gaasiturbiinit

Gaasiturbiinit, also known as gas turbines, are internal combustion engines that operate on the Brayton cycle. They consist of three main components: a compressor, a combustor, and a turbine. The compressor draws in ambient air and compresses it to a high pressure. This compressed air then enters the combustor, where fuel is injected and ignited, creating a high-temperature gas. This hot gas expands through the turbine, causing it to spin and produce mechanical power. The rotational energy of the turbine can be used to drive a generator, producing electricity, or to power machinery such as pumps and compressors, or to propel aircraft and ships.

Gas turbines are known for their high power-to-weight ratio, rapid startup capabilities, and relatively clean emissions compared to some other prime movers. They are commonly used in power generation, particularly for peaking power plants that can be brought online quickly to meet demand fluctuations. In aviation, they form the basis of jet engines and turboprop engines. Industrial applications include mechanical drives for oil and gas pipelines and marine propulsion.

The efficiency of gas turbines can be improved by various methods, such as combined cycle power generation, where the hot exhaust gases from the gas turbine are used to produce steam for a steam turbine, thereby increasing overall efficiency. Ongoing research and development focus on increasing efficiency, reducing emissions further, and extending the operational lifespan of these versatile machines.