Many owners of suburban areas are trying to organize an autonomous power supply system so as not to depend on suppliers and force majeure. And to this day, power lines have not been connected to some houses. To solve such problems, you can use gas generators to generate electricity on natural gas - liquefied or main.
Content
- Principle of operation
- Reciprocating gas generators
- Turbine generators
- Review of popular models
Principle of operation
Electrical energy is generated by converting the energy of the air flow, which is obtained after the combustion of the combustible mixture. The generators can run on wood, gasoline, diesel or gas. The household gas generator mechanism includes:
- Turbine.
- Compressor. Used for air injection and compression.
- The combustion chamber.
Air enters the compressor. It is compressed and forced into the combustion chamber. At the same time, air mixes with fuel., the resulting mixture ignites. The heated gas is supplied to the turbine. The streams begin to spin up the built-in blades. The work of the turbine is to expand the heated mixture.
About 60% of the generated electricity is spent on running the compressor. In one working circle, two isobaric processes occur simultaneously. One is in the combustion chamber, and the other is in the exhaust pipe.
Reciprocating gas generators
Reciprocating types of gas-fired generators for electricity are the cheapest. They are very similar to gasoline units. Some models also run on gas, and gasoline. A carburetor with a gas tank is additionally built into them. Thanks to this, you can switch to any of the available fuels to generate electricity.
The piston gas generator for electricity consists of a reducer. The power is set by the manufacturer. It is equipped with an automatic blocking of the outlet. This prevents gas leakage if the engine stops.
The main advantage of gas piston generators is that they can be used with different types of fuel. You can take both liquefied gas from cylinders and ordinary gas, which is supplied through the central gas pipeline.
There are also disadvantages of using propane in the cold season. This gas evaporates very poorly at low temperatures., therefore, the gearbox must be constantly warmed up.
Gasoline generators are air cooled. Gas - water. Therefore, there will be enough hot water to heat the gearbox in winter.
Turbine generators
A turbine is a type of engine for gas power generators. These are the settings that consumers often choose. Such generators have three main elements:
-
Compressor. In turbine installations, the compressor has a plurality of blades. Serves to build up pressure and transfer to the combustion chamber. - The combustion chamber. This is a hollow compartment. It contains a spark plug and a gas injector. A candle is only required to start the installation (burning occurs continuously). A thermocouple is also installed in the combustion chamber. It regulates the ignition process during start-up.
- Turbine. The pressure of the mixture of air and gas increases several times in the combustion chamber. This mixture is fed to the turbine. The shoulder blades begin to rotate. This is how electricity is generated.
The main advantage over piston gas generators is the increased power of the device and a long service life. There is continuous torque in a turbine, but in a piston generator it only takes 25% of the total working time. But such equipment is made from expensive elements, which is reflected in the final cost.
Review of popular models
The first model is SDMO PERFORM. Manufacturer SDMO is a very well-known French brand that produces both gasoline and gas powered generators. Their products are intended for domestic and industrial use. The company has a comprehensive approach to working on new models. This provides good performance indicators for the devices and their durability.
SDMO PERFORM is small and lightweight. It uses liquefied or natural gas as fuel. Power according to the passport - 2.4 kW. Launched manually. Has two sockets for supplying 220 V. Air cooling is provided. The consumption is 1.2 liters per hour. The price of the device is about 60,000 rubles.
Model GG7200-A from Russian Engineering Group. This is a fairly well-known manufacturer in the post-Soviet space. The GG 7200-A has an average performance. It is quite enough for a small house or summer cottage. Has a good safety record. If any element fails, the automatic valves will stop supplying fuel to the combustion chamber.
This model is larger and heavier than the previous one. Has two 220 V and one 12V sockets. The power of the gas generator is 5.5 kW, but 6 kW can also be obtained. Starting can be done manually or automatically. Gas consumption - 1.7 l / h. Air cooled.
