant pressure conditions. The resulting hot gas is allowed to expand through a turbine to perform work. 7.1 Introduction As the principle of the gas turbine, a working gas (air) is compressed by a compressor and heated by combustion energy of the fuel at the first. The working gas becomes the high temperature and high pressure. The engine converts the energy of working gas into the rotating energy of the blades, making use of the interaction between the gas and the blades. As shown in the below figure, there are two types of gas turbine. One is the open cycle type (internal type) and another is the closed cycle type (external type). Basic components of both types are the air compressor, a combustor, and the turbine. The gas turbine can handle a larger gas flow than that of the reciprocating internal combustion engines, because it utilizes a continued combustion. Then the gas turbine is suitable as the high power engine. The gas turbine for airplanes (called a jet engine) makes use of this advantage. As we said at the beginning of this chapter, the gas turbine operates on the principle of the Brayton cycle and one variation of this basic cycle is the addition of a regenerator. A gas turbine with a regenerator (heat exchanger) recaptures some of the energy in the exhaust gas, preheating the air entering the combustor. This cycle is typically used on low-pressure ratio turbines, and the resulting hot gas is allowed to expand through a turbine to perform work. In a 33% efficient gas turbine, almost © Springer International Publishing AG 2018 B. Zohuri, P. McDaniel, Combined Cycle Driven Efficiency for Next Generation Nuclear Power Plants , 149
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