What are the major applications of gas turbine engines?
By far the most important use of gas turbines is in aviation, where they provide the motive power for jet propulsion. Because of the significance of this application and the diversity of modern jet engines, the subject will be dealt with at length in a separate section of the article.
How do gas turbine engines work?
The gas turbine compresses air and mixes it with fuel that is then burned at extremely high temperatures, creating a hot gas. 2. Hot gas spins turbine blades: The hot air-and-fuel mixture moves through blades in the turbine, causing them to spin quickly.
Are gas turbines used in cars?
The vast majority of cars on our roads are powered by piston-engined internal combustion engines. A gas turbine, however, has no pistons. Instead, air is compressed and fed into a combustion chamber, into which fuel is sprayed. The fuel/air mixture is then ignited and the gases produced are used to power a turbine.
Why are gas turbines not used in cars?
Gas turbines are most efficient when the turbine operates at high speed. Cars, on the other hand, operate at relatively low speed, even on the highway.
What fuel does a gas turbine use?
While gas turbines are often advertised as having fuel flexibility, about 90 percent of gas turbines worldwide operate on natural gas or liquefied natural gas (LNG) because of its purity and ease of combustion. Only about 400 GE gas turbines globally operate on crude, naphtha or heavy fuel oils.
How efficient is a gas turbine engine?
Latest generation gas turbine engines have achieved an efficiency of 46% in simple cycle and 61% when used in combined cycle.
How big is a gas turbine?
Gas turbines are available in sizes ranging from approxi- mately one to more than 300 megawatts (MW) and are used to meet diverse power needs, including propulsion (e.g., aircraft, ships, and trains), direct drive (e.g., pumps and com- pressors) and stationary electricity generation.
What is gas turbine engine and its function?
The gas turbine is an internal combustion engine that uses air as the working fluid. The engine extracts chemical energy from fuel and converts it to mechanical energy using the gaseous energy of the working fluid (air) to drive the engine and propeller, which, in turn, propel the airplane.