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A heat recovery steam generator (HRSG) is an energy recovery heat exchanger that recovers heat from a hot gas stream, such as a combustion turbine or other waste gas stream. It produces steam that can be used in a process (cogeneration) or used to drive a steam turbine (combined cycle).
In the 1990s the market for heat-recovery steam generators for combined cycle gas turbines started. The company reached its peak for orders (c. 18,000 MW of plant) in 2001. [2] Nooter/Eriksen is a subsidiary of employee-owned holding company CIC, which has investments in several different industrial and manufacturing businesses. [3] [4]
A typical single-shaft system has one gas turbine, one steam turbine, one generator and one heat recovery steam generator (HRSG). The gas turbine and steam turbine are both coupled in tandem to a single electrical generator on a single shaft. This arrangement is simpler to operate, smaller, with a lower startup cost.
A new type of heat-recovery steam generator based on the Benson boiler has operated successfully at the Cottam combined-cycle power plant in central England. The vertical tubing in the combustion chamber walls of coal-fired steam generators combines the operating advantages of the Benson system with the design advantages of the drum-type boiler.
A regenerative thermal oxidizer (RTO) is an example of a waste heat recovery unit that utilizes a regenerative process.. A waste heat recovery unit (WHRU) is an energy recovery heat exchanger that transfers heat from process outputs at high temperature to another part of the process for some purpose, usually increased efficiency.
A heat recovery steam generator (HRSG) is a steam boiler that uses hot exhaust gases from the gas turbines or reciprocating engines in a CHP plant to heat up water and generate steam. The steam, in turn, drives a steam turbine or is used in industrial processes that require heat.
The facility comprises two General Electric (GE) 07FA.05 combined cycle combustion turbine generators (CTGs), two heat recovery steam generators (HRSG) each equipped with duct burners, one steam turbine generator (STG), one 12-cell wet mechanical draft cooling tower, and ancillary equipment.
The total thermal input is 1329 MW. Each gas turbine is connected to a heat recovery steam generator which connect to one steam turbine which has an output of 260 MWe. Steam is condensed using water from the River Trent. There is a 25 MWe 11 kV gas turbine available for black starts when there is no power to start producing electricity.
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