The wind power plant is used to convert kinetic energy into electrical energy. Modern wind generators are able to use up to 45% of the air energy and this allows you to successfully use the wind power as an alternative energy source, which helps to reduce the cost of utilities or completely replace the connection to the General power grid.
What kind of wind generator is needed for a private house?
The market of wind turbines can offer models from manufacturers from different countries, including the USA, Europe, and the CIS. Installations from domestic manufacturers are cheaper, but the choice should be based on the specifications and warranty periods. The average service life of wind turbines with proper use – 20-25 years. If you are offered to buy a windmill that will last less than 10 years, it is better to find other options.
The work of the windmill is usually tested at a dacha or a small country house, where the need for electricity arises periodically, and not on a permanent basis. To supply a small cottage you will need wind turbines with a capacity of 1.5 to 3 kW. Monthly power generation, in this case, ranges from 500 to 600 kW. For an average house (100-200 m2) with the condition of permanent residence requires a windmill with a capacity of at least 5-6 kW and a monthly power generation of 1000 kW.
Having understood the theory of what power the wind turbine needs for the house, it is necessary to take into account the practical aspect of the strength of the wind. Buying a wind turbine with low power, you can squeeze out of it a sufficient amount of energy only in a hurricane.
For example, a two-kilowatt windmill with an estimated wind speed of 15 m/s will give you 15-20% of the energy provided the wind speed is 6-8 m/s, and in full calm will remain stationary. This is not a reason to abandon low-cost low-power wind turbines just buy a wind turbine with lower estimated wind speed.
The same two-kilowatt wind power plant, but with an estimated speed of 8 m/s, will operate stably at a maximum, and in especially windy days will give all 40% of the energy.