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Frequently Asked Question
What is Wind Energy?
Energy derived from wind velocity is known as wind energy.
- Air - the invisible gaseous substance surrounding the earth,
- Wind - air in motion called wind.
- The difference in temperature gradient encourages the circulation of air from one place to another place.
- The wind is a non-conventional type of energy.
- Wind energy is one of the major renewable energy sources. It plays an important role in generating electricity. Wind energy provides around 1% of the world's electricity.
- This technology helps in the reduction of the greenhouse effect.
- Nowadays this technology is the fastest-growing renewable technology. India stood at 6th position with an installed capacity of 47.7 TWh in 2017. China is the dominant country in wind energy production with a capacity of 305 TWh, followed by America (257 TWh ).
- In India, Tamil Nadu is the highest wind energy producer state with a capacity of 9231.77 MW.
- The Minimum wind speed of 10 mph is considered to be useful for seed production.
What are the Type of Wind Energy
Summary
There are two types of wind energy: onshore and offshore. Onshore wind
turbines are situated in areas with ample wind, like open steppes or
coastal regions, while offshore turbines harness the powerful and
consistent wind in the middle of the ocean, resulting in higher
productivity compared to onshore setups.
In Hindi
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Based on the establishment. There are two types of wind energy
Onshore Wind Energy
The windmill-like structure is called a Wind turbine which is responsible
for electricity generation. They are located in a place that has a
sufficient amount of air such as large steppes or coastal areas. A group of
high-power wind turbines is called wind farms.
Offshore Wind Energy
The principle of energy production is similar to onshore wind energy but the
difference is that the wind turbines are located in the middle of the Ocean
to take advantage of the powerful offshore wind.
In the middle of the Ocean, the wind is flowing very rapidly and
uninterrupted. Hence offshore wind is more productive than onshore
wind.
What is Wind Turbine?
Summary
A wind turbine converts wind energy into electricity using three main
components: the tower, blades, and nacelle. The tower supports the turbine
and elevates it to capture stronger winds. The blades, attached to a
rotor, rotate when wind blows, driving the mechanical components in the
nacelle. Inside the nacelle, a gearbox increases the rotational speed, and
a generator converts the mechanical energy into electrical power. The
efficiency of a wind turbine improves with the number of blades it
has.Wind energy can be harnessed through turbines, converting wind's
kinetic energy into electricity. It's used for water extraction and
renewable hydrogen production for eco-fuel. Advantages include being
renewable, eco-friendly, low cost, and no need for fuel or transport.
However, challenges include dilute and fluctuating wind, needing storage,
noise from turbines, and requiring large areas for installation, along
with regular maintenance.
In Hindi
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A wind turbine harnesses wind energy to produce electricity. Its key
components include the tower, blades, and nacelle. The tower supports the
turbine, while the blades capture wind energy, rotating and driving the
nacelle's mechanical components like the gearbox and generator, which
convert wind energy into electrical power.
A wind turbine is a device that converts the kinetic energy of wind into
mechanical energy, which is then used to generate electricity. Efficiency
of wind turbines correlated with the number of blades in wind turbines.
Efficiency increase as numbers of blades. It typically consists of three
main components: the tower, the blades, and the nacelle.
1. Tower: The tower is the tall structure that supports the wind turbine.
It elevates the turbine to capture stronger and more consistent winds at
higher altitudes.
2. Blades: The blades are attached to a rotor at the top of the tower and
are responsible for capturing the wind. As the wind blows, it causes the
blades to rotate.
3. Nacelle: The nacelle is the housing unit at the top of the tower where
the mechanical components of the wind turbine are located. This includes
the gearbox, generator, and control systems. The rotor shaft connects the
blades to the gearbox, which increases the rotational speed of the blades
and transfers the mechanical energy to the generator. The generator then
converts this mechanical energy into electrical energy, which can be
transmitted and used to power homes, businesses, and industries.
How many Types of Wind Turbine?
Summary
Two main types of wind turbines exist: vertical-axis and
horizontal-axis. Vertical-axis turbines have a simple design, with
their axis perpendicular to the wind, making them omnidirectional.
They are ground-level, making maintenance easier, but require external
starting mechanisms. Two types are Savonius and Darrieus.
Horizontal-axis turbines, common in commercial use, have their axis
parallel to the ground, providing high power output but with a more
complex and expensive design. They come in various blade
configurations, with three-blade models being most common. However,
they suffer from low cut-in speed and easy furling.
In Hindi
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Vertical axis wind turbines -
- It's simple in design.
- The Axis of rotation of vertical axis wind turbines is vertical to the ground and almost perpendicular to the wind direction. These turbines can receive wind from any direction.
- The generator of this type of turbine is located at ground level which makes its design simple and more economical. As well as maintenance can be done at ground level.
- The disadvantage is that these turbines are not self-starting. An additional machine is required to start the turbine, once it is stopped.
- It's 2 type
1. Savonius windmill
2. Darrieus windmill
Horizontal-axis wind turbines
- The horizontal axis wind turbines have their axis of rotation horizontal to the ground and almost parallel to the wind stream.
- The commercial wind turbines are under this category.
- In general, they show a high power coefficient.
- However, the generator and gearbox of wind turbines are placed over the tower which makes its design more complex and expensive.
- According to their blades, horizontal axis wind turbines are 4 types – Single blade, two-blade, three-blade, and multi-blade.
- Three-blade wind turbines are mostly used as commercial turbines.
- Horizontal Axis wind turbines have some distinct disadvantages such as low cut-in speed and easy furling.
What is the Working principle of Wind Turbine
The wind energy compels the blades around the rotor. The rotor is connected
to the main shaft, which spins a generator to create electricity. The wind
turbines convert the kinate energy of wind into mechanical uses.
What are the Application of Wind Energy ?
1. Through the wind turbines, the kinetic energy of wind can be converted
into mechanical energy, which is used to produce electricity.
2. Wind energy can be used to extract water from underground using wind
pumps
3. Wind energy produces continuous electricity which is used in the
production of renewable hydrogen. and this type of hydrogen is used in the
production of eco-fuel.
What are the Advantages of Wind Energy?
- It's renewable energy.
- Eco-friendly technology of production energy.
- No fuel and transportation are required.
- The cost of electricity under low Production is comparatively low.
What are the Disadvantage of Wind Energy?
- The available wind energy is dilute and fluctuating in nature.
- Storage capacity is required.
- Wind turbines cause Noise production.
- A large area is required for wind farms or windmills.
- Timely Maintenance is required.