English presentation about gas turbine

1. Profesor
Cesar Rivas Coa Alexander 24.806.715
Bompart Royer 26.189.458
Vasquez N.
Perez Kar
25.619.812
25.748.288
Integrantes:
República Bolivariana de Venezuela
Ministerio del Poder Popular para la Educación Universitaria
Ciencia y Tecnología
Universidad Nacional Experimental Marítima del Caribe
Vicerrectorado Académico
ING-663

2. INTRODUCTION
The gas turbine is a power plant,
which produces a great amount of
energy for its size and weight. Its
compactness, low weight, and multiple
fuel application make it a natural
power plant for offshore platforms.
Today there are gas turbines, which
run on natural gas,diesel fuel,
naphtha, methane, crude, low-Btu
gases, vaporized fuel oils, and
biomass gases.

3. What is a gas turbine?
Gas turbine
A gas turbine is a rotary internal
combustion engine whose working
fluid is a gas, where mechanical
energy is produced from the energy
provided by a fuel and a large amount
of heat is generated in the form of hot
gases.

4. What are its main elements?
The main elements of the gas turbine are the air intake, the compressor, the
combustion chamber, the expansion turbine and the rotor.

5. The air intake
The air intake system consists of all the elements necessary
for the air to enter the turbine under the most suitable
conditions of pressure, temperature and cleanliness. For
this it has filters of various types, which are responsible for
removing dirt that can drag the air; and of a series of
systems that condition the temperature to facilitate that as
much air mass enters the turbine as possible.

6. The compressor
The function of the compressor is to raise the pressure of
the combustion air (once filtered) before it enters the
combustion chamber. The control of the air inlet for
combustion is carried out by varying the angle of inclination
of the initial wheels of the compressor blades. The higher
the angle, the greater the amount of air entering the
compressor, and therefore the turbine.

7. The combustion
chamber
In it takes place the combustion at constant pressure
of the gas, fuel together with the air.
The expansion
turbine
In the turbine is where the conversion of the energy
contained in the combustion gases takes place, in the form
of high temperature and pressure (enthalpy), to
mechanical power (in the form of rotation of an axis).

8. How does a gas turbine work? The thermal cycle that this machine
represents is the Brayton cycle. In this
way, the machine follows an open
cycle, since the fluid that passes
through it is continuously renewed.
Indeed, fresh air from the atmosphere
flows through a compressor that
raises it to a high pressure. Then
energy is added by dispersing fuel in it
and burning it so that combustion
generates a high temperature flow.
This gas of high temperature and
pressure enters a turbine, where it
expands decreasing the outlet
pressure, producing the movement of
the shaft during the process.

9. Characteristics
- Very light
- Easy to remove for maintenance
- Suitable for complete automation
- Small weight
- Easy to start
- Reliable
Aplication
They are used for multiple
applications such as in the
generation of electricity or in the
propulsion of ships and aircraft in
fact they are used in warships or
naval vessels and container ships.
Gas turbine

10. ADVANTAGES AND DISADVANTAGES
The gas turbine is the best suited prime mover when the
needs at hand suchas capital cost, time from planning to
completion, maintenance costs, and fuelcosts are considered.
The gas turbine has the lowest maintenance and capitalcost
of any major prime mover. It also has the fastest completion
time to full operation of any plant. Its disadvantage was its
high heat rate but this has been addressed and the new
turbines are among the most efficient types of prime movers.

11. Gracias por su
atención