A gas generator engine (GG) is a powerful bipropellant liquid rocket engine that uses high pressures to create thrust. It works by injecting fuel and oxidizer propellants into the turbine.
These engines are becoming more and more popular for generator power solutions. They are environmentally friendly and produce electricity at very low emissions.
Fuel
Fuel is the most important part of any generator, because it determines whether the engine will work. Gasoline, natural gas, propane and diesel are the most common types of fuel used in generators.
Natural gas is a natural form of energy that can be delivered directly to the generator by the local utility. This makes it easier to have a steady supply that doesn’t depend on power outages.
Propane is also a great choice for home backup generators because it can be stored for long periods of time. But you may run out of propane if you forget to refuel your generator in time.
Another advantage of propane is that it can be transported in pressurized containers, which means it’s more convenient than liquid fuel to store and transport.
NG is also a convenient option for emergency situations because it can be fed to your generator through underground pipes that are storm and wind proof. This will allow you to have a steady source of power when disaster strikes (see the point in the preview section).
Compressor
A compressor is an important part of any gas generator engine. Its role is to increase the pressure of air or gas by reducing its volume.
Several types of compressors exist, including centrifugal and axial flow. Both of these operate in a similar way.
The centrifugal compressor uses a rotor to force air into a chamber and then back out again. It can pressurize air quickly and efficiently.
Compressors are primarily used for power generation, but they can also be used in many other applications. These include air or gas filling, and even tyre inflation.
One of the most popular compressors is the reciprocating type. A piston inside the cylinder compresses air when the rotor spins. Some compressors use more than one piston, which can help reduce noise output and provide greater air pressure.
Combustion Chamber
The combustion chamber is part of any gas application, including spark-ignited engines and power generators. Light hydrocarbon gases such as natural gas or methane are commonly used in these applications.
The main goal of the combustion chamber is to produce a smooth and controlled flow of air. This ensures a stable flame that won’t lose energy due to unstable turbulence.
To accomplish this, the combustion chamber needs to be designed so that it is able to manage its temperature and pressure. This is a challenge, as it can be difficult to get the right temperature and pressure to produce a good combustion.
Fortunately, there is an engine cycle that does this very well. This is called the expander cycle, or more commonly, the gas generator cycle.
Turbine
Gas generator engines use a turbine to turn shaft power into electricity. They are commonly used in distributed generation (combined heat and power or CHP) systems, including electric utilities, hospitals, universities, district heating, seawater desalting, food processing, textiles, petrochemical refining, chemical processing, pharmaceuticals, pulp and paper, and general manufacturing.
The turbine is composed of stages that each have a row of blades or nozzles to direct expanding gases through the turbine. The expansion of the gases imparts rotation to the turbine shaft.
As with the compressor, the turbine must be designed to be efficient and withstand the high temperatures that result from combustion. The turbine is also subject to axial pressures, which are generated by the spinning blades.
Turbines are available in a wide range of sizes and shapes. They can be symmetrical, asymmetrical, or sector divided.
