Wind microgeneration – energy saving resource for the coastal zone of the city

The article presents material on the forecast for the development of world energy until 2040, notes the prospects for an increase in the share of electricity in final energy consumption, the transport sector, being the main polluter of the city’s environment, remains the main consumer of motor fuel in the future with the transition to biofuel and gas motor fuel, to electric and hybrid drive of the vehicle; shows the activation of energy production in Russia from renewable energy sources, explains the growth rate of renewable energy production in the world and in Russia, which is due to significant government support for the development of renewable energy sources; further action plans to reduce greenhouse emissions are shown, according to which the improvement of gas and oil production technologies will be developed, and support for the development of renewable energy sources; the possible use of wind turbines for distributed wind energy consumers; the difficulty of operating wind turbines in urban conditions due to the limited free spaces for placement; the availability of free wind flows of the coastal zone, the advantages of wind microgeneration as an energy saving resource are shown. The prospects and design developments of currently operating wind turbines, differing in the location of the axis of rotation (horizontal or vertical), their advantages and environmental disadvantages of horizontal-axial wind turbines, which include the need to use devices to increase the shaft rotation speed – multipliers with a large gear ratio (increase rotation speed in the «wind wheel shaft – generator shaft» system. A new principle of wind microgeneration for low-speed wind flows is proposed, a design diagram of a generating device for a wind engine with a low axial rotation speed is presented, and the principle of conversion is described. The design features of the presented generating device are considered for its possible use as a source of renewable energy in confined spaces in the urban environment and operating conditions in the coastal zone of the city.

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