what are the differences between gas and steam engine?
|
Gas turbine  |
Steam turbine  |
|
Empowered by: The gas turbine
gets energy from the hot compressed air. |
Empowered by: The steam turbine
gets energy from expanding steam. |
|
Main components: Compressor,
combustion chamber, turbine are the main components of a gas turbine. |
Main components: The boiler (
for producing steam) and boiler, condenser, pump are the main components of a
steam turbine. |
|
Starting: Starting is easy
and quick. |
Starting: Starting is not easy as it takes a long time
to initiate |
|
Compactness: More compact
then the steam turbine as there is no boiler. |
Compactness: Considered as
less compact due to boiler and AC. |
|
Installation
and running cost: Installation and running cost is less as
compared to the steam turbine. |
Installation
cost: Installation cost
is greater because of the boiler. |
|
Working medium: Working medium
of the gas turbine in a gaseous state. It is also
known as the gas power cycle. |
Working medium: The working medium
exists in two phases. Vapour phase from the boiler to the condenser and
liquid from the condenser to the boiler. It is known
as the vapor power cycle. |
|
Internal temperature: The internal temperature reaches 1,500 degrees Celcius. |
Internal temperature: The internal temperature reaches 500 to 650. |
|
Water supply: A gas turbine does not depend upon the water supply. |
Water supply: A steam turbine depends upon the supply of water. |
|
Execution: The gas
turbine engine executes the whole Brayton cycle. |
Execution: The steam turbine is only a component executing one step of the Rankine cycle. |
|
Efficiency: The efficiency of the gas turbine is less. |
Efficiency: The efficiency of the steam turbine is high. |
|
Mass-produced: The mass of gas turbines per KW produced is less. |
Mass-produced: The mass of the steam turbine per KW produced is more. |
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