Gas Turbine Generator Diagram

A comparison can be drawn between the gas turbine s operating principle and a car engine s.

Gas turbine generator diagram.

Atmospheric air is drawn into the compressor and compressed to high pressure. Scale jet engines are scaled down versions of this early full scale engine. A car operates with a piston engine reciprocating motion and typically handles much smaller volumes than a conventional gas turbine. In this engine air is sucked in from the right by the compressor.

Let s take a step by step look out how a generator works using the diagram above. See figures 5 and 6. In a single shaft turbine the expansion is from 3 to 7 while in a two shaft engine the gas is expanded from 3 to 5 in the gas generator turbine and afterwards from 5 to 7 in the power. It is electrical energy that moves along power lines to homes and businesses.

The high temperature and pressure gas enters the turbine where it expands to ambient pressure and produces work. Open gas turbine cycle. The compressor which draws air into the engine pressurizes it and feeds it to the combustion chamber at speeds of hundreds of miles per hour. 1 point 1 from the figure above is a spinning rotor that is attached to the turbine shaft.

Hence an alternative arrangement is required to run the compressor before the system is being started. The basic gas turbine cycle is illustrated pv and t s diagrams in figure 5. The air is compressed in the engine compressor from state 1 to state 2. The high pressure air enters the combustion chamber where the fuel is burned at constant pressure.

A gas turbine is a combustion engine that can convert natural gas or other liquid fuels to mechanical energy. Open cycle gas turbine diagram. The combustion gas turbines being installed in many of today s natural gas fueled power plants are complex machines but they basically involve three main sections. With this in mind the pioneer of modern micro jets kurt schreckling produced one of the world s first.

The compressed air is supplied to the combustion chamber where heat added to the air by burning the fuel and raises its temperature. Allowing the gas generator and power turbine rotor to spin at their own speeds allows more flexibility in their design. The hot gas is then expanded. The ge 7f 05 gas turbine generates 225 mw equivalent to 644 000 horsepower or the power of 644 formula one cars.

The shaft has to rotate to produce required compressed air for starting purpose. Turbine extracts the energy from the high pressure high velocity gas flowing from the combustion chamber the following figure shows the general layout of an axial flow gas turbine the sort of engine you would find driving the rotor of a helicopter for example. In gas turbine power plant the compressor alternator and turbine are attached to the same shaft. The heat added in the combustor brings the cycle from 2 to 3.

Fresh air enters the compressor at ambient temperature where its pressure and temperature are increased. Also known as miniature gas turbines or micro jets. For starting the system the compressor has to deliver pre compressed air at starting. This is done by a.

The main job of the rotor is to absorb the mechanical energy outside the generator and use it to create rotational motion. A schematic diagram of a gas turbine power plant is shown in the figure.