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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]
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. Because of this loss, this type of engine is termed open cycle. The gas generator cycle exhaust products pass over the turbine first. Then they are expelled overboard.
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 ...
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 100MW of electricity. [50] The site was made separate from the Didcot A station as part of the decommissioning process. [51]
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 ...
The combined cycle plant was commissioned in January 2000. [1] This natural gas fired plant comprises a Siemens V94.3A(2) gas turbine in single shaft configuration. The HRSG is unfired triple pressure with reheat. Steam cycle cooling is by a hybrid wet - dry cooling tower, using sea water makeup. At commissioning, the plant capacity was 385 MW.
A simple-cycle combustion turbine (SCCT) is a type of gas turbine typically used in the power generation, aviation , and oil and gas industries (for electricity generation and mechanical drives). The simple-cycle combustion turbine follows the Brayton Cycle and differs from a combined cycle operation in that it has only one power cycle (i.e. no ...
The original power station on the site was a 200 MW gas turbine power plant that opened in 1976 and closed in 2001. The current power station comprises a 377 MW combined cycle unit that opened in 1998 and two open cycle gas turbine units for peaking power that opened in 2011. The station is now owned and operated by Contact Energy.