Renewable energy is a globally popular source providing sustainable & endless energy that is produced from natural resources like Sun and Wind. Moreover, renewable energy comes from nature that reproduces itself more speedily than it is used up. These energy sources include hydroelectricity, geothermal energy, solar energy, and wind power, which are continuously supplied by the sun & wind is a type of renewable energy, whereas coal, oil, and gas are non-renewable fossil fuels that take hundreds of millions of years to form. When fossil fuels are used to create energy, they emit deadly greenhouse gases like carbon dioxide. The burning of fossil fuels results in more emissions than generating power from renewable sources. Fossil fuels, which produce nearly the majority of emissions, must be replaced with renewable energy if the climate crisis is to be handled.
The main categories of renewable energy include:·
Solar (Review a separate Blog)
·
Wind
·
Geothermal
·
Hydropower
· Biomass
· Ocean Energy
SOLAR ENERGY
It is the most abundant and cheap
source of Renew Energy which can even be used under poor lighting conditions. When
the heat and light of the sun interact, solar energy is released. Solar power
is generated when solar energy is converted into electricity or used to heat
water, air, or other things. . A separate blog has already been created for information. You may review it. Here we discuss the more renewable sources of energy for your information.
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| Renewable Energy in daily life |
WIND ENERGY
Wind
energy is the process of capturing the kinetic energy of air movement using huge
wind turbines installed on land (onshore), in salt water, or in freshwater
(offshore). Even though wind power has been used for thousands of
years, onshore and offshore wind energy technology has recently advanced to
maximize the amount of electricity created by using taller turbines and larger
rotor diameters. Even though average national wind speeds vary
widely, most places in the world have a significant amount of wind energy
deployment potential. In fact, the technical potential for wind energy exceeds
the total amount of power produced globally.
The process of using air movement to produce mechanical or electrical power is known as wind energy or wind power is used as alternate energy. The several types of wind energy
Wind turbines produce electricity.
Wind turbines are often found on hilltops or near the ocean. In a few
countries, wind turbines have also been built on the ocean, either by floating
on the water's surface or by using massive pylons that extend to the ocean
floor. Wind turbines may come in a variety of forms, but the windmill is the
most popular. Although there are many places on Earth with strong winds,
wind energy is frequently produced in remote locations. There is a lot of
potential in offshore wind energy.
How wind energy is produced
Thermal
air currents are caused by the sun's uneven heating of the planet. These air
pockets travel about as the earth's global wind to establish
temperature equality. Electricity may be produced by capturing and converting
wind energy. Wind energy or wind power is the technique of utilizing air
movement to generate mechanical or electrical power. The various forms of wind
energy
Our energy issues can be resolved cleanly and sustainably using wind energy. It may be used to generate power instead of fossil fuels without producing any greenhouse emissions in the process. The wind is renewable and un-renewable, thus it will always be available.
GEOTHERMAL ENERGY
Renewable electricity generated from the Earth's core is known as geothermal energy. It originates from heat produced during the planet's initial creation and the radioactive decay of elements. This thermal energy exists in the rocks and liquids of the earth's core. Thermal energy is continuously transferred from the planet's core to its surface due to the difference in temperature between the earth's core and the earth's surface. Some of the rock in the Earth's core melts at temperatures above 4000 °C to generate hot, molten rocks known as magma. Moreover, the mantle exhibits plastic behaviour as a result of these temperatures, with certain regions, especially on a large scale, upward.
The rock and water in the crust of the Earth may get as hot as 370°C. From surface-level levels all the way down to many miles below, thermal energy is present in the rocks & fluids. Geothermal energy makes use of the thermal energy that is available from the Earth's interior. Geothermal reservoirs can be heated via wells or other methods. Hydrothermal reservoirs are those that are naturally sufficiently hot and permeable, whereas enhanced geothermal systems are those that are naturally sufficiently hot but improved by hydraulic stimulation. Various thermal fluids can be utilized to produce electricity once they reach the surface. Since it has been in use for more than a century, the technology for producing energy from hydrothermal reservoirs is well-established, renew reliable, and developed energy.
HYDROPOWER
How is power generated from water?
How does PHES work?
The water is then returned to the lower reservoir by a hydroelectric turbine to release the stored energy. To assist with lessening surges, prevent blackouts, or meet surges in energy demand, hydroelectricity may be produced nearly instantly and at any time. This allows the power to be delivered into the system when it is needed. Additionally, PHES can generate a lot of power for a long time.
OCEAN ENERGY
How does it function?
By converting the
stored energy in ocean waves (swells) into electricity, the wave is generated.
Several different wave energy technologies are being developed and tested to
convert wave energy into electricity. There are two ways that tidal energy may
be used, both of which produce electricity:
The difference in
temperature between the ocean's surface and deeper water is turned into energy
to generate ocean thermal energy.
BIOENERGY
·
Solid
municipal waste
·
Biogas
and landfill gas
·
Biofuels and
Other
manures for heat and power generation, and agricultural crops for liquid
biofuels. The majority of biomass is used for cooking, lighting, and heating
systems in rural areas, mostly by underprivileged populations in developing
nations. Modern biomass systems include specific crops or trees,
agricultural and forestry wastes, and a variety of organic waste sources.
Burning
biomass creates greenhouse gas emissions, although at a lower level than
burning fossil fuels such as coal, oil, or gas. However, given the possible
negative environmental impacts of large-scale increases in forest and bioenergy
plantations, as well as the resulting degradation and land-use change,
bioenergy should be used only in limited applications.
What is the difference between bioenergy and waste energy?
Bioenergy is a type of renewable energy that is produced by
converting biomass into heat, electricity, biogas, and liquid fuels. Biomass is
renewable organic matter obtained from forestry, agriculture, or waste sources.
It may also contain flammable municipal solid waste components.
How is biomass created?
Depending on the type of feedstock (raw material), the
scale/size of the project, and the type of energy to be generated, biomass can
be converted to bioenergy utilizing a variety of methods. Conversion methods
include combustion, pyrolysis, gasification, transesterification, anaerobic
digestion, and fermentation, as well as processes like biorefining.
Some
conversion techniques also generate byproducts that can be utilized to create
valuable materials like renewable bitumen and even biomass-based concrete.
Other advantages include reduced emissions, trash disposal, assistance for
rural economies, and improved air quality.
CONCLUSION:
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