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In a simple cycle gas-turbine, also known as open-cycle gas-turbine (OCGT) generators, hot gas drives a gas turbine to generate electricity. This type of plant is relatively cheap to build and can start very quickly, but due to its lower efficiency is at most only run for a few hours a day as a peaking power plant. [8]
The gas-generator cycle, also called open cycle, is one of the most commonly used power cycles in bipropellant liquid rocket engines. Propellant is burned in a gas generator (or "preburner") and the resulting hot gas is used to power the propellant pumps before being exhausted overboard and lost.
The basic operation of the gas turbine is a Brayton cycle with air as the working fluid: atmospheric air flows through the compressor that brings it to higher pressure; energy is then added by spraying fuel into the air and igniting it so that the combustion generates a high-temperature flow; this high-temperature pressurized gas enters a ...
The LMS100 PA produces approximately 100 MW at an efficiency of around 46% LHV in open cycle operation. It is currently the largest and most efficient aero-derivative gas turbine. It is able to produce full rated power in under 10 minutes. [citation needed] The LMS100 comprises a low-pressure compressor, an intercooler, a supercore and a power ...
English: Diagram of a typical gas turbine jet engine (in English). Air is compressed by the fan blades as it enters the engine, and it is mixed and burned with fuel in the combustion section. The hot exhaust gases provide forward thrust and turn the turbines which drive the compressor fan blades.
Didcot OCGT is an Open Cycle Gas Turbine that was originally part of Didcot A. Built in 1968, it uses four open-cycle gas turbines, which are each powered by a pair of Rolls-Royce Avon engines to generate 100 MW of electricity. [50] The site was made separate from the Didcot A station as part of the decommissioning process. [51]
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Fuels such as natural gas or oil can also be burnt directly in gas turbines (internal combustion), skipping the steam generation step. These plants can be of the open cycle or the more efficient combined cycle type. The majority of the world's thermal power stations are driven by steam turbines, gas turbines, or a combination of the two.