What are the Types of Gas Turbine Power Plants
Heavy Frame EnginesThese have a low pressure ratio which is usually below 20, and are quite large. By pressure ratio we mean the inlet pressure and the ratio of the pressure generated by the compressor discharge.
Aeroderivative EnginesAs the name implies, these are derived from jet engines and work at quite high compression ratios which can go up to 30. The engines are quite small and compact which makes them ideal for smaller power outputs in smaller plants. Turbines that have larger frames produce more emissions but they need to be designed to reduce the pollutants that are emitted, such as NOx.
Application of Gas TurbinesGas turbines are typically used for generating electricity on a large scale. They can be designed to generate up to 600 MV or 400 MW if they are combined with a steam turbine that generates 200 MW.
Gas turbines are typically used for generating electricity on a large scale. They can be designed to generate up to 600 MV or 400 MW if they are combined with a steam turbine that generates 200 MW. Click To TweetRather than being used to generate base load electricity, these setups are typically used to provide electricity to remote areas, such as oil and gas fields. On the other hand, they are also quite useful in main electricity grids for emergency power supply. Gas turbines that are not as powerful or generate just 5 MW are often used in transportation containers and as mobile electricity supplies that can be delivered via trucks. Gas power plants that generate electricity take 10 to 20 minutes at most to start up which makes them the ideal choice as backup plants for utility companies. Since they are smaller in scale compared to coal and nuclear plants, they can be erected fast and at a lower cost. Since these don’t need as much water when compared to steam power plants, they can be converted easily into combined cycle power plants which may prove to be more efficient. In addition, gas turbine power plants are more flexible when it comes to fuel economy. They can be altered to accommodate almost any type of natural gas or light petroleum products, such as paraffin and gasoline. Besides natural gas, heavy oils can also be used to fuel these turbines if their viscosity is reduced to less dangerous levels. This can be done in the turbine combustion chambers.