Combined cycle systems for near-zero emission power by Ashok D Rao

By Ashok D Rao

Mixed cycle strength vegetation are probably the most promising methods of bettering fossil-fuel and biomass strength creation. the combo of a fuel and steam turbine operating in tandem to supply energy make this kind of plant hugely effective and enables CO2 trap and sequestration sooner than combustion. The editor and members offer a complete evaluation of the layout, engineering and operational problems with a number complicated mixed cycle plants.  After introductory chapters on easy mixed cycle energy plant and complicated fuel turbine layout, the ebook experiences the most forms of mixed cycle approach. Chapters speak about the know-how, potency and emissions functionality of typical gas-fired mixed cycle (NGCC) and built-in gasification mixed cycle (IGCC) in addition to novel humid air cycle, oxy-combustion turbine cycle structures. mixed cycle structures for near-zero emission energy iteration is going directly to assessment pressurized fluidized mattress combustion (PFBC), externally fired mixed cycle (EFCC), hybrid gas telephone turbine (FC/GT) mixed cycle and built-in sunlight mixed cycle (ISCC) platforms. the ultimate bankruptcy offers a techno-economic research of mixed cycle platforms.  

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2. 3. 4. Advanced gas turbines HRSGs Steam turbines Condensers. In the traditional combined cycle plant, air enters the gas turbine where it is initially compressed and then enters the combustor where it undergoes a very rapid increase in temperature at constant pressure. The high-temperature and HP air then enters the expander section where it is expanded to nearly atmospheric conditions. This expansion creates a large amount of energy, which is used to drive the compressor used in compressing the air, plus the generator where power is produced.

In cross-compound arrangements the rotors can rotate at different speeds but cannot operate independently as they are aerodynamically coupled. The cross-compound design is inherently more expensive than the tandem-compound design, but has a better heat rate, so that the choice between the two is one of economics. 27d shows a turbine setup where there are three casings, each with their own generator, and a reheat boiler (RHB) between the HP and the IP section. 28 is a schematic of a three-section steam turbine in two casings.

Proceedings of the 6th EPRI Steam Turbine Generator Workshop, EPRI, Palo Alto, CA. August 1999. © Woodhead Publishing Limited, 2012 2 Advanced industrial gas turbines for power generation M. P. BOYCE, The Boyce Consultancy Group, LLC, USA Abstract: The chapter explores new trends in combined cycle power plants. The effects of major parameters such as temperature and pressure ratio on plant efficiency, power and operational ability are fully investigated. The characteristics, relationships and effects, both practical and theoretical, of each of the plant’s major components are discussed.

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