Most gas turbines are internal combustion engines but it is also possible to manufacture an external combustion gas turbine which is, effectively, a turbine version of a hot air engine. … When external combustion is used, it is possible to use exhaust air from the turbine as the primary combustion air.
Is gas turbine an internal combustion engine?
Gas turbines are a type of internal combustion (IC) engine in which burning of an air-fuel mixture produces hot gases that spin a turbine to produce power. … Combustion occurs continuously in gas turbines, as opposed to reciprocating IC engines, in which combustion occurs intermittently.
Do external combustion engines use turbines?
For example, an external combustion engine would use a flame to heat water into steam, then using the steam to turn a turbine. This is different from internal combustion, like in a car engine, where the gasoline ignites inside a piston, does work, and then is expelled.
Is steam turbine an external combustion engine?
There are two types of combustion engines: external and internal. A steam engine is an external combustion engine.
Is there an external combustion engine?
An external combustion engine (EC engine) is a heat engine where a working fluid, contained internally, is heated by combustion in an external source, through the engine wall or a heat exchanger. The fluid then, by expanding and acting on the mechanism of the engine, produces motion and usable work.
What are four types of turbines?
While turbines can be classed as either impulse or reaction according to the way they function, there are four broad types of turbines categorized according to the fluid that supplies the driving force: steam, gas, water, or wind.
What are the 3 main component of gas turbine?
Gas turbine overview. The gas turbine has three major sections, namely the compressor, combustor and turbine (although, from a materials perspective, the other major component groups – rotor, casing and auxiliaries – are also of interest).
Is steam turbine an IC engine?
A steam engine is a heat engine that performs mechanical work using steam as its working fluid. The steam engine uses the force produced by steam pressure to push a piston back and forth inside a cylinder. … Steam engines are external combustion engines, where the working fluid is separated from the combustion products.
How many types of external combustion engines are there?
External Combustion Engines Types
A steam engine is one type of external combustion engine. In a steam engine, a fuel such as coal is burned in the combustion chamber. This heat turns water in a boiler to steam.
What is meant by external combustion?
adjective. noting or pertaining to an engine, as a steam engine, in which fuel ignition takes place outside the cylinder, turbine, or the like, in which heat energy is transformed into mechanical force.
What are the main parts of external combustion engines?
An external combustion engine is a heat engine where an (internal) working fluid is compressed and heated by combustion of an external fuel through the engine wall or a heat exchanger. The fluid then, by expanding and acting on the mechanism of the engine (piston or turbine), produces a shaft power.
What is internal and external combustion?
1.2 Internal combustion engine (IC)
Engines are classified into two types, viz., IC engine, and external combustion (EC) engine. In IC engines, the combustion of fuel takes place inside, whereas in EC engines the fuel combustion takes place outside the cylinder.
What are the disadvantages of external combustion engine?
Disadvantages of external combustion engines
- Not suitable for low load requirements.
- Leakage of working fluid.
- Lubricant consumption.
- Size of engine is relatively big.
- Overall working temperature is high so great care and special building materials are required.
How does a combustion engine work?
The engine consists of a fixed cylinder and a moving piston. The expanding combustion gases push the piston, which in turn rotates the crankshaft. … After the piston compresses the fuel-air mixture, the spark ignites it, causing combustion. The expansion of the combustion gases pushes the piston during the power stroke.