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GREEN ENERGY: The NEED of the WORLD

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Energy is the property of objects which can be converted into different forms or can be transferred to other objects but cannot be created or destroyed. Green energy is the energy that is produced in such a way as to minimize its negative impact on the environment. It is a renewable source of energy. Sources of green energy such as solar,wind, geothermal and hydro energy are developed and promoted as alternative source that make little or no contribution to climate change. In this paper the author seeks to explore how green energy is useful for the future aspect of the world. And current application of this emerging technology, like generating electricity for various purposes, heating and cooling of water and more.
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Journal of Management Engineering and Information Technology (JMEIT)
Volume -2, Issue- 5, Oct. 2015, ISSN:
2394 - 8124
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GREEN ENERGY: The NEED of the
WORLD
Vijay Laxmi Kalyani, Manisha Kumari Dudy, Shikha Pareek
Vijay Laxmi Kalyani, Vijay Laxmi Kalyani, Govt. Mahila Engineering College, Ajmer, India
vijaylaxmikalyani@yahoo.com
Manisha Kumari Dudy, Manisha Kumari Dudy, Government Women Engineering College, Ajmer, India
manidudy21@gmail.com
Shikha Pareek, Shikha Pareek, Government Women Engineering College, Ajmer, India
shikhapareek95@gmail.com
Abstract: Energy is the property of objects which can be
converted into different forms or can be transferred to
other objects but cannot be created or destroyed. Green
energy is the energy that is produced in such a way as to
minimize its negative impact on the environment. It is a
renewable source of energy. Sources of green energy such
as solar,wind, geothermal and hydro energy are
developed and promoted as alternative source that make
little or no contribution to climate change. In this paper
the author seeks to explore how green energy is useful for
the future aspect of the world. And current application of
this emerging technology, like generating electricity for
various purposes, heating and cooling of water and more.
Keywords: Green Energy, different types of sources,
advantages, applications
I. INTRODUCTION
The idea of green energy is introduced in November 2006 as
renewable energy standard offer program. That offer was in
short called as SOP or RESOP. It introduced a 20 year feed
in tariffs for hydro, wind, solar (PV) and biomass projects.
The Ontario Green Energy Act (GEA), officially the Green
Energy and Green Economy Act 2009 was introduced in the
Ontario Legislature on February 23, 2009, to expand
renewable energy production and encourage energy
conservation[1]. The word ‘Green’ make our mind to think
about a world without pollution and eco friendly. So the
green energy reflects the idea about generation of energy
from natural resources like sunlight, wind, rain, tides, plant,
algae, geothermal heat, etc. having no or less impact on the
environment and can be renewed. These energy resources are
renewable, meaning they're naturally replenished.
There are two types of sources of energy in the world:
renewable energy sources and non-renewable energy
sources.
Renewable energy sources are generated directly from nature
for example, from the sun, rain, wind, tides, and it is possible
to generate it over and over whenever it is needed. Renewable
energy sources are abundant and are definitely the cleanest
energy sources in Earth. Many types of Renewable energy
sources are solar energy, biomass energy, wind energy, tidal
energy, hydro energy, and geothermal energy. For instance,
it is possible to use the energy from the sun and that is
converted into electricity. Geothermal, wind, tides, and
biomass energy from plants can also be used in different
forms like Wind is harnessed from Earth's natural weather
patterns. Hydropower comes from flowing rivers and from
reservoirs. Solar energy comes from the Sun's light and
radiation. Geothermal energy comes from the heat produced
by the Earth underneath the ground. The advantages of
Renewable energy is that wind, sun, ocean, and geothermal
energy is in abundance and completely free of charge. The
renewable energy sources have very low or zero carbon
emissions, so they are environmental friendly. The another
advantage is, it is not necessary to rely on any country to
supply renewable energy sources, unlike its non-renewable
counterparts.
Non-renewable sources are not environmental friendly and
can have serious affect on our health. Most energy that is used
in the world today is generated from non-renewable energy
sources. These energy sources can be re-generated over a
short period of time. Natural gas and oil are derived from
ancient plant or animal remains or fossils. These remains are
what we have been left with after millions of years of
fluctuation in pressure and temperature. Non-renewable
energy sources include oil, coal, natural gas, and nuclear
energy. The advantage of non-renewable energy sources are
it is ready, cheap, and easy to use. The non-renewable energy
convert one non-renewable energy type to another. The major
disadvantage of non-renewable energy sources is that they
are finite and will expire sometime in the future. This will
make the prices of these non-renewable energy sources
increase dramatically. They also cause severe environmental
changes and are in a large way responsible for climate change
and global warming. Non-renewable energy sources can have
a serious impact on human health, as they are certainly not
environmental friendly.
Fig.1: Diagram of Renewable and Non-Renewable Energy
Source:http://lunar.thegamez.net/greenenergyimage/non-
conventional-energy-resources-wikipedia/non-conventional-
sources-of-energy-pdf-660x452.jpg
Thus in this paper we discuss about different types of green
energies, its advantages and applications.
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II. GREEN ENERGY
Green energy comes from natural sources such as sunlight,
wind, rain, tides, plants, algae and geothermal heat. These
energy resources are renewable, meaning they're naturally
replenished. The different types of renewable energy
technologies include: Solar energy, Marine energy, Wind
energy, Hydropower, Bio-energy, Geothermal energy etc.
Fig.2: Diagram of Green Energy
Source:http://lunar.thegamez.net/greenenergyimage/non-
conventional-energy-resources-wikipedia/non-conventional-
sources-650x409.jpg
There are various renewable energy technologies, which
include hybrid and related technologies. These are effectively
used for:
Storing energy generated through renewable
energy
For predicting renewable energy supply
Assisting in efficient delivery of energy generated
by means of renewable energy technologies to
energy consumers
II.II. CONCEPT
Our Traditional energy sources, such as fossil fuels have a
big role in creating the effect of global warming and climate
change to the earth and this makes us to create a subway to
overcome these problems by introducing the concept of
Green Energy. The primary goal of developing Green sources
of energy is to generate power and also to minimize both
waste and pollution, so that we can reduce the impact of
energy production on environment. Scientist who favoured
the use of green energy said that we can reduce the rate of
climate change by using such sources. In contrast to fossil
fuel sources these sources are renewable. The concept of
Green Energy most oftenly considered when it comes to the
issues such as cogeneration, heating and electricity. These
sources can be purchased by the consumers or businesses as
a means to support to support living which is environmental
friendly, by reducing bad impacts of energy production.
Today energy certificate or renewable energy certificate can
be purchased to support the use of green practices. It is
estimated that more than 35 million European homes and 1
million American homes are currently using Green
Certificates that symbolizes their use of Green Energy.
Ultimately, green energy is clean energy.
II.III. THE NEED OF GREEN ENERGY
Green energy is produced from renewable sources and
produces very less impact on our environment. So, in order
to protect Mother Nature from pollution and to ensure the
supply of energy continuously we should start using green
energy for industrial as well as domestic purpose.To limiting
global warming and protecting ecosystems by reducing CO2
emissions through energy efficiency and renewable Energy,
Green Energy Technology is essential.
As temperatures rise, agricultural output will fall, damage
from floods and storms will increase, (tropical) diseases will
become more prevalent and access to water will become
more of a problem for more and more people. The cost to our
environment is greater and loss is irreversible. The Earth’s
flora and fauna will suffer both directly from higher
temperatures and indirectly through the damage to their
habitats. Ecosystems will disappear. Even small temperature
increases will cause coral bleaching and threaten some
amphibians. Temperature rises of 3° or 4°C and more will
lead to major extinctions around the globe [2].
II.IV. USES OF GREEN ENERGY
There are many options of using renewable energy at
residential or commercial spaces.
Most common form of renewable energy comes from
sunlight or solar energy. One can get solar panels installed in
residential and commercial spaces where sunlight is available
in plenty.
Other places where wind is in abundance may raise wind
turbines to generate renewable energy. The energy thus
gotten can be used for pumping water and or for charging
sailboat battery.
Biomass is another very popular renewable energy source. It
is used for producing electricity and also used as a
transportation fuel. The use of biomass as a renewable form
of energy is commonly known as bio-energy.
Geothermal energy on the other hand, taps the internal heat
of the Earth for a variety of uses, including cooling and
heating of buildings and electric power production.
Marine energy is yet another very important renewable form
of energy. It comes from a variety of sources including tidal
energy and energy generated from the ocean’s waves, driven
from both tides and winds.
III. TYPES OF GREEN ENERGIES
1. SOLAR ENERGY
Sun is a huge source of solar energy which provides energy
to all the living creatures on earth. It is renewable and clean
source which produce almost about 10,000 times more
energy than earth can produce in 21
st
century. We can use
this solar energy as green energy as it is the most suitable
renewable energy source which is giving us energy directly
and indirectly such as hydro, wind, etc. and having the least
impact on the environment as it not taking part in increasing
the carbon dioxide and does not lead to global warming in
any way.
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It can be converted into useful energy directly using various
technologies grouped under two fundamental categories:
(i). Solar Photovoltaic (PV): Solar energy is directly
converted into electricity by using photovoltaic cells. This
technology is relatively new, as the solar cell was only first
successfully developed in 1975. Solar cells use light energy
from the sun to generate electricity through the photoelectric
effect. They are arranged in such away so that they can
capture as sunlight as possible.
Photovoltaic modules are the components of the PV system
which are arranged in a way so that we can use them in some
particular applications. While the majority of initial system
capital cost may be attributed to the PV array, it is the
“balance of the system” components that most affect
reliability, efficiency and safety of the overall installation.
Using Photovoltaic modules the sunlight converted into
direct current (DC). This direct current is then converted to
alternating current (AC) through an inverter and adjusted to
meet the power characteristics of the utility grid or the load.
Fig.3: Simplified schematic diagram for a grid-connected PV system
Fig.4: Use of Solar Panel
Source:http://lerablog.org/wp-content/uploads/2013/06/solar-
panels-working-scheme.jpg
(ii). Solar Thermal: Solar Thermal refers to the utilization of
the heat energy from the sun. Firstly, solar radiation can be
absorbed in solar “collectors” to provide solar space or water
heating at relatively low temperatures. In large-scale
applications, solar radiation can be concentrated by parabolic
mirrors to provide high temperatures, which may then be
used either for direct heating purposes or to generate
electricity. For example: via a conventional heat engine.
In solar thermal power plants we concentrate the solar
radiations on a small area to produce high temperature output.
The steam which is produced through this heat is then
allowed to fall on turbine- generator to produce electricity.
This system is hybridized and sometimes also used as a
storage system so to use it when sunlight is not available.
Common solar thermal power systems include:
(ii) a. Parabolic Trough Systems
In Parabolic Trough system a mirror are used which is
parabolic trough-shaped, in order to focus sunlight on a
receiver tube. This is carrying a heat transfer fluid generally
oil or water. This fluid is then heated up and pumped through
heat exchangers to produce steam. This heat is then used to
run turbine-generators to produce electricity. This Parabolic
trough technology is currently the most proven solar thermal
electric technology.
This system usually aligned on a north –
south axis, and rotated to track the Sun as it moves across the
sky each day. This system is the most developed and mature
CSP Technology. Optimal capacity size is 150 250 MW.
This is enough to power 44,000 ho mes [3].
Fig.5: Parabolic Through System
Source: https://shaikmohasin.wordpress.com/tag/trough-system/
(ii) b. Solar Tower Systems
Tower systems mainly consist of three main components:
ground heliostats, a tower, and a central receiver at the top of
the tower. The heliostats is use to capture solar radiation from
the sun and re-direct it to the central receiver. A heliostat
rotates in two dimensions, east and west, and north and south.
Each heliostat is programmed through a computer to follow
the sun and to maximize the total power output. The first
commercial solar tower system was built by Abengoa Solar
of Spain and is referred to as PS10 at the Solucar Platform in
the Spanish province of Seville. The operation was started in
March, 2007 and is still continue [4].
Fig.6: Solar Tower System
Source: http://solarcellcentral.com/csp_page.html
(ii) c. A dish/Stirling system:
The dish/Stirling system is a source of renewable energy that
generates power by using parabolically arranged mirrors to
reflect sunlight onto a small thermal receiver, thereby heating
a gas chamber connected to a piston and drive shaft. The
drive shaft powers a generator which produces electricity to
be distributed to a grid. Mainly this system consists of a
parabolic dish concentrator, a thermal receiver and a Stirling
engine located at the focus of the dish. The parabolic dish
concentrator tracks the sunlight and focuses it into a cavity
receiver where it is absorbed and transferred to a Stirling
Engine. Stirling Engines are the most popular and widely
used because they are having high thermal to mechanical
efficiencies. They also provide potential for long time and
low maintenance operations
.
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Fig.7: A dish/Stirling system
Source:
http://energy.gov/sites/prod/files/styles/large/public/csp_lab_snl_an
draka.jpg?itok=SzJqLFeB
Dish/Stirling engines are modular in design. In Dish/Stirling
engines each system is a self contained power generator.
2. HYDRO ENERGY
Hydro energy is considered renewable because the energy
from the sun powers the global hydrologic cycle. It is a power
which is derived from water cycle, a continuous process of
falling and fast running water to generate electricity.
Hydroelectric power is an established form of renewable
energy that already provides a major source of electricity,
approximately 19% of the world’s electricity [5]. The
majority of hydroelectric power harnessed in the world today
is produced from large-scale schemes.
In addition, there is further scope for development of small-
scale hydroelectric projects since:
1. Large scale schemes can produce hundreds of mega watts
and also involve construction of large dams to provide a
sufficient head to the turbine;
2. Small scale schemes have less capacity and so have small
dams and less impact on environment;
3. Micro scale schemes produces power in kilowatt and are
used in small villages and individual houses.
Fig.8: Hydropower Plant Parts
3. GEOTHERMAL ENERGY
The term ‘geo’ means ‘the earth’ and ‘thermal’ means ‘the
heat’ so geothermal means the energy which is generated in
the form of heat which generates from the radioactive decay
of materials inside the earth. It is the renewable and
sustainable source of energy. The first geothermal power
plant was built in Larderello. Magma which is produced from
the radioactive decay of uranium and potassium below the
earth crust produces lots of heat. The US National Renewable
Energy Laboratory (NREL) found out that hot dry rock
resources can provide about 4 million MW of capacity, which
is more than all the electricity today US is using. If we
compare geothermal in both the cases of size and consistency
it can play an indispensible role in a cleaner, more
sustainable power system.
(i). Geothermal Resources:
Four types of geothermal resources are hydrothermal, geo-
pressured, hot dry rock and magma. Currently, only
hydrothermal resources are in use commercially and other
technologies are still under development. There are three
basic components of hydrothermal resources: a heat source
(magma), an aquifer (container of water), and an
impermeable cap rock that seals the aquifer. To tap out the
geothermal energy, aquifers are drilled and hot water and
steam is extracted out.
Fig.9: Geothermal Resources
Source: http://oilprice.com/uploads/AB765.png
(ii). Geothermal Technology
Geothermal energy can be used in generation of electricity or
directly in space heating, water heating, greenhouse heating,
aquaculture, laundries and industrial processes.
Geothermal systems are mainly subdivided into two
production facilities-mechanical and disposal system. Firstly
the hot water and steam are delivered to the surface through
bore holes and wells, then mechanical system which includes
pipe, heat exchanger, pump and controls transport the energy
for different applications. Then a disposal system receives
and stores the cool fluid in storage ponds or injection wells.
Geothermal energy is used either as heat source or a heat sink.
In Geothermal energy there are a number of technologies
available, dry steam, flash steam, binary cycle systems, and
hot dry rock and resources used in these are at high
temperature.
(ii) a. Dry Steam Technology
The dry steam power plant is suitable where the geothermal
steam is not mixed with water. Production wells are drilled
down to the aquifer and the superheated, pressurized steam
is brought to the surface at high speeds, and passed through a
steam turbine to generate electricity.
Fig.10: Dry Stream Power Plant
Source:http://exergy.se/goran/cng/alten/proj/98/geotermal/Image9.j
pg
Then cooling towers are use to vent out the waste heat. As
the efficiency of dry steam plants are affected due to gases
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such as CO2 and H2S so it is reduced to 30% only.
Commercially available range is from 35 to 120 MW.
(ii) b. Flash Steam Technology
Single flash steam technology is used where the
hydrothermal resource is in a liquid form. The fluid is
pumped and sprayed into a flash tank, which is at a much
lower pressure than the fluid which causes the hydrothermal
fluid to vaporize into steam. Then this steam is then passed
to a turbine which is coupled to a generator to generate
electricity.
Fig.11: Flash Steam Power Plant
Source: http://holbert.faculty.asu.edu/eee463/flash.gif
Most of the geothermal fluid is not flashed so it is reinjected
into the reservoir or can be used in direct heat applications.
But if the fluid is at high temperature then it is passed to
second tank which is then flashed into steam to generate
electricity again. This will increase output power.
2.3 Binary Cycle Power Plant:
Binary cycle power plants are used where the resources are
insufficiently hot to produce steam and contain many
chemical impurities. Or we can use the fluid remaining in the
flash steam power plants in binary cycle power plant. In
binary cycle process first the fluid is passed through a heat
exchanger, then the secondary fluid such as isobutane or
pentane having lower boiling point than water is vaporized
and then passed to turbine to generate electricity. Then the
remaining fluid is reinjected into the ground.
Fig.12: Binary Cycle Power Plant
Source:http://www.way2science.com/wp-
content/uploads/2012/02/BINARY-CYCLE-PLANT.jpg
4. Wind Energy
The energy which is generated by the flow of wind using
wind turbines is called wind energy. It is a renewable source
of energy which can be use as an alternative to fossil fuels.
Wind energy is a clean energy which does not create
pollution or releasing any harmful gases i.e. greenhouse
gases. That’s why it is considered as one of the source of
green energy. Wind is actually a form of solar energy; winds
are caused by the heating of atmosphere by the sun, the
rotation of the earth and the earth’s surface irregularities.
Wind turbines are usually installed in large land farms. Wind
power capacity increases to 369.553 MW by Dec. 2014 and
rapidly growing the total wind energy production, reached
around 4% of total electricity usage
[6].
Generally all the
large wind turbines have same structure consist of a
horizontal axis wind turbine having upwind rotor with three
blades. In a wind farm, each turbine is interconnected with a
medium voltage power collection system and communication
network. Today in wind turbines we use the combination of
variable speed generators and partial or full scale power
converter between the turbine generator and the collector
system. A wind turbine is a device that converts kinetic
energy from the wind into electrical power.
The turbines which are smaller used for applications such as
traffic lights signs, charging battery, etc. While large
turbines are used for the domestic power supply and the
power which is of no use sell back to the utility supplier
through the electrical grid. Arrays of large turbines,
commonly called wind farm, are becoming an increasingly
important source of renewable energy. Many countries now
started using these resources so that they can reduce their
dependence on fossil fuels. Generally turbines are designed
so that they not only work during blowing of wind but
works at low wind speed too.
Fig.13: Wind Turbine
Source:http://ec.europa.eu/research/energy/nn/nn_rt/nn_rt_wind/im
ages/wind1_en_1371.gif
5. Vibration energy:
Vibration produced by a large crowd or by a large traffic on
the road, vibrations of tall buildings, long bridges, vehicle
systems, railroads, ocean waves can also be harvested
efficiently. The vibration energy can be converted into
electric energy and can be stored which can be used
efficiently in giving power to many low power electronic
appliances and the large vibration energy harvesting obtain 1
W to 100 kW or more [7].
When the vibration occurs about a point which is at
equilibrium then this mechanical phenomenon is known as
vibration energy. Everything present in the world vibrates at
some frequency some at low which are detectable and some
are at very high so that any human eye can’t detect them.
Vibration energy comes into focus from recent years. As we
are now in need to find out different sources of energy which
are renewable and continuous so that we can use these instead
of fossil fuels. There are mainly two kind of vibration
energy:
1. Free vibration: When a mechanical device is setup with an
initial input and then it is free to vibrate i.e. known as free
vibration. Examples for this type of vibrations is hitting a
tuning fork and letting it to vibrate. In this type the
mechanical systems vibrates one or more time than it’s
natural frequency and ends up with zero frequency.
2. Forced Vibration: When time varying disturbances are
applied to some mechanical systems such as load,
displacement or velocity then the vibrations occurs at that
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time are forced vibrations. The disturbances applied can be
periodic, steady state, a transient or a random input type. In
these the periodic disturbance can be of harmonic or non
harmonic type. Example: the shaking of washing machine
due to unbalancing.
Vibration energy can be converted to electricity by using
transducer. And there are two transducers available for this.
One is piezoelectric materials and another is electromagnetic
transducer. Transducers are the device which converts
different form of energy into electrical energy and hence in
case of vibration mechanical energy is converted to
electricity.
5.1 Piezoelectricity
Piezoelectric crystals are present in the crystalline structured
form and can produce electrical energy when mechanical
stress is applied on them.
Fig.14. Principle of direct piezoelectric effect
Electromagnetic induction:
Some springs act as power generating medium, such as
springs applied in the structures of buses and trucks to make
their moments comfortable. There is a generation of electrical
flux during the moment. When these springs move upward
and downward continuously they produce electromagnetic
induction which is tuned into electricity. These types of
springs are known as vibration amplification springs.
IV. ADVANTAGES OF GREEN ENERGY
1. SOLAR ENERGY
It is a clean source of energy which does not
produce harmful gases as a co-product so have no
effect on environment and human health.
Many everyday items such as calculator and other
low power consuming devices can be powered by
solar energy effectively.
It is a better source of energy for future generation
as it last long forever (infinite).
2. HYDRO ENERGY
It is one of the clean source of energy because
does not create any by-product during conversion.
Hydroelectric power is a domestic source of
energy, allowing each state to produce their own
energy without being reliant on international fuel
sources.
It is reliable, affordable and vast source of energy.
In addition to a sustainable fuel source,
hydropower efforts produce a no. of benefits, such
as flood control, irrigation and water supply.
Hydro electric power plant reservoirs collect rain
water, which can then be used for consumption or
for irrigation.
Hydroelectric installations bring electricity,
highways, industry and commerce to
communities, thus developing the economy,
expanding access to health and education, also
improving the quality of life.
3. WIND ENERGY
It is a clean fuel source does not pollute air. Wind
turbines do not produce atmospheric emissions
that cause acid rain or green house gases.
It is renewable source of energy require less cost.
Land around wind turbines can be used for other
users e.g. farming.
In combination with solar energy they can be used
to provide reliable as well as steady supply of
electricity.
4. GEOTHERMAL ENERGY:
It is a cheaper and affordable source of energy
used for bath, heating homes and offices,
preparing food, etc.
By using geothermal sources of energy present
generations of human will not endanger the
capability of future generation to use their old
resources to the same amount.
This is also cost effective, reliable, sustainable
and environment friendly.
Due to its low emissions geothermal energy is
considered to have excellent potential for
mitigation of global warming.
5. VIBRATION ENERGY
1. Vibration energy harvesting replaces the batteries in
medical implants which is beneficial for the environment as
these batteries contain toxic heavy metals.
2. We can use vibration energy to reduce the noise in
environment which is mainly happening in industries or due
to air craft’s etc by vibration damping and vibration isolation.
V. APPLICATIONS OF GREEN ENERGY
1. Use in calculators, road signs, satellites, etc. as solar
energy.
2. Passive space heating by solar energy.
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Fig.15: Passive space heating by solar energy
Source:http://2.bp.blogspot.com/-
alvenWVRveY/TzQMES5kvQI/AAAAAAAAAf0/2ZoSTYHcxY8
/s640/passive+solar+heating+winter+day+time.jpg
3. Warm up and keeping the food fresh by solar energy.
Fig.16: Solar Fridge
Source: http://wimages.vr-zone.net/2014/07/Anywhere-fridge.jpg
4. Water your plants with solar powered irrigation.
5. for hydrogen fuel production.
Fig.17: Hydrogen Fuel Production
Source: http://www.keepbanderabeautiful.org/hydrogen-cyclei.jpg
6. Parabolic concentrating solar cookers.
Fig.18: Solar Parabolic Cooker
Source:
http://3.bp.blogspot.com/_ZDaqJ8PhPK8/TM6In3jnq7I/AAAAAA
AAARM/ONoip1EgHVM/s1600/solar+parabolic+cooker.jpg
7. Wind and solar power vehicles.
Fig.19: Wind Solar Powered Car
Source:Assets.inhabitat.com/wp-
content/blogs.dir/1/files/2014/05/wind-solar-powered-car-by-
Segun-Oyeyiola-2-jpj
8. Wind /kite-power cargo ships.
Fig.20: Wind /kite-power cargo ships.
Source: http://www.sott.net/image/5865/Kite-ship.jpg
9. Wind powered sorts like wind surfing, kite flying, kite
surfing, hang gliding, Para sailing, wind skiing and more.
Fig.21: Wind Kites
Source:http://www.windpowersports.com/images/kites/prism/nexus
/nexus-sport-kite.jpg
10. Wind powered water pumps.
11. In farming like in fish farms in form of geothermal
energy.
Fig.22: Geothermal Energy in Farming
Source: http://3u0gdv3vukuf15vp9312siwh2cg.wpengine.netdna-
cdn.com/wp-content/uploads/2013/07/geothermal-fish-farm.jpeg
12. Use in industries to dry fruits, vegetables, wood, wool to
extract gold and silver from ore
.
Fig.23: Uses of Geothermal Energy
Source: http://3u0gdv3vukuf15vp9312siwh2cg.wpengine.netdna-
cdn.com/wp-content/uploads/2013/07/geothermal_uses_from-
Geothermal-Education-office.png
Fig.24: Geothermal Energy in Green Houses
Journal of Management Engineering and Information Technology (JMEIT)
Volume -2, Issue- 5, Oct. 2015, ISSN:
2394 - 8124
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25
Source: http://3u0gdv3vukuf15vp9312siwh2cg.wpengine.netdna-
cdn.com/wp-content/uploads/2013/07/geothermal-snow-
greenhouse-616x460.jpg
13. Use to heat sidewalks and roads in order to prevent
freezing in winters.
Fig.25: Geothermal Bike lanes
Source: http://3u0gdv3vukuf15vp9312siwh2cg.wpengine.netdna-
cdn.com/wp-content/uploads/2013/07/geothermal-bike-lanes-
heated.jpg
14. Building technologies: Some wireless sensors are made
for the structural monitoring and safety systems of the
building when there is power cut.
Fig.26:Wireless Sensors
Source: www.renesas.com/media/edge_ol/features/09/img_03.jpg
15. Medical implants: Some medical devices are deployed
inside human bodies for their well being. But these devices
needs elctricity to function properly which they get from the
vibration of patient’s own body movements such as
heartbeats.
Fig.27: Medical implants
Source:
www.azonano.com/images/article_Images/ImageForArticle_3207(1
).jpg
16. Generating Electricity from the Weight of Cars &
Pedestrians
A new technology of generating sustainable energy from
flow of vehicles is introduced by the researchers in Mexico.
“This is a technology that provides sustainable energy and
could be implemented at low prices, since it’s a complement
of already existing infrastructure: the concrete of streets and
avenues,” states Héctor Ricardo Macías Hernández, the
developer of the system [8].
Fig.28: Generating Electricity from the Weight of Cars &
Pedestrians
Source: http://cleantechnica.com/2013/12/16/generating-electricity-
weight-cars-pedestrians-system-developed-exploit-energy-passing-
cars/
Mexican entrepreneurs developed a system capable of using
the vehicular flow to generate electric energy [8].
An integrated ramp step which is made up of polymeric
material is firstly installed which rises the street level about
5 cm. As the vehicles passes a pressure is exerted due to their
weight on bellows which contains air which is expelled out
through holes. Later this is compressed to produce electricity
through a turbine.
17. Innovative tanks: Architect-designer invented some
innovative tanks that can collect solar and water both at a
time.
Fig.29: Innovative tanks
Source: http://itechfuture.com/category/green-technology/
18. Concept of translucent battery charging from sun: A
translucent lithium-ion battery that can be recharged in the
sun is developed.
Fig.30: Translucent Battery
Source: http://itechfuture.com/category/green-technology/
20. Concept of sunny paper for charging gadget: A thinnest
solar cell is introduced. It can be carried by folding in a book
etc.
Fig.31: Sunny Paper for charging gadget
Source: http://itechfuture.com/category/green-technology/
VI. FUTURE SCOPE
Green Energy is having a future in almost every field of the
world like industrial, agricultural, Medical, domestic, etc.
Scientists already have found many forms of green energy
such as solar, wind, hydro, etc. and now they are working on
some new forms of energy like radiation and biomass so to
reduce the usage of non renewable sources of energy as they
are already depleating.
In coming years efficiency of solar panels is going to increase
and it can work even in cloudy weather as researchers are
already working on it. A new combined form of solar and
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Volume -2, Issue- 5, Oct. 2015, ISSN:
2394 - 8124
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26
hydro is also coming called solar/wind hybrids. This
technology combines the wind turbines with solar
photovoltaic (PV) panels to produce higher level of energy
and the studies have found that these are nearly double
efficient then the present ones[9].
Like these there are technologies which are already invented
or just the concepts are given and are still developing. These
inventions let us to make an environment which is using
green energy completely and is eco-friendly.
VII. CONCLUSION
Through this paper we are trying to focus on need for energy
which is eco- friendly and can be renewed which requires
technological development to obtain the best utilization of
green energy. As the resources obtained naturally has the
potential to protect world and reduce dependence on non-
renewable resources which are near to extinction.
Seeking from the future aspect green energy is an alternative
source for power generation, provide energy in unlimited
ways. The only need is to aware people for energy
conservation along with environment. This is a step to
generate different forms of energy in most of the field with
clean source (less use of fossil fuel). Day by day the demand
of clean energy is increasing; green energy will fulfill the
need with more advance technological systems. But it will
take some time when every single house operate their
electrical appliances by using their own power producing
system such as solar panels, small wind turbines etc.
VIII. REFERENCES
[1.] https://en.wikipedia.org/wiki/Green_Energy_Act_2009
[2.]http://tec.gov.in/pdf/Studypaper/GET%20for%20Telecom%20A
pplications.pdf
[3.] Source: https://shaikmohasin.wordpress.com/tag/trough-
system/
[4.] http://solarcellcentral.com/csp_page.html#tower_systems
[5.] Agreement No. : CE 36/2000, Study on the Potential
Applications of Renewable Energy in Hong Kong, Stage 1 Study
Report, December 2002
[6.] https://en.wikipedia.org/wiki/Wind_power
[7.] Vijay Laxmi Kalyani, Anjali Piaus, Preksha Vyas, “Harvesting
Electrical Energy via Vibration”, Journal of Management
Engineering and Information Technology, Volume -2, Issue- 4, Aug.
2015, ISSN: 2394 – 8124
[8.]http://cleantechnica.com/2013/12/16/generating-electricity-
weight-cars-pedestrians-system-developed-exploit-energy-passing-
cars/
[9.]http://www.justenergy.com/blog/the-future-of-renewable-
energy/
Author’s Details
Vijay Laxmi Kalyani Assistant Professor in ECE
department, Govt. Mahila Engineering College, Ajmer.
IAENG membership. Attended various seminars and
conferences and also published many papers in conferences
and journals
Manisha Kumari Dudy is pursuing B.tech (V-sem) in
Electronics and Communication Engineering in GWEC,
Ajmer.
Shikha Pareek is pursuing B.tech (V- sem) in Electronics
and Communication Engineering in GWEC, Ajmer.
... Incessant and massive use of conventional energy reserves is endangering ecological, socio-economic situation and also impending world's sustainability (Twas, 2008). Therefore, world is shifting to environment-friendly green energy (Kalyani, et al., 2015). The pursuit of alternate energy sources has now become crucial for nations. ...
... Now a days, green energy multipurpose technologies are successfully being used in domestic as well as commercial sectors (Almasri and Narayan, 2021). The green energy concept had been envisaged in November 2006 as part of a mission to make renewable energy commonplace (Kalyani, et al., 2015). Therefore, section (1) of this research paper portray the brief introduction of energy, its pivotal role and significance in global economy. ...
... Green Energy refers to energy generated with minimal harm, completely renewable in its character. Prominent green sources include solar, hydropower, geothermal and wind are AER having negligible or no global warming impact (Kalyani, et al., 2015). Notably, extensive renewable energy utilisation would slow down the rate of climate change amidst providing suitable and cheaper solutions of energy problems (DolfGielen, 2019). ...
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In present days electronic equipments are charged by Solar Cells, Batteries etc., but the power consumed is very large in such devices and moreover they have a limited life span. So there is a need of renewable sources of energy. Many conventional sources of energy are being developed which are both efficient as well as eco-friendly. Nowadays, harvesting energy from vibration is one of the most promising technologies. Human body produces 5 volts of energy; these vibrations produced in the human body during various activities can be harvested. Similarly vibration produced by a large crowd or by a large traffic on the road, vibrations of tall buildings, long bridges, vehicle systems, railroads, ocean waves can also be harvested efficiently. The vibration energy can be converted into electric energy and can be stored which can be used efficiently in giving power to many low power electronic appliances and the large vibration energy harvesting obtain 1 W to 100 kW or more. So in this paper we are trying to focus on some methods which will convert the vibration energy to electric energy. We will try to discuss various types of power harvesting techniques which will ultimately give us electrical energy that can be used as a source of power for many electronic appliances. In this paper we also discuss the relevant applications include vibration energy harvesting from human motion, road vehicles, transportations, and civil structures.
Passive space heating by solar energy Source
  • Fig
Fig.15: Passive space heating by solar energy Source:http://2.bp.blogspot.com/- alvenWVRveY/TzQMES5kvQI/AAAAAAAAAf0/2ZoSTYHcxY8 /s640/passive+solar+heating+winter+day+time.jpg
Anjali Piaus, Preksha Vyas Harvesting Electrical Energy via Vibration
] https://en.wikipedia.org/wiki/Wind_power [7.] Vijay Laxmi Kalyani, Anjali Piaus, Preksha Vyas, " Harvesting Electrical Energy via Vibration ", Journal of Management Engineering and Information Technology, Volume -2, Issue-4, Aug. 2015, ISSN: 2394 – 8124
Harvesting Electrical Energy via Vibration
  • Anjali Vijay Laxmi Kalyani
  • Preksha Piaus
  • Vyas
Vijay Laxmi Kalyani, Anjali Piaus, Preksha Vyas, "Harvesting Electrical Energy via Vibration", Journal of Management Engineering and Information Technology, Volume -2, Issue-4, Aug. 2015, ISSN: 2394 -8124