What is combined-cycle steam turbine?

A combined-cycle power plant uses both a gas and a steam turbine together to produce up to 50% more electricity from the same fuel than a traditional simple-cycle plant. The waste heat from the gas turbine is routed to the nearby steam turbine, which generates extra power. Tour a combined cycle power plant.

What is a 2×1 combined-cycle?

2×1 configuration of combined cycle plants In this configuration, the plant has two gas turbines of the same capacity, each connected to its own generator, and the gas is fed to two independent heat recovery steam generators (HRSG). However, this configuration has some disadvantages.

What is a combined-cycle unit?

Combined cycle units are made up of one or more such gas turbines, each with a waste heat steam generator arranged to supply steam to a single or multiple steam turbines, thus forming a combined cycle block or unit.

What is GT plant?

7.1. A simple gas turbine plant is being modified by introducing a boiler in the turbine exhaust which recovers a part of the heat and feeds it into an absorption refrigeration system (Fig. 5.22). The cooling effect produced in the absorption system is used to precool the fresh air entering the compressor.

What is the difference between cogeneration and combined-cycle?

1) What is the difference between co-generation and combined-cycle power generation? Co-generations uses waste heat for many different processes, such as space heating or drying. Combined-cycle power generation is a two-cycle electricity generation process that uses the heat from the first cycle to run a second cycle.

How can you increase the efficiency of a combined cycle power plant?

Efficiency of combined cycle power plant may be improved by reducing internal irreversibility of processes in the thermodynamic cycle of the power plant. It is necessary to transfer between working substances of gas and steam cycles considerable part of the heat, supplied in the gas cycle.

What are the advantages of combined cycle power plant?

What are the advantages of a combined cycle? Flexibility. Combined-cycle plants can adapt to electricity demand or production needs. This type of plants can operate at full capacity with high demand and can bring its operation capacity down to a 45% partial load.

What is duct firing in combined-cycle?

Supplementary (Duct) firing may be used in combined cycles in the HRSG – raising the exhaust temperatures from about 1112F (600 °C) at GT exhaust to about 1472F (800°C) or even 1832F (1000 °C). Using supplementary firing will however not raise the combined cycle efficiency for most combined cycles.

Is combined cycle renewable?

Flexible combined cycle power plants support renewables by being more efficient, cleaner for the environment, and flexible to meet the change in demand. Higher efficiency results in a lower cost of generation.

What is the first edition of gas turbine combined cycle?

Gas Turbine Combined Cycle Power Plants – 1st Edition – S. Can Gülen S. Can Gülen This book covers the design, analysis, and optimization of the cleanest, most efficient fossil fuel-fired electric power generation technology at present and in the foreseeable future.

What is the gas turbine combined cycle data center?

It is focused exclusively on actual power plant systems and actual field and/or rating data providing a comprehensive picture of the gas turbine combined cycle technology from performance and cost perspectives.

What is the efficiency of a gas turbine?

Modern turbine technologies have between 30 and 35% (LHV) efficiency [53]. To increase the net power efficiency of the process gas turbines are combined with a steam cycle. The exhaust gases from the turbine have the potential to produce power by a steam turbine.

What is the firing temperature of an IGCC gas turbine?

The current state-of-the-art gas turbines for use in the IGCC process are classified as either F-class or G-class, with firing temperatures that range between 1370 and 1430°C [12].